Interpretation of the seabed geologic substrates in quadrangle 2 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts based on data collected by the U.S. Geological Survey from 1993-2019

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Identification_Information:

Citation:

Citation_Information:

Originator: Page C. Valentine
Publication_Date: 20241216
Title:

Interpretation of the seabed geologic substrates in quadrangle 2 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts based on data collected by the U.S. Geological Survey from 1993-2019

Edition: 1.0
Geospatial_Data_Presentation_Form: Vector Digital Dataset (Polygon)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9UL3LWN

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher:

U.S. Geological Survey, Coastal and Marine Hazards and Resources Program

Online_Linkage: https://doi.org/10.5066/P9UL3LWN
Online_Linkage:

https://www.sciencebase.gov/catalog/item/644a7995d34ee8d4adee0435

Larger_Work_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2024
Title:

Geospatial datasets of seabed topography, sediment mobility, and the distribution of geologic substrates in quadrangle 2 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts

Edition: 1.0
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9UL3LWN

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C., and Cross, V.A., 2024, Geospatial datasets of seabed topography, sediment mobility, and the distribution of geologic substrates in quadrangle 2 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts: U.S. Geological Survey data release, https://doi.org/10.5066/P9UL3LWN.

Online_Linkage: https://doi.org/10.5066/P9UL3LWN
Online_Linkage:

https://www.sciencebase.gov/catalog/item/64496f7ed34ee8d4aded9330

Description:

Abstract:

The U.S. Geological Survey (USGS), in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration (NOAA), has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The interpretive datasets and source information presented here are for quadrangle 2, which is one of 18 similarly-sized quadrangles that comprise the 3,700 square kilometer (km2) SBNMS region. The seabed of the SBNMS region is a glaciated terrain that is topographically and texturally diverse. Mapping of quadrangle 2 shows the distribution of substrates across the southwestern part of Stellwagen Bank, in Stellwagen Basin to the west and southwest of the bank, in Little Stellwagen Basin, and in the western part of Race Point Channel to the south of the bank. Water depths range from ~19 m on the bank crest to ~64 m in Stellwagen Basin. The previously unpublished data provided in this data release in conjunction with previously published bathymetric and seabed backscatter imagery, photographs, video, and grain-size analyses for quadrangle 2 are the foundation for Scientific Investigations Map 3530 (Valentine and Cross, 2024), which presents maps of seabed topography, ruggedness, backscatter intensity, distribution of geologic substrates, sediment mobility, distribution of fine- and coarse-grained sand, and substrate mud content. For the quadrangle 2 interpretations, data from 733 ground validation stations were analyzed, including 656 sediment samples. The seabed geology of quadrangle 2 comprises 19 substrate types ranging from boulder ridges to mobile and rippled sand to mud. Not all of these substrates are mappable as individual polygons. Substrate types are defined or inferred by sediment grain-size composition, surface morphology, sediment layering, the mobility or immobility of substrate surfaces, and water depth range. Scientific Investigations Map 3530 portrays the major geological elements (substrates, topographic features, processes) of environments within quadrangle 2. It is intended to be a basis for the study of sediment transport processes that affect a shallow, offshore bank and adjacent basins, for the study of the ecological requirements of invertebrate and vertebrate species that use these substrates, and to support seabed management in the region.

Purpose:

This dataset provides comprehensive seabed interpretations of the seafloor within quadrangle 2 of the Stellwagen Bank National Marine Sanctuary region. This interpretation includes the geologic substrates, sediment mobility, substrate coarseness, and substrate mud content. The geologic substrates are the primary interpretations, and the remaining three are derivatives of that.

Supplemental_Information:

This interpretation is based on multibeam sonar bathymetry, multibeam backscatter imagery, video, photos, and grain-size analyses of samples collected from the seabed in the time period 1993-2019. Over 50 scientific cruises have been conducted in an effort to map Stellwagen Bank. For this interpretation of quadrangle 2 on Stellwagen Bank, ground-truth stations on the following 32 USGS WHCMSC field activities have played a vital role: 1993-006-FA, 1993-023-FA, 1993-030-FA, 1994-004-FA, 1994-014-FA, 1995-012-FA, 1995-015-FA, 1995-036-FA, 1996-025-FA, 1996-037-FA, 1996-038-FA, 2013-044-FA, 2014-015-FA, 2014-055-FA, 2014-066-FA, 2014-070-FA, 2015-017-FA, 2015-062-FA, 2015-074-FA, 2016-004-FA, 2016-012-FA, 2016-038-FA, 2016-039-FA, 2017-009-FA, 2017-030-FA, 2017-043-FA, 2017-044-FA, 2018-027-FA, 2018-028-FA, 2018-028-FA, 2018-029-FA, 2019-007-FA, and 2019-008-FA. More information on each of these activities can be found by replacing the XXXX in the following URL with the cruise ID: https://cmgds.marine.usgs.gov/fan_info.php?fan=XXXX. For example: https://cmgds.marine.usgs.gov/fan_info.php?fan=1993-023-FA. These data have a companion report that provides the additional details and information related to the interpretation and methods. Additionally, the report contains PDF maps of the seabed interpretation. That companion report is Valentine, P.C., and Cross, V.A., 2024, Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in quadrangle 2 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts: U.S. Geological Survey Scientific Investigations Map, 3530, 8 sheets, scale 1:25,000, https://doi.org/10.3133/sim3530 .

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1993
Ending_Date: 2019

Currentness_Reference:

ground condition of original data upon which the interpretation is based

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -70.411110
East_Bounding_Coordinate: -70.222221
North_Bounding_Coordinate: 42.202778
South_Bounding_Coordinate: 42.083328

Keywords:

Theme:

Theme_Keyword_Thesaurus: none
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: National Oceanic and Atmospheric Administration
Theme_Keyword: NOAA
Theme_Keyword: Esri shapefile
Theme_Keyword: interpretation
Theme_Keyword: seabed geology
Theme_Keyword: substrate distribution
Theme_Keyword: polygon
Theme_Keyword: quadrangle 2
Theme_Keyword: geology
Theme_Keyword: geologic substrates
Theme_Keyword: sediment mobility
Theme_Keyword: substrate
Theme_Keyword: substrate mobility
Theme_Keyword: substrate grain size
Theme_Keyword: substrate mud content

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: geoscientificInformation
Theme_Keyword: environment

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: marine geology
Theme_Keyword: sea-floor characteristics
Theme_Keyword: geospatial datasets
Theme_Keyword: scientific interpretation

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:644a7995d34ee8d4adee0435

Place:

Place_Keyword_Thesaurus: none
Place_Keyword: Massachusetts
Place_Keyword: Boston, Massachusetts
Place_Keyword: Massachusetts Bay
Place_Keyword: Stellwagen Bank
Place_Keyword: Stellwagen Bank National Marine Sanctuary
Place_Keyword: Stellwagen Basin
Place_Keyword: U.S. east coast
Place_Keyword: United States
Place_Keyword: North America
Place_Keyword: Atlantic Ocean

Access_Constraints: None.
Use_Constraints:

The interpretation was completed at a map scale of 1:25,000 and may not be appropriate for use at other scales.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Page C. Valentine

Contact_Position: Research Geologist
Contact_Address:

Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543

Contact_Voice_Telephone: 508-548-8700 x2239
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov
Contact_Instructions:

The metadata contact email address is a generic address in the event the person is no longer with the USGS.

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.sciencebase.gov/catalog/file/get/644a7995d34ee8d4adee0435?name=q2_substrate_interp_browse.png&allowOpen=true

Browse_Graphic_File_Description:

Thumbnail image showing the interpreted bottom substrates within quadrangle 2 of the Stellwagen Bank National Marine Sanctuary. The image indicates the four different representations of the seabed interpretation including the geologic substrates, the sediment mobility, substrate coarseness, and substrate mud content.

Browse_Graphic_File_Type: PNG

Data_Set_Credit:

Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the source of this information.

Native_Data_Set_Environment:

Environment as of Metadata Creation: Microsoft Windows 10; ArcMap 10.8.1

Cross_Reference:

Citation_Information:

Originator: Page C. Valentine
Originator: Leslie B. Gallea
Publication_Date: 2015
Title:

Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in quadrangle 6 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts

Geospatial_Data_Presentation_Form: raster digital data, vector digital data
Series_Information:

Series_Name: Scientific Investigations Map
Issue_Identification: 3341

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

This publication contains the equivalent information as this data release, but for quadrangle 6.

Online_Linkage: https://doi.org/10.3133/sim3341
Online_Linkage: http://pubs.usgs.gov/sim/3341/

Cross_Reference:

Citation_Information:

Originator: Page C. Valentine
Publication_Date: 2019
Title:

Sediment classification and the characterization, identification, and mapping of geologic substrates for the glaciated Gulf of Maine seabed and other terrains, providing a physical framework for ecological research and seabed management

Series_Information:

Series_Name: Scientific Investigations Report
Issue_Identification: 2019-5073

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

This document describes the methodology developed to map the glaciated terrain characterized by geologic substrates that typify a wide range of erosional and depositional sediment environments. This methodology is what was used in this dataset.

Online_Linkage: https://doi.org/10.3133/sir20195073
Online_Linkage: https://pubs.er.usgs.gov/publication/sir20195073

Cross_Reference:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2024
Title:

Geospatial datasets of seabed topography, sediment mobility, and the distribution of geologic substrates in quadrangle 5 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts

Geospatial_Data_Presentation_Form: raster digital data, vector digital data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9W9BN3S

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

This data release contains the equivalent geospatial datasets as this data release, but for quadrangle 5.

Online_Linkage: https://doi.org/10.5066/P9W9BN3S
Online_Linkage:

https://www.sciencebase.gov/catalog/item/6399d59dd34e0de3a1f0dd6b

Cross_Reference:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2024
Title:

Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in quadrangle 5 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts

Series_Information:

Series_Name: Scientific Investigations Map
Issue_Identification: 3515

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

This report is the companion publication of the data release for quadrangle 5 that provides the additional details and information related to the interpretation and methods. Additionally, the report contains PDF maps of the seabed interpretation. The report also provides additional references related to the work in Stellwagen Bank National Marine Sanctuary.

Online_Linkage: https://doi.org/10.3133/sim3515

Cross_Reference:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2024
Title:

Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in quadrangle 2 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts

Series_Information:

Series_Name: Scientific Investigations Map
Issue_Identification: 3530

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

This report is the companion publication of this data release that provides the additional details and information related to the interpretation and methods. Additionally, the report contains PDF maps of the seabed interpretation. The report also provides additional references related to the work in Stellwagen Bank National Marine Sanctuary.

Online_Linkage: https://doi.org/10.3133/sim3530

Data_Quality_Information:

Logical_Consistency_Report:

The interpretation was carried out by a single person and is consistent throughout the study area, quadrangle 2 of the SBNMS region. There should not be slivers between interpreted polygons, nor should the polygons have overlap. The units are represented by alpha characters. A missing alpha character in the sequence indicates that a unit interpreted elsewhere is not present in this quadrangle. In comparison of other quadrangles that have been interpreted, the primary description of a unit is consistent, but the details of the unit might vary due to specifics in an individual quadrangle. For example, substrate A1 will be a rippled, coarse-grained sand in 2 different quads, but the percentages of mud, sand, or other components can differ slightly in each quad due to some variation in the samples’ mean grain-size distribution. One unit (substrate AC) lies principally in quadrangle 3 to the east of quadrangle 2. It extends a small distance into quadrangle 2. The single grain-size analysis from this substrate is from a sample collected in quadrangle 3 but based on other mapping guidance (bathymetry, sun-illuminated topography) the unit is extended into this quadrangle (quadrangle 2). No samples were collected from this substrate in quadrangle 2 and the interpretation was extrapolated to quadrangle 2 based on other information.

Completeness_Report:

This interpretation reflects a near complete coverage of the study area, quadrangle 2 of the SBNMS region. A small area in the southeast corner of the quadrangle was not covered by the bathymetry and backscatter data acquisition, so is excluded from the interpretation. The data used in compiling maps and the interpretation were collected on scientific cruises conducted by the USGS and sometimes collaborators from NOAA’s Stellwagen Bank National Marine Sanctuary from 1993 to 2019. Many of the project sites were sampled repetitively over this time period and not all data collected was required to compile the maps. The last cruise that provided sediment texture and video data was conducted in July, 2019 (2019-008-FA).

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Navigation for all data upon which the interpretation was based used either differential GPS or GPS. These systems are assumed to have an accuracy better than 10 meters. Some of the data (bottom photos, video, and sediment samples) used in the interpretation relied on a system deployed by the ship while the ship drifted. Drift of this system relative to the ship navigation antenna was not accounted for. Additional inaccuracies are associated with how the interpretation was drawn in a freehand method. Based on this information, the interpretation is assumed to be accurate to within approximately 40 meters.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: Leslie B. Gallea
Originator: Dann S. Blackwood
Originator: Erin R. Twomey
Publication_Date: 2010
Title:

Seabed photographs, sediment texture analyses, and sun-illuminated sea floor topography in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts

Geospatial_Data_Presentation_Form: raster digital data, vector digital data
Series_Information:

Series_Name: Data Series
Issue_Identification: 469

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.3133/ds469
Online_Linkage: http://pubs.usgs.gov/ds/469/

Type_of_Source_Media: Digital online
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1994
Ending_Date: 2004

Source_Currentness_Reference: ground condition of the originally collected data

Source_Citation_Abbreviation: DS469
Source_Contribution:

Original photographic imagery and sediment grain size analyses were used to interpret the seabed geology of the study area.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine, editor
Publication_Date: 2005
Title:

Sea floor image maps showing topography, sun-illuminated topography, backscatter intensity, ruggedness, slope, and the distribution of boulder ridges and bedrock outcrops in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts

Geospatial_Data_Presentation_Form: raster digital data
Series_Information:

Series_Name: Scientific Investigations Map
Issue_Identification: 2840

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.3133/sim2840
Online_Linkage: http://pubs.usgs.gov/sim/2005/2840/

Type_of_Source_Media: DVD-ROM and online
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1994
Ending_Date: 1996

Source_Currentness_Reference: Ground condition of originally collected data.

Source_Citation_Abbreviation: SIM2840
Source_Contribution:

This publication contains the sun-illuminated topography raster data, seabed ruggedness raster data, and the combined backscatter intensity/sun-illuminated topography raster data that were used to aid the interpretation of the seabed geology of the study area.

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: Unpublished Material
Title: Bottom Video

Type_of_Source_Media: Hi-8 video tape and digital video (for years 1993 to 2019)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1993
Ending_Date: 2019

Source_Currentness_Reference: Ground condition of the originally collected data.

Source_Citation_Abbreviation: video
Source_Contribution:

Original video imagery of the seabed was used to interpret the seabed geology of the study area. Although the video has not been released due to size constraints, the tracklines of video acquisition are available from numerous releases. Those used in Quadrangle 2 are listed as additional source contributions.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2019
Title:

Sea-floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in November, 2013, U.S. Geological Survey Field Activity 2013-044-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9N8YJL1

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C., and Cross, V.A., 2019, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in November, 2013, U.S. Geological Survey Field Activity 2013-044-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9N8YJL1.

Online_Linkage: https://doi.org/10.5066/P9N8YJL1

Type_of_Source_Media: digital file (polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20131105
Ending_Date: 20131121

Source_Currentness_Reference:

ground condition when data were collected. There were three days of data collection. November 5, 15, and 21, 2013.

Source_Citation_Abbreviation: 2013-044-FA video lines
Source_Contribution:

This dataset is the location of the video transects from field activity 2013-044-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2020
Title:

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in May, 2014, U.S. Geological Survey Field Activity 2014-015-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P93OZR8C

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C., and Cross, V.A., 2020, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in May, 2014, U.S. Geological Survey Field Activity 2014-015-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P93OZR8C.

Online_Linkage: https://doi.org/10.5066/P93OZR8C

Type_of_Source_Media: digital file (polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20140522
Ending_Date: 20140530

Source_Currentness_Reference:

ground condition when data were collected. The days of data collection were May 22-23 and 29-30, 2014.

Source_Citation_Abbreviation: 2014-015-FA video lines
Source_Contribution:

This dataset is the location of the video transects from field activity 2014-015-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2020
Title:

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in September, 2014, U.S. Geological Survey Field Activity 2014-055-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9NK9AJP

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C., and Cross, V.A., 2020, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in September, 2014, U.S. Geological Survey Field Activity 2014-055-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9NK9AJP.

Online_Linkage: https://doi.org/10.5066/P9NK9AJP

Type_of_Source_Media: digital file (polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20140923
Ending_Date: 20140924

Source_Currentness_Reference:

ground condition when data were collected. There were two days of data collection based on EDT. September 23 and 24, 2014.

Source_Citation_Abbreviation: 2014-055-FA video lines
Source_Contribution:

This dataset is the location of the video transects from field activity 2014-055-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2020
Title:

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in November, 2014, U.S. Geological Survey Field Activity 2014-066-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9EQM8MK

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C., and Cross, V.A., 2020, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in November, 2014, U.S. Geological Survey Field Activity 2014-066-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9EQM8MK.

Online_Linkage: https://doi.org/10.5066/P9EQM8MK

Type_of_Source_Media: digital file (polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20141110

Source_Currentness_Reference: ground condition of when data were collected.

Source_Citation_Abbreviation: 2014-066-FA video lines
Source_Contribution:

This dataset is the location of the video transects from field activity 2014-066-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2020
Title:

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in December, 2014, U.S. Geological Survey Field Activity 2014-070-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9HVBS0Q

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Valentine, P.C., and Cross, V.A., 2020, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in December, 2014, U.S. Geological Survey Field Activity 2014-070-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9HVBS0Q.

Online_Linkage: https://doi.org/10.5066/P9HVBS0Q

Type_of_Source_Media: digital file (polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20141212

Source_Currentness_Reference: ground condition of when data were collected.

Source_Citation_Abbreviation: 2014-070-FA video lines
Source_Contribution:

This dataset is the location of the video transects from field activity 2014-070-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2020
Title:

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in May and June, 2015, U.S. Geological Survey Field Activity 2015-017-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9BG490P

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C., and Cross, V.A., 2020, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in May and June, 2015, U.S. Geological Survey Field Activity 2015-017-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9BG490P .

Online_Linkage: https://doi.org/10.5066/P9BG490P

Type_of_Source_Media: digital file (polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20150518
Ending_Date: 20150603

Source_Currentness_Reference:

ground condition when data were collected. The UTC dates of data collection were May 18-19, 29, and June 3, 2015.

Source_Citation_Abbreviation: 2015-017-FA video lines
Source_Contribution:

This dataset is the location of the video transects from field activity 2015-017-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2017
Title:

Sea floor sediment samples, seabed imagery, and CTD data collected in Stellwagen Bank National Marine Sanctuary, MA in 2015, U.S. Geological Survey Field Activity 2015-062-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/F7N015FS

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C. and Cross, V.A., 2017, Sea floor sediment samples, seabed imagery, and CTD data collected in Stellwagen Bank National Marine Sanctuary, MA in 2015, U.S. Geological Survey Field Activity 2015-062-FA: U.S. Geological Survey data release, https://doi.org/10.5066/F7N015FS .

Online_Linkage: https://doi.org/10.5066/F7N015FS

Type_of_Source_Media: digital file (point shapefile and polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20151021
Ending_Date: 20151104

Source_Currentness_Reference:

ground condition of when data were collected. There were four days of data collection. October 21-22 and November 3-4, 2015.

Source_Citation_Abbreviation: 2015-062-FA data
Source_Contribution:

This dataset contains the location of the video transects from field activity 2015-062-FA (those that fall within quadrangle 2) that were used in the interpretation. Additionally, the publication has sediment sample information used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2015
Title:

Station information, seabed imagery, and CTD instrument data collected on Stellwagen Bank in December 2015, U.S. Geological Survey Field Activity 2015-074-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9XPFQ63

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Valentine, P.C., and Cross, V.A., 2021, Station information, seabed imagery, and CTD instrument data collected on Stellwagen Bank in December 2015, U.S. Geological Survey Field Activity 2015-074-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9XPFQ63 .

Online_Linkage: https://doi.org/10.5066/P9XPFQ63

Type_of_Source_Media: digital file (point shapefile and polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20151201

Source_Currentness_Reference: ground condition of when data were collected.

Source_Citation_Abbreviation: 2015-074-FA data
Source_Contribution:

This dataset contains the location of the video transects from field activity 2015-074-FA (those that fall within quadrangle 2) that were used in the interpretation. Additionally, the publication has sediment sample information used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2016
Title:

Station information, seabed imagery, and CTD instrument data collected on Stellwagen Bank in January 2016, U.S. Geological Survey Field Activity 2016-004-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P934L7PN

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Valentine, P.C., and Cross, V.A., 2021, Station information, seabed imagery, and CTD instrument data collected on Stellwagen Bank in January 2016, U.S. Geological Survey Field Activity 2016-004-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P934L7PN .

Online_Linkage: https://doi.org/10.5066/P934L7PN

Type_of_Source_Media: digital file (point shapefile and polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20160128

Source_Currentness_Reference: ground condition of when data were collected.

Source_Citation_Abbreviation: 2016-004-FA data
Source_Contribution:

This dataset contains the location of the video transects from field activity 2016-004-FA (those that fall within quadrangle 2) that were used in the interpretation. Additionally, the publication has sediment sample information used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2020
Title:

Station Information, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank in September, 2016, U.S. Geological Survey Field Activity 2016-038-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P91MNNSN

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C. and Cross, V.A., 2017, Station information, seabed and sample imagery, and CTD instrument data collected on Stellwagen Bank in September, 2016, U.S. Geological Survey Field Activity 2016-038-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P91MNNSN .

Online_Linkage: https://doi.org/10.5066/P91MNNSN

Type_of_Source_Media: digital file (point shapefile, polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160916
Ending_Date: 20160919

Source_Currentness_Reference:

ground condition of when data were collected. There were two days of data collection. September 16 and 19, 2016.

Source_Citation_Abbreviation: 2016-038-FA video lines
Source_Contribution:

This dataset contains the location of the video transects from field activity 2016-038-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2019
Title:

Sea Floor Sediment Samples, Seabed Imagery, and CTD Water Column Data Collected on Stellwagen Bank in January 2017, U.S. Geological Survey Field Activity 2017-009-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9THIZBB

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Valentine, P.C., and Cross, V.A., 2019, Sea floor sediment samples, seabed imagery, and CTD water column data collected on Stellwagen Bank in January 2017, U.S. Geological Survey Field Activity 2017-009-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9THIZBB .

Online_Linkage: https://doi.org/10.5066/P9THIZBB

Type_of_Source_Media: digital file (point shapefile, polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20170130

Source_Currentness_Reference: ground condition of when data were collected.

Source_Citation_Abbreviation: 2017-009-FA data
Source_Contribution:

This dataset contains the location of the video transects from field activity 2017-009-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2019
Title:

Sea-floor sediment samples, seabed imagery, and CTD data collected on Stellwagen Bank, in May 2017, U.S. Geological Survey Field Activity 2017-030-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P94GOZ7C

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Valentine, P.C., and Cross, V.A., 2019, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in May 2017, U.S. Geological Survey Field Activity 2017-030-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P94GOZ7C .

Online_Linkage: https://doi.org/10.5066/P94GOZ7C

Type_of_Source_Media: digital file (point shapefile, polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20170518
Ending_Date: 20170523

Source_Currentness_Reference:

ground condition when data were collected. Actual dates of collection May 18, 19, and 23, 2017

Source_Citation_Abbreviation: 2017-030-FA data
Source_Contribution:

This dataset contains the location of the video transects from field activity 2017-030-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2018
Title:

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in August 2017, U.S. Geological Survey Field Activity 2017-043-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9A57QWI

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Valentine, P.C., and Cross, V.A., 2018, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in August 2017, U.S. Geological Survey Field Activity 2017-043-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9A57QWI .

Online_Linkage: https://doi.org/10.5066/P9A57QWI

Type_of_Source_Media: digital file (point shapefile, polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20170822
Ending_Date: 20170823

Source_Currentness_Reference: ground condition when data were collected.

Source_Citation_Abbreviation: 2017-043-FA data
Source_Contribution:

This dataset contains the location of the video transects from field activity 2017-043-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2019
Title:

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in September 2017, U.S. Geological Survey Field Activity 2017-044-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9IL0LLO

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Valentine, P.C., and Cross, V.A., 2019, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in September 2017, U.S. Geological Survey Field Activity 2017-044-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9IL0LLO .

Online_Linkage: https://doi.org/10.5066/P9IL0LLO

Type_of_Source_Media: digital file (point shapefile, polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20170912
Ending_Date: 20170914

Source_Currentness_Reference: ground condition when data were collected.

Source_Citation_Abbreviation: 2017-044-FA data
Source_Contribution:

This dataset contains the location of the video transects from field activity 2017-044-FA (those that fall within quadrangle 2) that were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2020
Title:

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in July and August, 2019, U.S. Geological Survey Field Activity 2019-008-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P93ATKSC

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C., and Cross, V.A., 2020, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in July and August, 2019, U.S. Geological Survey Field Activity 2019-008-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P93ATKSC .

Online_Linkage: https://doi.org/10.5066/P93ATKSC

Type_of_Source_Media: digital file (point shapefile, vector data)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20190730
Ending_Date: 20190801

Source_Currentness_Reference:

ground condition of when data were collected. There were three days of data collection, July 30, 31, and August 1, 2019.

Source_Citation_Abbreviation: 2019-008-FA data
Source_Contribution:

This dataset contains the location of the video transects from field activity 2019-008-FA (those that fall within quadrangle 2) that were used in the interpretation, as well as the sediment samples.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2019
Title:

Location and analyses of sediment samples collected on Stellwagen Bank off Boston, Massachusetts from November 5, 2013 to April 30, 2019 during U.S. Geological Survey field activities

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9FWFLPD

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Valentine, P.C., and Cross, V.A., 2019, Location and analyses of sediment samples collected on Stellwagen Bank off Boston, Massachusetts from November 5, 2013 to April 30, 2019 on U.S. Geological Survey field activities: U.S. Geological Survey data release, https://doi.org/10.5066/P9FWFLPD .

Online_Linkage: https://doi.org/10.5066/P9FWFLPD

Type_of_Source_Media: digital file (polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20131105
Ending_Date: 20190430

Source_Currentness_Reference:

ground condition of when data were collected. Sediment data were collected on 20 cruises from November 5, 2013 to April 30, 2019.

Source_Citation_Abbreviation: 2013-2019 sediment samples
Source_Contribution:

This dataset contains the location and analyses of sediment samples collected on field activities from 2103 to 2019. The samples that fall within quadrangle 2 were used in the interpretation.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Page C. Valentine
Originator: VeeAnn A. Cross
Publication_Date: 2022
Title:

Station Information, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank from May 2016 to April 2019

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data (polylines and points)
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9ERNGJ2

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Valentine, P.C., and Cross, V.A., 2022, Station information, seabed and sample imagery, and CTD instrument data collected on Stellwagen Bank from May 2016 to April 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9ERNGJ2 .

Online_Linkage: https://doi.org/10.5066/P9ERNGJ2

Type_of_Source_Media: digital file (polyline shapefile)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160518
Ending_Date: 20190430

Source_Currentness_Reference:

Ground condition of when data were collected. These data were collected during six separate surveys, with the following ranges of dates for each survey: field activity 2016-012-FA: 20160518 to 20160520; field activity 2016-039-FA: 20161027; field activity 2018-027-FA: 20180521 to 20180523; field activity 2018-028-FA: 20180718 to 20180720; field activity 2018-029-FA: 20181109 and 20181130; and field activity 2019-007-FA: 20190425 to 20190430.

Source_Citation_Abbreviation: 2016-2019 station data
Source_Contribution:

This dataset contains the location of the video transects from several field activities from 2016 to 2019 (those that fall within quadrangle 2) that were used in the interpretation, as well as the sediment samples.

Process_Step:

Process_Description:

Methodology description of the interpretation with more details available from Valentine, 2019 (available from the cross-references).
A geologic substrate is a surface or volume of sediment or rock where physical, chemical, and biological processes occur, such as the movement and deposition of sediment, the formation of bedforms, and the attachment, burrowing, feeding, reproduction, and sheltering of organisms. Data sources used to characterize substrates are multibeam sonar bathymetric and backscatter imagery to document seabed topography and patterns of sediment and rock distribution, grain-size analyses of sediment samples to determine substrate composition, and video and photographic imagery of the seabed to aid in the interpretation of multibeam sonar imagery and to provide information on substrate layering and mobility, seabed structures, and sediments and non-sediment materials that cannot be physically sampled. Substrates are characterized and identified by sediment grain-size composition; the distribution, in millimeters, of grain diameters in the sediment; the presence of non-sediments (for example, rock outcrops); substrate mobility based on the presence of sediment ripples; substrate layering (for example, a partial veneer of sand on gravel); and seabed structures. This methodology was applied to the interpretation of the seabed in this data release. The interpretation itself was an iterative process that took place over a number of years, 2018-2023, primarily 2022.

Process_Date: 2023
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Page C. Valentine

Contact_Position: Research Geologist
Contact_Address:

Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA

Contact_Voice_Telephone: (508) 548-8700 x2239
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: pvalentine@usgs.gov

Process_Step:

Process_Description:

Manual process: The locations of stations were digitally plotted on a multibeam sonar image of sun-illuminated seabed topography in ArcMap 10.3.1 and then exported to PDF at a scale of 1:25000. The boundaries of geologic substrates were digitally drawn by hand on the PDF map in Adobe Acrobat Pro based on interpretation of the data described here. The transfer of this information to the GIS is described in the next process step.

The following information was used as guidelines to derive individual substrate units.

Individual sediment samples were aggregated into substrate types by comparing their textural composition, with special emphasis placed on:

(1) mud, sand, and gravel weight percents;
(2) sand fraction subdivided into a fine-grained sand composite, fgS (3 and 4 phi), and a coarse-grained sand composite, cgS (0, 1, and 2 phi), in weight percents;
(3) fine-grained sand fraction subdivided into 3 phi sand and 4 phi sand, in weight percents;
(4) weight percent of phi grain sizes;
(5) significant phi grain sizes (greater than or equal to 10 weight percent of the sample);
(6) gravel fraction (granules and pebbles only) subdivided into G1 (–1, and –2 phi), and G2 (–3, –4, and –5 phi), in weight percents;

Gravel pebbles larger than -5 phi (6.4 cm) were not collected in this study, although larger pebbles, cobbles, and boulders were observed in seabed imagery.

Mobility of sediments was determined by the presence or absence of sand ripples, as viewed in video and photographic imagery.

Substrate layering was determined by the presence of a layer of finer sediment overlying (but not completely covering) coarser sediment, as viewed in video and photographic imagery.

This process was an iterative process that took place over a number of years, 2018-2023, primarily 2022.

Source_Used_Citation_Abbreviation: DS469
Source_Used_Citation_Abbreviation: SIM2840
Source_Used_Citation_Abbreviation: video
Source_Used_Citation_Abbreviation: 2013-044-FA video lines
Source_Used_Citation_Abbreviation: 2014-015-FA video lines
Source_Used_Citation_Abbreviation: 2014-055-FA video lines
Source_Used_Citation_Abbreviation: 2014-066-FA video lines
Source_Used_Citation_Abbreviation: 2014-070-FA video lines
Source_Used_Citation_Abbreviation: 2015-017-FA video lines
Source_Used_Citation_Abbreviation: 2015-062-FA data
Source_Used_Citation_Abbreviation: 2015-017-FA video lines
Source_Used_Citation_Abbreviation: 2016-004-FA data
Source_Used_Citation_Abbreviation: 2016-038-FA video lines
Source_Used_Citation_Abbreviation: 2017-009-FA data
Source_Used_Citation_Abbreviation: 2017-030-FA data
Source_Used_Citation_Abbreviation: 2017-043-FA data
Source_Used_Citation_Abbreviation: 2017-044-FA data
Source_Used_Citation_Abbreviation: 2019-008-FA data
Source_Used_Citation_Abbreviation: 2013-2019 sediment samples
Source_Used_Citation_Abbreviation: 2016-2019 station data
Process_Date: 2023
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Page C. Valentine

Contact_Position: Research Geologist
Contact_Address:

Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA

Contact_Voice_Telephone: (508) 548-8700 x2239
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: pvalentine@usgs.gov

Process_Step:

Process_Description:

Concurrent with the first process step - a file geodatabase was created using ArcCatalog 10.3.1. Within this file geodatabase, a feature dataset was created to contain the datasets associated with the interpretation. The feature dataset was defined with a custom Mercator projection using the following parameters: central longitude -70 degrees 19 minutes; latitude of true scale 41 degrees 39 minutes; false easting and false northing, both 0; datum, NAD 83; linear unit meter. The interpretation of the seabed in the quadrangle extended beyond the quadrangle bounds to help alleviate "boundary faults" when the interpretation is completed in adjacent quadrangles. This "extension" explains the small substrate interpreted in quadrangle 2 (AC) based on the station located in quadrangle 3. Once the interpretation was drawn on the PDF, the file was opened in Acrobat Professional and the image was exported at 600 DPI as a TIFF image. This image was then brought into ArcMap and georeferenced based on the graticules and boundaries in the image. The geologic interpretation boundaries were then traced and added to the geodatabase. This is an iterative process taking place from 2018-2022 in conjunction with the work done on the PDF maps by Page C. Valentine. Over time the software was upgraded from 10.3.1 to 10.6.1 and finally 10.8.1 with the final work in ArcMap 10.8.1. The process date represents the initial start of the work and geodatabase creation. This process step and the subsequent steps using were performed by the same person - VeeAnn A. Cross.

Process_Date: 2018
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross

Contact_Position: Marine Geologist
Contact_Address:

Address_Type: Mailing and Physical
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598

Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov

Process_Step:

Process_Description:

The final modifications to the polygons and clean-up of the polygons and attribute table were performed using ArcMap 10.8.1. This included adding the attribute Area_km and using the "Calculate geometry" function in the attribute table to calculate the area of each polygon in square kilometers. The spatial reference for the calculation was based on the custom Mercator projection of the file geodatabase.

Process_Date: 2023

Process_Step:

Process_Description:

The polygon feature class interpretation was exported from the file geodatabase (ArcGIS 10.8.1) to a shapefile (q2_geologic_interp.shp) using the data frame projection of Geographic, NAD83. Layer files to represent symbology were also created to represent the four representations of the seabed to correspond with the maps in the related report (Valentine and Cross, 2024). These layer files are for the geologic substrate (q2_geologic_interp.lyr), sediment mobility (q2_geologic_sediment_mobility.lyr), substrate coarseness (q2_geologic_substrate_coarseness.lyr), and substrate mud content (q2_geologic_mud_content.lyr).

Process_Date: 2023

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 15

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: D_North_American_1983
Ellipsoid_Name: GRS_1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: q2_geologic_interp
Entity_Type_Definition:

Interpreted substrate polygons of quadrangle 2 located in the Stellwagen Bank National Marine Sanctuary region.

Entity_Type_Definition_Source: U.S. Geological Survey

Attribute:

Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 14

Attribute:

Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 16

Attribute:

Attribute_Label: Sub_Unit_S
Attribute_Definition:

Substrate Unit Symbol abbreviation corresponding to the geologic substrate ("geo_substr") name.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: A1
Enumerated_Domain_Value_Definition:

Abbreviated symbol for A1 r_cgS where r = rippled, cgS = coarse-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: C
Enumerated_Domain_Value_Definition:

Abbreviated symbol for C i_cbG where i = immobile, c = cobble, b = boulder, G = gravel

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: H
Enumerated_Domain_Value_Definition:

Abbreviated symbol for H r_fgS where r = rippled, fgS = fine-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: K
Enumerated_Domain_Value_Definition:

Abbreviated symbol for K r_cgS where r = rippled, cgS = coarse-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: L
Enumerated_Domain_Value_Definition:

Abbreviated symbol for L i_mfgS where i = immobile, m = muddy, fgS = fine-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: P
Enumerated_Domain_Value_Definition:

Abbreviated symbol for P i_mfgS where i = immobile, m = muddy, fgS = fine-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: R
Enumerated_Domain_Value_Definition:

Abbreviated symbol for R i_fgsM where i = immobile, fgS = fine-grained sand, M = mud

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: X
Enumerated_Domain_Value_Definition:

Abbreviated symbol for X i_fgS where i = immobile, fgS = fine-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Y
Enumerated_Domain_Value_Definition:

Abbreviated symbol for Y r_cgS where r = rippled, cgS = coarse-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Z
Enumerated_Domain_Value_Definition:

Abbreviated symbol for Z r_cgS where r = rippled, cgS = coarse-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AA
Enumerated_Domain_Value_Definition:

Abbreviated symbol for AA r_gcgS / i_pcG where r = rippled, g = gravelly, cgS = coarse-grained sand, / = overlying, or partial veneer over, i = immobile, p = pebble, c = cobble, G = gravel

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AB
Enumerated_Domain_Value_Definition:

Abbreviated symbol for AB r_fgS where r = rippled, fgS = fine-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AC
Enumerated_Domain_Value_Definition:

Abbreviated symbol for AC r_cgS r = rippled, cgS = coarse-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AG
Enumerated_Domain_Value_Definition:

Abbreviated symbol for AG r_cgS where r = rippled, cgS = coarse-grained sand

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute:

Attribute_Label: geo_substr
Attribute_Definition:

Geologic substrate unit name that designates a unique substrate area on the seabed of quadrangle 2. These definitions include all substrates present in quadrangle 2, including the ones that are not mappable as separate polygons in the shapefile, but are referenced in other unit definitions so included here.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: A1 r_cgS
Enumerated_Domain_Value_Definition:

Rippled, coarse-grained sand. Substrate A1 is a mobile, coarse-grained sand deposit that covers the southwestern part of Stellwagen Bank. Water depth range of the stations is 19 to 48 m and of the mapped substrate 19 to 55 m. A1 reaches its deepest depths of 55 m along the base of the slope below the bank's Southwest Corner. Mean weight percents of aggregates and composite grades: mud, <1; sand, 97 (fgS, 2; cgS, 95); gravel, 3 (G1, 3; G2, <1). Substrate A1 extends northward onto the crest and western flank of Stellwagen Bank in quadrangle 5 (fig. 1; Valentine and Cross, 2024), onto the eastern flank of the bank in quadrangle 6 (Valentine and Gallea, 2015), and onto the southeastern flank of the bank in quadrangle 3. The substrate is dominantly coarse-grained sand and is very low in mud and fine-grained sand content. Its surface is covered with storm-generated sand ripples with wavelengths of 0.5 to 1.0 m, and the orientation of ripple crests varies from N-S to NW-SE. The ripples are symmetrical and well-shaped (sometimes with narrow, sharply-defined crests and sometimes with broad crests hosting secondary ripples) when first formed by storm wave currents, but subsequently are rounded by biological disturbance and flattened by bottom-tending fishing gear. Some samples of substrate A1 occur within the area occupied by substrate AA and are not mappable at the present scale and are represented on maps by a symbol (Map D Sheet 1, Valentine and Cross, 2024). Substrate A1 is similar to substrate A3 in its mud and sand content and lies at similar water depths. However, substrate A3 contains much more fine-grained sand (16 weight percent). Each sample from A3 generally contains 10 weight percent or more of fine-grained sand, mostly as 3 phi sand, and its surface is covered with smaller ripples. Substrate A3 samples occur within the area occupied by substrate A1 and are not mappable as a coherent unit at the present scale and are represented on maps by a symbol (Map D Sheet 1, Valentine and Cross, 2024). Substrate A1 is similar texturally to substrate Z, also a rippled, coarse-grained sand; but they are separated geographically, as substrate Z lies south of Stellwagen Bank in deeper water depths in Race Point Channel.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: A3 r_cgS
Enumerated_Domain_Value_Definition:

This is not mappable as a separate polygon but included because of references to the unit elsewhere in the document. Rippled, coarse-grained sand. Substrate A3 is a collection of mobile, coarse-grained sand deposits that lie chiefly on the southwestern part of Stellwagen Bank within the area occupied by substrate A1. Water depth range of stations is 19 to 59 m. Mean weight percents of aggregates and composite grades: mud, 1; sand, 99 (fgS, 16; cgS, 82); gravel, <1 (G1, <1; G2 0). Substrate A3 is also present within the area of substrate A1 on the crest and western flank of the bank in quadrangle 5 to the north (fig. 1; Valentine and Cross, 2024) and on the southeastern flank of the bank in quadrangle 3. Substrate A3 is similar to substrate A1 in being a rippled, coarse-grained sand and having a very low mud content. It differs from A1 in that samples of A3 generally contain 10 weight percent or more of fine-grained sand, mostly as 3 phi sand, and its surface ripples are much smaller, with wavelengths of 10 to 20 cm. Substrate A3 is also similar to substrate A2, which lies on the far eastern flank of the bank in quadrangle 6 (fig. 1; Valentine and Gallea, 2015). They both contain more fine-grained sand than substrate A1, but A2 has less fine-grained sand than A3 and is immobile, and it lies at deeper water depths (53-77 m). As is the case in quadrangle 5 to the north, in quadrangle 2 substrate A3 is texturally equivalent to substrate K, but it is geographically separated from it by substrate H. The scattered deposits of substrate A3 in quadrangle 2 are not mappable as a coherent unit at the present scale. The locations of A3 sediment samples in areas occupied by substrates A1, AA, and AB not mappable as a coherent unit at the present scale and are represented on maps by a symbol (Map D Sheet 1, Valentine and Cross, 2024).

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: C i_cbG
Enumerated_Domain_Value_Definition:

Immobile, cobble, boulder gravel. Substrate C is a boulder ridge whose gravelly base is partially covered by a layer of rippled, coarse-grained sand. It occupies 0.4 km2 or 0.2 percent of quadrangle 2. This feature lies in the middle of Race Point Channel and is interpreted to be a boulder ridge based on multibeam topographic imagery. Water depth of the two stations is 58 m and of the mapped substrate 55 to <60 m. Weight percents of aggregates and composite grades of the single sample of sediment partial veneer overlying gravel at the base of the boulder ridge: mud, 1; sand, 88; (fgS, 15; cgS, 73); gravel, 10 (G1, 10; G2, 0). Substrate C is a linear feature oriented east-west; its eastern part is bounded by substrate Z and its western part by substrate Y.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: H r_fgS
Enumerated_Domain_Value_Definition:

Rippled, fine-grained sand. Substrate H is a mobile, fine-grained sand deposit that lies on the southwestern flank of Stellwagen Bank. Water depth range of the stations is 39 to 42 m and of the mapped substrate 37 to 42 m. Mean weight percents of aggregates and composite grades: mud, 1; sand, 99 (fgS, 89; cgS, 10); gravel, 0 (G1, 0; G2, 0). Substrate H extends northward onto the lower western flank of the bank in quadrangle 5 (fig. 1; Valentine and Cross, 2024). The surface of the substrate is characterized by low, long-wavelength (approximately 40 to 50 m) ripples that are visible in multibeam topographic imagery and as depicted by 1-m contours. Shell deposits are present in ripple troughs. Because this rippled, fine-grained sand substrate is bounded upslope to the east by the rippled, coarse-grained sand of substrate A1 (which appears to override it from the east) and downslope to the west by rippled, coarse-grained sand of substrate K; and because substrate H has an irregular southwestern edge where it abuts K; it is likely that substrate H represents a fine-grained sand sheet that has moved downslope to override substrate K and now separates two coarse-grained sand substrates (A1 and K). This suggests that the long-wavelength ripples of the surface of substrate H are relict and that the substrate may or may not be mobile at present. The timing of such a mass movement event or events is not known. Substrate H texturally resembles substrate L, an immobile, muddy, fine-grained sand (which lies below substrate K on the western flank of the bank) in the ratio of fine- to coarse-grained sand content but substrate H contains less mud.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: K r_cgS
Enumerated_Domain_Value_Definition:

Rippled, coarse-grained sand. Substrate K is a mobile, coarse-grained sand deposit that lies on the southwestern flank of Stellwagen Bank, northwest of its Southwest Corner. Water depth range of the stations is 41 to 56 m and of the mapped substrate 40 to 56 m. Mean weight percents of aggregates and composite grades: mud, 1; sand, 99; (fgS, 19; cgS, 80); gravel, 0 (G1, 0; G2, 0). Substrate K extends northward into quadrangle 5 (fig. 1; Valentine and Cross, 2024) onto the lower western flank of Stellwagen Bank near the eastern end of Southwestern Spur. The substrate is dominantly coarse-grained sand and is low in mud, but it contains an appreciable amount of fine-grained sand (and 3 phi sand is more abundant than 4 phi sand). As is the case in quadrangle 5 to the north, substrate K is texturally equivalent to substrate A3, which is represented by scattered deposits within the area occupied by substrate A1. To the east, upslope in shallower water, substrate K is bounded by the rippled, fine-grained sand of substrate H (which multibeam topographic imagery suggests has encroached upon substrate K) and by the rippled coarse-grained sand of substrate A1. To the west, in deeper water, substrate K is bounded by the immobile, muddy, fine-grained sands of substrates L and P. Thus, substrate K, a coarse-grained sand, lies between finer-grained substrates H (upslope) and L and P (downslope) indicating that K was not deposited by present-day sedimentary transport processes; its depositional history is unclear. Substrate K is bounded to the south by substrate X, an immobile, fine-grained sand that lies in a small valley that incises the bank adjacent to its Southwest Corner.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: L i_mfgS
Enumerated_Domain_Value_Definition:

Immobile, muddy, fine-grained sand. Substrate L is an immobile, muddy, fine-grained sand deposit that lies on the lower, western flank of Stellwagen Bank. Water depth range of the stations is 50 to 58 m and of the mapped substrate 49 to 58 m. Mean weight percents of aggregates and composite grades: mud, 9; sand, 90 (fgS 75; cgS, 15); gravel, 0 (G1, 0; G2, 0). Substrate L extends northward into quadrangle 5 (fig. 1; Valentine and Cross, 2024) onto the lower western flank of Stellwagen Bank. It lies between substrate K (upslope; mud content 1 wt pct) and substrate P (downslope; mud 23 wt pct) in a region where mud content increases with increasing water depth from bank to basin. Note that substrate L is identified as a muddy, fine-grained sand even though the threshold of ≥10 wt pct mud is not met (Valentine, 2019). Justification for this is that substrate L extends northward into quadrangle 5 from quadrangle 2, where the mud criterion is met. As in quadrangle 5, substrate L in quadrangle 2 is texturally different from its bounding substrates K and P in mud, coarse-grained sand, 3-phi sand and 4-phi sand content, in topographic position, and in water depth. Substrate L in quadrangle 2 is texturally equivalent to substrate G1 that occurs off the eastern flank of Stellwagen Bank in quadrangle 6 (fig. 1; Valentine and Gallea, 2015) in much deeper water (85-171 m). Substrate L is similar texturally to substrates X and AB.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: P i_mfgS
Enumerated_Domain_Value_Definition:

Immobile, muddy, fine-grained sand. Substrate P is an immobile, muddy, fine-grained sand deposit that lies in Stellwagen Basin and bounds the southwestern part of Stellwagen Bank; it extends into adjacent Little Stellwagen Basin at the western approach to Race Point Channel. Water depth range of the stations and the mapped substrate is 51 to 68. Mean weight percents of aggregates and composite grades: mud, 23; sand, 76 (fgS, 68; cgS, 8); gravel, <1 (G1, <1; G2, 0). Substrate P extends into quadrangle 5 to the north where it also lies in Stellwagen Basin (fig. 1; Valentine and Cross, 2024). In quadrangle 2, substrate P abuts several texturally varied substrates to the east along the topographic transition from Stellwagen Bank into Stellwagen Basin and Little Stellwagen Basin. These substrates, from north to south, are muddy, fine-grained sand (L), coarse-grained sand (K), fine-grained sand (X), coarse-grained sand, (A), fine-grained sand (AB), and coarse-grained sand (Y). To the west, in somewhat deeper water, lies the fine-grained sandy mud (substrate R) of Stellwagen Basin.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: R i_fgsM
Enumerated_Domain_Value_Definition:

Immobile, fine-grained sandy mud. Substrate R is an immobile, fine-grained sandy mud deposit that occupies Stellwagen Basin in the southwestern part of quadrangle 2. Water depth range of the stations and the mapped substrate is 60 to 64 m. Mean weight percents of aggregates and composite grades: mud, 68; sand, 32 (fgS, 29; cgS, 3); gravel, <1 (G1, <1; G2, 0). Substrate R also is present in quadrangle 5 to the north (Valentine and Cross, 2024). It is bounded to the east by substrate P, a muddy, fine-grained sand with a lower mud content (23 wt pct). Substrate R is characterized by the presence of fish and crab burrows.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: X i_fgS
Enumerated_Domain_Value_Definition:

Immobile, fine-grained sand. Substrate X is an immobile, fine-grained sand deposit that occupies a small valley located on the western flank of the bank’s southwest corner. Water depth range of the stations and the mapped substrate is 44 to 55 m. Mean weight percents of aggregates and composite grades: mud, 5; sand, 95 (fgS, 82; cgS, 13); gravel, <1 (G1, <1; G2, 0). It is bounded to the north by the rippled, coarse-grained sand of substrate K; and to the east at shallower depths by the rippled coarse-grained sand of substrate A1. Substrate X is bounded to the southwest at deeper depths by the muddy, fine-grained sand of substrate P in Stellwagen Basin. Substrate X is texturally similar to two other substrates (L, AB). They are separated geographically, but they all lie on the flank of Stellwagen Bank. Substrate L is a muddy, fine-grained sand (49-58 m) that is present north of substrate X on the western flank of the bank; substrate AB is a fine-grained sand (44-63 m) that is present on the southern flank of the bank facing Race Point Channel.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Y r_cgS
Enumerated_Domain_Value_Definition:

Rippled, coarse-grained sand. Substrate Y is a mobile, coarse-grained sand deposit lying in the western part of Race Point Channel between Stellwagen Bank to the north and Cape Cod to the south. Water depth range of the stations and mapped substrate is 54 to 64 m. Mean weight percents of aggregates and composite grades: mud, 4; sand, 95; (fgS, 36; cgS, 59); gravel, 1 (G1, 1; G2, 0). The northern part of substrate Y lies at somewhat shallower depths (≤60 m) than the southern part (>60 m). Substrate Y is bounded by the fine-grained sand of substrate AB to the north and coarse-grained sand of substrate Z to the east. To the west it abuts the muddy, fine-grained sand of substrate P in Stellwagen Basin and Little Stellwagen Basin. Substrate AC, interpreted to be an east-west aligned gravel ridge, extends westward from substrate Z into the area occupied by substrate Y.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Z r_cgS
Enumerated_Domain_Value_Definition:

Rippled, coarse-grained sand. Substrate Z is a mobile, coarse-grained sand deposit lying in Race Point Channel between Stellwagen Bank to the north and Cape Cod to the south. Water depth range of the stations is 51 to 56 m and of the mapped substrate 50 to 60 m. Mean weight percents of aggregates and composite grades: mud, 2; sand, 98; (fgS, 9; cgS, 89); gravel, 1 (G1, 1; G2, <1). Substrate Z is bounded to the north by mobile, fine-grained sand substrate AB, to the west and south by rippled, coarse-grained sand substrate Y, and to the east it extends out of the mapped area into quadrangle 3. Although substrates Y and Z both are coarse-grained sands, substrate Z lies at somewhat shallower depths and has a higher coarse-grained sand content (89 wt pct) than Y (59 wt pct), which lies at somewhat deeper depths near the western entrance of Race Point Channel.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AA r_gcgS / i_pcG
Enumerated_Domain_Value_Definition:

Rippled, gravelly, coarse-grained sand; partial veneer on immobile, pebble, cobble gravel. Substrate AA is a layered substrate of mobile sand that partially covers immobile, pebble, cobble gravel on the southwestern part of Stellwagen Bank, north of its Southwest Corner. Water depth range of the stations and mapped substrate is 27 to 35 m. Mean weight percents of aggregates and composite grades of the sediment partial veneer overlying gravel: mud, <1; sand, 55; (fgS, 6; cgS, 49); gravel, 45 (G1, 16; G2, 29). Substrate AA is surrounded by substrate A1. The area occupied by substrate AA includes deposits of substrates A1 and A3 as bedforms that are flattened by fishery trawling and dredging and subsequently reformed by storm currents; so that at times the seabed is gravel partially covered by sand and represents substrate AA, and at other times the seabed is totally covered by sand and represents substrates A1 and A3. The locations of A1 and A3 sediment samples in areas occupied by substrate AA are not mappable at the present scale and are represented on maps by a symbol (Map D Sheet 1, Valentine and Cross, 2024).

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AB r_fgS
Enumerated_Domain_Value_Definition:

Rippled, fine-grained sand. Substrate AB is a mobile, fine-grained sand deposit that lies on the southern flank of Stellwagen Bank in the northern part of Race Point Channel. Water depth range of the stations and the mapped substrate is 44 to 63 m. Mean weight percents of aggregates and composite grades: mud, 4; sand, 96 (fgS, 71; cgS, 25); gravel, <1 (G1, <1; G2, 0). Substrate AB is bounded to the north by the rippled, coarse-grained sand of substrate A1 on Stellwagen Bank; to the south by the rippled, coarse-grained sands of substrates Y and Z in Race Point Channel; and to the west by the immobile, muddy, fine-grained sand of substrate P in Stellwagen Basin. Within the area occupied by substrate AB, deposits of two substrates occur that are represented by too few samples to be mappable as coherent units at the present scale. One of them, substrate AD, is a rippled, coarse-grained sand that overlies a series of nested, arcuate gravel ridges that are observed in multibeam topographic imagery and are interpreted to represent a glacial ice fall deposit at the foot of Stellwagen Bank. The other, substrate AE, is a rippled, coarse-grained sand that overlies a topographic feature interpreted to be a gravel ridge or moraine that lies south of the southwestern edge of Stellwagen Bank. Substrate AD contains more coarse-grained sand and less fine-grained sand than substrate AE. The locations of AD and AE sediment samples in the area occupied by substrate AB are not mappable at the present scale and are represented on maps by a symbol (Map D Sheet 1, Valentine and Cross, 2024). Substrate AB is similar texturally to substrates L and X.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AC r_cgS
Enumerated_Domain_Value_Definition:

Rippled, coarse-grained sand. Substrate AC is a mobile, coarse-grained sand deposit that lies in Race Point Channel in quadrangles 2 and 3. The largest portion of substrate AC lies in quadrangle 3 to the east. It occupies <0.1 km2 or <0.1 percent of quadrangle 2. Water depth of the mapped area in quadrangle 2 is ~60 m. No sediment samples were collected in quadrangle 2. Weight percents of aggregates and composite grades of the one sample from quadrangle 3: mud, 2; sand, 98 (fgS, 12; cgS, 86; gravel, <1 (G1, <1; G2, 0). Substrate AC is interpreted to be a rippled, coarse-grained sand because its surface displays large bedforms observable in multibeam topographic imagery in both quadrangles 2 and 3. They trend NW-SE, approximately normal to the trend of Race Point Channel. Although substrate AC was not sampled in quadrangle 2, it is mapped as extending a short distance into quadrangle 2 from quadrangle 3 based on the presence of its distinctive bedforms.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AD r_cgS
Enumerated_Domain_Value_Definition:

This is not mappable as a separate polygon but included because of references to the unit elsewhere in the document. Rippled, coarse-grained sand. Substrate AD is a collection of mobile, coarse-grained sand deposits that lie on several partly-buried, nested, arcuate gravel ridges that are interpreted from multibeam topographic imagery to represent a glacial ice fall deposit at the foot of the southern slope of Stellwagen Bank in the northern part of Race Point Channel. Water depth range of the stations is 44 to 45 m. Mean weight percents of aggregates and composite grades: mud, 1; sand, 92; (fgS, 10; cgS, 82); gravel, 6 (G1, 6; G2, 0). Substrate AD is not mappable as a coherent unit at the present scale. It is represented by 4 stations that lie in the area occupied by substrate AB. Substrate AD is texturally similar to AE, which also is an unmappable substrate lying within the area of substrate AB, but AD has a higher weight percent of coarse-grained sand. The locations of AD sediment samples in the area occupied by substrate AB are not mappable at the present scale and are represented on maps by a symbol (Map D Sheet 1, Valentine and Cross, 2024).

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AE r_cgS
Enumerated_Domain_Value_Definition:

This is not mappable as a separate polygon but included because of references to the unit elsewhere in the document. Rippled, coarse-grained sand. Substrate AE is a collection of mobile, coarse-grained sand deposits that lie on a partly-buried feature that is interpreted from multibeam topographic imagery to be a gravel ridge or moraine that is located in the northern part of Race Point Channel near the southern margin of Stellwagen Bank. Water depth range of the stations is 49 to 54 m. Mean weight percents of aggregates and composite grades: mud, 3; sand, 95; (fgS, 34; cgS, 61); gravel, 2 (G1, 2; G2, <1). Substrate AE is not mappable as a coherent unit at the present scale. It is represented by 5 stations that lie in the area occupied by substrate AB. Substrate AE is texturally similar to substrate AD but AE has a lower weight percent of coarse-grained sand. The locations of AE sediment samples in the area occupied by substrate AB are not mappable at the present scale and are represented on maps by a symbol (Map D Sheet 1, Valentine and Cross, 2024).

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AF r_fgS
Enumerated_Domain_Value_Definition:

This is not mappable as a separate polygon but included because of references to the unit elsewhere in the document. Rippled, fine-grained sand. Substrate AF is a collection of mobile, fine-grained sand deposits that lie at the western end of Race Point Channel in Little Stellwagen Basin. Water depth range of the stations is 62 to 64 m. Mean weight percents of aggregates and composite grades: mud, 4; sand, 95 (fgS, 62; cgS, 33); gravel, 1 (G1, 1; G2, 0). Substrate AF is not mappable as a coherent unit at the present scale. It is represented by 5 stations that lie in the area occupied by substrate P, an immobile, muddy, fine-grained sand. The substrate AF samples lie near the boundary of substrate P with substrate Y, a rippled, coarse-grained sand that lies to the east in Race Point Channel. The deposits of AF apparently represent a textural transition area between substrates P and Y. The locations of AF sediment samples in the area occupied by substrate P are not mappable at the present scale and are represented on maps by a symbol (Map D Sheet 1, Valentine and Cross, 2024).

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AG r_cgS
Enumerated_Domain_Value_Definition:

Rippled, coarse-grained sand. Substrate AG is a mobile, coarse-grained sand deposit that lies on the south flank of Little Stellwagen Basin north of Cape Cod and extends eastward into quadrangle 3. It occupies 0.4 km2 or 0.2 percent of quadrangle 2. It is represented by two stations in quadrangle 2, one in the mapped area and one located nearby to the south in an unmapped area of quadrangle 2. Water depth range of the stations is 55 to 58 m and of the mapped substrate ~55 to ~60 m. Mean weight percents of aggregates and composite grades of two samples collected in quadrangle 2: mud, <1; sand, 100 (fgS, 5; cgS, 95); gravel, 0 (G1, 0; G2 0). The surface of substrate AG is covered with storm-generated sand ripples. The substrate likely extends southward into an unmapped area of shallowing water depths on the northern margin of Cape Cod. Interpretation of multibeam topographic and backscatter imagery indicates that substrate AG is a recognizable feature that extends eastward along the northern slope of Cape Cod into quadrangle 3 where it abuts substrate AQ, a fine-grained sand located in quadrangle 3.

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AH r_cgS
Enumerated_Domain_Value_Definition:

This is not mappable as a separate polygon but included because of references to the unit elsewhere in the document. Rippled, coarse-grained sand. Substrate AH is a collection of mobile, coarse-grained sand deposits that lie on the south flank of Little Stellwagen Basin. It is represented by two stations. Water depth of the stations is 61 m. Mean weight percents of aggregates and composite grades: mud, <1; sand, 100 (fgS, 16; cgS, 84); gravel, 0 (G1, 0; G2 0). The substrate likely extends southward into an unmapped area in shallowing water depths on the northern margin of Cape Cod. Substrate AH is not mappable as a coherent unit at the present scale. two stations lie in and near the southern part of the area occupied by substrate Y. The surface of AH is covered with storm-generated sand ripples. The substrate has a lower mud content and a higher coarse-grained sand content than substrate Y. Substrate AH is texturally similar to substrate A3, but it is recognized as a separate substrate because it is separated geographically from deposits of A3 by Race Point Channel. The locations of AH sediment samples in the area occupied by substrate Y are not mappable at the present scale and are represented on maps by a symbol (Map D Sheet 1, Valentine and Cross, 2024).

Enumerated_Domain_Value_Definition_Source:

Page Valentine, U.S. Geological Survey (Valentine and Cross, 2024)

Attribute:

Attribute_Label: geo_descr
Attribute_Definition:

Brief text description corresponding to the geologic substrate attribute "geo_substr".

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain:

Character set (text) not to exceed the 255 character limit of a shapefile attribute.

Attribute:

Attribute_Label: substr_mob
Attribute_Definition:

Substrate mobility interpreted unit based on the presence of sand ripples observed in video and photographic imagery. Not all units referred to in the definitions are mappable as separate polygons, but are identified in the area mapped.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: boulder ridges >=1 meter in height
Enumerated_Domain_Value_Definition:

Boulder ridges greater than or equal to 1 meter in height equivalent to substrate C.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: immobile sediment
Enumerated_Domain_Value_Definition:

Fine-grained sand (substrate X), muddy fine-grained sand (substrates L, P), fine-grained sandy mud (substrate R)

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: mobile and immobile sediment
Enumerated_Domain_Value_Definition:

Rippled, gravelly, coarse-grained sand partial veneer on immobile pebble, cobble gravel

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: mobile sediment
Enumerated_Domain_Value_Definition:

Rippled, coarse-grained sand (equivalent to substrates A1, A3, K, Y, Z, AC, AD, AE, AG and AH) and rippled, fine-grained sand (equivalent to substrates H, AB and AF)

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute:

Attribute_Label: mob_descr
Attribute_Definition:

Text description corresponding to the substrate mobility attribute "substr_mob".

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: Character set (text).

Attribute:

Attribute_Label: sub_grain
Attribute_Definition:

Substrate grain size interpreted unit based on the mean weight percent of the sand fraction. Not all units referred to in the definitions are mappable as separate polygons, but are identified in the area mapped.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: boulder ridges >=1 meter in height
Enumerated_Domain_Value_Definition:

Boulder ridges greater than or equal to 1 meter in height equivalent to substrate C.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: dominated by coarse-grained sand in the sand fraction
Enumerated_Domain_Value_Definition:

Coarse-grained sand in which coarse-grained sand (0, 1, and 2 phi combined) constitutes the largest portion of the sand fraction; equivalent to substrates A1, A3, K, Y, Z, AA, AC, AD, AE, AG, and AH.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: dominated by fine-grained sand in the sand fraction
Enumerated_Domain_Value_Definition:

Fine-grained sand, muddy fine-grained sand, and fine-grained sandy mud in which fine-grained sand (3 and 4 phi combined) constitutes the largest portion of the sand fraction; equivalent to substrates H, L, P, R, X, AB, and AF.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute:

Attribute_Label: grain_desc
Attribute_Definition:

Text description corresponding to the substrate grain size "sub_grain".

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: Character set (text).

Attribute:

Attribute_Label: substr_mud
Attribute_Definition:

Substrate mud content interpreted unit based on the mean weight percent of mud content.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: < 1
Enumerated_Domain_Value_Definition:

Mud content less than 1 mean weight percent; equivalent to substrates A1, AA, AG and AH.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1 to <5
Enumerated_Domain_Value_Definition:

Mud content 1 to less than 5 mean weight percent; equivalent to substrates A3, H, K, Y, Z, AB, AC, AD, AE, and AF.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 5 to <10
Enumerated_Domain_Value_Definition:

Mud content 5 to less than 10 mean weight percent, equivalent to substrate X.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 10 to <20
Enumerated_Domain_Value_Definition:

Mud content 10 to less than 20 mean weight percent; equivalent to substrate L.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 20 to <50
Enumerated_Domain_Value_Definition:

Mud content 20 to less than 50 mean weight percent; equivalent to substrate P.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 50 to <90
Enumerated_Domain_Value_Definition:

Mud content 50 to less than 90 mean weight percent; equivalent to substrate R.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: boulder ridges >=1 meter in height
Enumerated_Domain_Value_Definition:

Boulder ridges were never sampled due to the nature of the ridges, so are not represented by a measured mud weight percent; equivalent to substrate C.

Enumerated_Domain_Value_Definition_Source: Page Valentine, U.S. Geological Survey

Attribute:

Attribute_Label: mud_descr
Attribute_Definition:

Text description corresponding to the substrate mud content "substr_mud".

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: Character set (text).

Attribute:

Attribute_Label: Area_km2
Attribute_Definition:

The area of the polygon, in square kilometers, calculated using the custom Mercator projection specified in the process step.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.032939
Range_Domain_Maximum: 76.1274
Attribute_Units_of_Measure: square kilometers

Overview_Description:

Entity_and_Attribute_Overview:

The geo_substr attribute definitions come from the related report (Valentine and Cross, 2024). In the geo_substr attribute, weight percents described in the domain value definitions may not add to 100 due to rounding of values. Also in the geo_substr attributes, the mean weight percents for the units, sand is divided into two composite grades: fine-grained sand (fgS; 0.062 to <0.25 mm) and coarse-grained sand (cgS; 0.25 to <2mm). Gravel is also divided into two composite grades: Gravel1 (G1; 2 to <8 mm) and Gravel2(G2; 8 to <64 mm). This G1 and G2 are not to be confused with the geologic substrate units G1 i_mfgS and G2 i_mfgS in quadrangle 6. These G1 and G2 are presented in the related report (Valentine and Cross, 2024) as subscripts 1 and 2.
The definitions of the substrate components are fully defined in the related report (Valentine and Cross, 2024) but are also defined here:
i = immobile
cgS = coarse-grained sand
fgS = fine-grained sand
fgcgS = fine- and coarse-grained sand dominated by coarse-grained
cgfgS = coarse-and fine-grained sand dominated by fine-grained
If the S is capitalized, it indicates Sand as a major component. A lower-case s indicates sandy, and not a major component.
M = mud (as a major component)
m = muddy
r = rippled
p = pebble
c = cobble (when not immediately followed by g, which indicates coarse-grained)
b = boulder
G = gravel (as a major component)
g = gravelly
/ = overlying or partial veneer over

Entity_and_Attribute_Detail_Citation: Page Valentine, U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - ScienceBase

Contact_Address:

Address_Type: Mailing and Physical
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225

Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov

Resource_Description:

The dataset contains q2_geologic_interp.shp and the shapefile components, the browse graphic (q2_substrate_interp_browse.png), and FGDC CSDGM metadata in XML format. Additionally, the following ArcGIS 10.8.1 layer files are included: q2_geologic_interp.lyr, q2_geologic_sediment_mobility.lyr, q2_geologic_substrate_coarseness.lyr, and q2_geologic_mud_content.lyr. For the LYR files to work correctly, they need to be in the same folder as the shapefile. Downloading the contents of the ScienceBase landing page does not necessarily keep the LYR files in the same folder with the shapefile.

Distribution_Liability:

Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Shapefile
Format_Version_Number: ArcGIS 10.8.1
Format_Information_Content:

This zip file contains the shapefile, browse graphic, and associated FGDC CSDGM metadata. Additionally, ArcGIS 10.8.1 layer files are included for each variation of the mapping units.

Transfer_Size: 0.5

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/644a7995d34ee8d4adee0435

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/644a7995d34ee8d4adee0435

Network_Resource_Name: https://doi.org/10.5066/P9UL3LWN

Access_Instructions:

The first link downloads all data available from the page as a zip file, the second link is to the page containing the data, and the third link is to the data release main landing page.

Digital_Form:

Digital_Transfer_Information:

Format_Name: WMS
Format_Version_Number: 1.3.0
Format_Information_Content: Web mapping service of the dataset.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalogMaps/mapping/ows/644a7995d34ee8d4adee0435?service=wms&request=getcapabilities&version=1.3.0

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/644a7995d34ee8d4adee0435

Network_Resource_Name: https://doi.org/10.5066/P9UL3LWN

Access_Instructions:

The first link is to the Web Mapping Service (WMS) of the dataset. The second link is to the landing page of the data where individual files can be downloaded. The third link is to the main landing page of the publication.

Digital_Form:

Digital_Transfer_Information:

Format_Name: WFS
Format_Version_Number: 1.0.0
Format_Information_Content: Web feature service of the dataset.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalogMaps/mapping/ows/644a7995d34ee8d4adee0435?service=wfs&request=getcapabilities&version=1.0.0

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/644a7995d34ee8d4adee0435

Network_Resource_Name: https://doi.org/10.5066/P9UL3LWN

Access_Instructions:

The first link is to the Web Feature Service (WFS) of the dataset. The second link is to the landing page of the data where individual files can be downloaded. The third link is to the main landing page of the publication.

Fees: None.

Technical_Prerequisites:

This dataset includes Esri LYR files for representing symbology for the various substrate interpretations. For the LYR files to work correctly, they need to be in the same folder as the shapefile. Downloading the contents of the ScienceBase landing page does not necessarily keep the LYR files in the same folder with the shapefile.

Metadata_Reference_Information:

Metadata_Date: 20241216
Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross

Contact_Position: Marine Geologist
Contact_Address:

Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543

Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov
Contact_Instructions:

The metadata contact email address is a generic address in the event the person is no longer with the USGS.

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P9UL3LWN/q2_geologic_interp_meta.html>