Physiographic Zones of the Sea Floor from Nahant to Salisbury, Massachusetts (polygon shapefile, Geographic WGS 84, Nahant_NH_Pzones)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Elizabeth Pendleton
Publication_Date: 2015
Title:
Physiographic Zones of the Sea Floor from Nahant to Salisbury, Massachusetts (polygon shapefile, Geographic WGS 84, Nahant_NH_Pzones)
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2015-1153
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: https://doi.org/10.3133/ofr20151153
Online_Linkage: https://pubs.usgs.gov/of/2015/1153/
Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Pendleton, E.A.
Originator: Barnhardt, W.A.
Originator: Baldwin, W.E.
Originator: Foster, D.S.
Originator: Schwab, W.C.
Originator: Andrews, B.D.
Originator: Ackerman, S.D.
Publication_Date: 2015
Title:
Sea-Floor Texture and Physiographic Zones of the Inner Continental Shelf From Salisbury to Nahant, Massachusetts, Including the Merrimack Embayment and Western Massachusetts Bay
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2015-1153
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2015/1153/
Online_Linkage: https://doi.org/10.3133/ofr20151153
Description:
Abstract:
These data are qualitatively derived interpretive polygon shapefiles defining sediment type and distribution, and physiographic zones of the sea floor from Nahant to Salisbury, Massachusetts. Many of the geophysical data used to create the interpretive layers were collected under a cooperative agreement among the Massachusetts Office of Coastal Zone Management (CZM), the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), and the U.S. Army Corps of Engineers (USACE). Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of seafloor-geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes because of natural or human effects. The project is focused on the inshore waters of coastal Massachusetts. Data collected during the mapping cooperative involving the USGS have been released in a series of USGS Open-File Reports (https://woodshole.er.usgs.gov/project-pages/coastal_mass/geophydata.html). The interpretations released in this study are for an area extending from the southern tip of Nahant north to Salisbury, Massachusetts. A combination of geophysical and sample data including high-resolution bathymetry and lidar, acoustic-backscatter intensity, seismic-reflection profiles, bottom photographs, and sediment samples was used to create the data interpretations. Most of the nearshore geophysical and sample data (including the bottom photographs) were collected during several cruises between 2000 and 2008. More information about the cruises and the data collected can be found at the Geologic Mapping of the Massachusetts Sea Floor Web page: https://woodshole.er.usgs.gov/project-pages/coastal_mass/.
Purpose:
These sea-floor physiographic zones were created from geophysical and sample data collected from Nahant to Salisbury, and are used to characterize the seafloor in the area. Physiographic zone maps are important data layers for marine resource managers charged with protecting fish habitat, delineating marine boundaries, and assessing environmental change due to natural or human impacts.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19940101
Ending_Date: 20080507
Currentness_Reference: ground condition of data used to derive the interpretation
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.876421
East_Bounding_Coordinate: -70.498785
North_Bounding_Coordinate: 42.737110
South_Bounding_Coordinate: 42.276833
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:3c115fa2-0c3a-47e2-ae89-61d15380f15e
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: Massachusetts Office of Coastal Zone Management
Theme_Keyword: CZM
Theme_Keyword: Sea floor
Theme_Keyword: Marine Geology
Theme_Keyword: Interpretation
Theme_Keyword: Bathymetry
Theme_Keyword: Backscatter
Theme_Keyword: Slope
Theme_Keyword: Topography
Theme_Keyword: Esri Shapefile
Theme_Keyword: Physiographic Zones
Theme_Keyword: Rocky Zone
Theme_Keyword: Hard-bottom Plain
Theme_Keyword: Nearshore Ramp
Theme_Keyword: Nearshore Basin
Theme_Keyword: Sediment Samples
Theme_Keyword: Seismic-reflection Profiles
Theme_Keyword: Outer Basin
Theme_Keyword: Shelf Valleys
Theme_Keyword: Ebb-tidal Delta
Theme_Keyword: Bay Mouth Shoal
Theme_Keyword: interpretation
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: oceans
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: scientific interpretation
Theme_Keyword: sea-floor characteristics
Theme_Keyword: marine geology
Theme_Keyword: geospatial datasets
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Massachusetts Bay
Place_Keyword: Atlantic Ocean
Place_Keyword: Boston Harbor
Place_Keyword: Nahant
Place_Keyword: Gloucester
Place_Keyword: Marblehead
Place_Keyword: Boston Harbor Islands
Place_Keyword: Cape Ann
Place_Keyword: Swampscott
Place_Keyword: Rockport
Place_Keyword: Ipswich
Place_Keyword: Essex
Place_Keyword: Lynn
Place_Keyword: Peabody
Place_Keyword: Salem Sound
Place_Keyword: Ipswich Bay
Place_Keyword: Merrimack Embayment
Place_Keyword: Annisquam Harbor
Place_Keyword: Manchester Bay
Place_Keyword: Plum Island
Place_Keyword: Castle Neck
Place_Keyword: Crane Beach
Place_Keyword: Salisbury
Place_Keyword: Manchester-by-the-sea
Place_Keyword: Salem
Place_Keyword: Beverly
Place_Keyword: Newburyport
Place_Keyword: Merrimack River
Place_Keyword: Gulf of Maine
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Additionally, there are limitations associated with qualitative seafloor interpretations. Because of the scale of the source geophysical data and the spacing of samples, not all changes in sea floor texture are captured. The data were mapped between 1:8,000 and 1:25,000, but the recommended scale for application of these data is 1:25,000. Features below 5,000 m2 or less than 50 m wide were not digitized due to positional uncertainty, lack of sample information, and the often ephemeral nature of small-scale sea floor features. Not all digitized sea floor features contained sample information, so often the physiographic zone is characterized by the nearest similar feature that contains a sample. Conversely, sometimes a digitized feature contained multiple samples and not all of the samples within the feature were in agreement. In these cases the dominant sample texture was chosen to represent the primary sediment type for the polygon. Samples from rocky areas often only consist of bottom photographs, because large particle size often prevents the recovery of a sediment sample. Bottom photo classification can be subjective, such that determining the sediment type that is greater than 50% of the view frame is estimated by the interpreter and may differ among interpreters. Bottom photo transects often reveal changes in the sea floor over distances of less than 100 m and these changes are often not observable in acoustic data. Heterogeneous sea floor texture can change very quickly, and many small-scale changes will not be detectable or mappable at a scale of 1:25,000. The boundaries of polygons are often inferred based on sediment samples, and even boundaries that are traced based on amplitude changes in geophysical data are subject to migration. Polygon boundaries should be considered an approximation of the location of a change in physiographic zone.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Elizabeth A. Pendleton
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2259
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: ependleton@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: Browse_Graphic_File_Description:
Image of the physiographic zone shapefile for the Massachusetts inner continental shelf from Nahant to Salisbury
Browse_Graphic_File_Type: PNG
Native_Data_Set_Environment:
Microsoft Windows 7.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4000
Cross_Reference:
Citation_Information:
Originator: Kelley, J.T.
Originator: Barnhardt, W.A.
Originator: Belknap, D.F.
Originator: Dickson, S.M.
Originator: Kelley, A.R.
Publication_Date: 1996
Title:
The seafloor revealed: the geology of the northwestern Gulf of Maine inner continental shelf
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Maine Geological Survey Open-File Report
Issue_Identification: 96-6
Publication_Information:
Publication_Place: Augusta, ME
Publisher:
Maine Geological Survey, Natural Resources Information and Mapping Center
Cross_Reference:
Citation_Information:
Originator: McMullen, K.Y
Originator: Paskevich, V.F.
Originator: Poppe, L.J.
Publication_Date: 2012
Title:
USGS East-coast Sediment Analysis: Procedures, Database, and GIS Data
Edition: 2.2
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Open File Report
Issue_Identification: 2005-1001
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2005/1001/
Cross_Reference:
Citation_Information:
Originator: Ford, K.H.
Originator: S.E. Voss
Publication_Date: 2010
Title:
Seafloor Sediment Composition in Massachusetts Determined Using Point Data
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Massachusetts Division of Marine Fisheries Technical Report
Issue_Identification: TR-45
Publication_Information:
Publication_Place: New Bedford, MA
Publisher: Massachusetts Division of Marine Fisheries
Online_Linkage: http://www.mass.gov/eea/docs/dfg/dmf/publications/tr-45.pdf
Cross_Reference:
Citation_Information:
Originator: Blackwood, D.S.
Originator: Parolski, K.F.
Publication_Date: 2000
Title:
"Seaboss": an elegantly simple image and sample collecting system
Edition: 1.0
Geospatial_Data_Presentation_Form: extended abstract
Series_Information:
Series_Name:
Proceedings, 6th Annual International Conference on Remote Sensing for Marine Environments
Issue_Identification: Volume 1
Publication_Information:
Publication_Place: Charleston, SC
Publisher: Veridian ERIM International
Data_Quality_Information:
Logical_Consistency_Report:
These data were drawn and vetted for accuracy using the source input rasters and point sample data described in the processing steps and source contributions. Overlapping features and unintentional gaps within the survey area were identified using the topology checker in ArcMap (version 10.2) and corrected or removed.
Completeness_Report:
These physiographic zones are defined for areas where source data exist. In general, gaps in the coverage coincide with gaps in the source data. However, some small data gaps were interpreted through extrapolation.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
These data were produced qualitatively from acoustic and sample data with varying resolutions. Horizontal uncertainty associated with sample collection especially, can be quite high (100's of meters), much higher than positional uncertainty associated with acoustic data (usually less than <10's of meters). The date of sample collection and ship station positioning all contribute to sample position uncertainty. These qualitatively derived polygons outlining sea floor features are estimated to be within 50 meters, horizontally, but locally may be higher when sediment texture delineation is based on sample information alone.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Barnhardt, W.A.
Originator: Andrews, B.D.
Originator: Butman, Bradford
Publication_Date: 2006
Title:
High-Resolution Geologic Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2005-1293
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2005/1293/
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20040417
Ending_Date: 20040508
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Barnhardt and others, 2006
Source_Contribution:
This report provided the published physiographic zone interpretations for an area from Nahant to Gloucester, Massachusetts. The physiographic zone interpretations in this study are adjacent to the physiographic zones in Barnhardt and others (2006) and Barnhardt and others (2009). The interpretations should be nearly seamless and continuous among the 3 interpretations.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Barnhardt, W.A.
Originator: Andrews, B.D.
Originator: Ackerman, S.D.
Originator: Baldwin, W.E.
Originator: Hein, C.J.
Publication_Date: 2009
Title:
High-Resolution Geologic Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2007-1373
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2007/1373/
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20040223
Ending_Date: 20050920
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Barnhardt and others, 2009
Source_Contribution:
This report provided the published physiographic zone interpretations for an area from Cape Ann to Salisbury, Massachusetts. The physiographic zone interpretations in this study are adjacent to the physiographic zones in Barnhardt and others (2006) and Barnhardt and others (2009). The interpretations should be nearly seamless and continuous among the 3 interpretations.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Butman, B.
Originator: Valentine, P.C.
Originator: Middleton, T.J.
Originator: Danforth, W.W.
Publication_Date: 2007
Title:
A GIS Library of Multibeam Data for Massachusetts Bay and the Stellwagen Bank National Marine Sanctuary, Offshore of Boston, Massachusetts
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Digital Data Series
Issue_Identification: 99
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/ds/99/
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19940101
Ending_Date: 19981231
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Butman and others, 2007
Source_Contribution:
This report provided the source geophysical data (sidescan and bathymetry) for the western Massachusetts Bay region including Stellwagen Bank. These data were acquired between 1994 and 1998 by the USGS, Canadian Hydrographic Survey, and University of New Brunswick aboard the Frederick G. Creed. Bathymetric and backscatter data were acquired using Simrad Subsea EM 1000 Multibeam Echo Sounder. These data formed the basis of the physiographic zone interpretations and are included as a source layer in Pendleton and others (2013).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Ford, K.H.
Originator: Huntley, E.C.
Originator: Sampson, D.W.
Originator: Voss, S.
Publication_Date: Unpublished Material
Title: Massachusetts Sediment Database
Geospatial_Data_Presentation_Form: vector digital data
Other_Citation_Details:
This sample database has been compiled and vetted from existing samples and datasets by the Massachusetts Office of Coastal Zone Management. The data are currently unpublished, but may be acquired by contacting the CZM office: 251 Causeway St Boston, MA 02114 (617) 626-1200 czm@state.ma.us
Larger_Work_Citation:
Citation_Information:
Originator: Ford, K.H.
Originator: Voss, S.E.
Publication_Date: 2010
Title:
Seafloor sediment composition in Massachusetts determined using point data
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Massachusetts Division of Marine Fisheries Technical Report
Issue_Identification: TR-45
Publication_Information:
Publication_Place: New Bedford, MA
Publisher: Massachusetts Division of Marine Fisheries
Online_Linkage: http://www.mass.gov/eea/docs/dfg/dmf/publications/tr-45.pdf
Type_of_Source_Media: digital vector
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19550101
Ending_Date: 20110101
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: CZM sample database
Source_Contribution:
Sediment sample databases of Ford and Voss (2010) and McMullen and others (2011) were combined then edited and supplemented with NOAA chart sampling data and over 2,000 bottom photos and descriptions at more than 400 stations by a group of GIS specialists at the Massachusetts Office of Coastal Zone Management (Emily Huntley, personal communication). These data contained sediment laboratory statistics when available, visual descriptions if sediment analysis was not performed or if the site was a bottom photograph, and classification fields of Barnhardt and others (1998), Shepard (1954), and Wentworth (1922) as well as average sediment statistics and phi size, when laboratory analysis was conducted.
Source_Information:
Source_Citation:
Citation_Information:
Originator:
U.S. Army Corps of Engineers, Joint Airborne LiDAR Bathymetry Center of Expertise
Publication_Date: 2008
Title: Massachusetts LiDAR Grid Data in Coastal Areas
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Lidar Data
Issue_Identification: MA coastline
Publication_Information:
Publication_Place: San Diego, CA
Publisher: Fugro Pelagos, Inc
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070428
Ending_Date: 20070806
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: USACE- JALBTCX, 2008
Source_Contribution:
This report provided the source lidar data for the very nearshore (< -5 m) region. Lidar (Light Detection and Ranging) data were acquired with a SHOALS-1000T (for hydrographic & topographic data) using the Joint Airborne LiDAR Bathymetry Center of Expertise (JALBTCX) lidar plane.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Gutierrez, B.J.
Originator: Butman, Bradford
Originator: Blackwood, D.S.
Publication_Date: 2000
Title:
Photographs of the Sea Floor in Western Massachusetts Bay, Offshore of Boston, Massachusetts, July, 1999
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 00-427
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2000/of00-427/
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19990718
Ending_Date: 19990721
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Gutierrez and others, 2000
Source_Contribution:
This report provided the photographs of the seafloor in western Massachusetts Bay. These data were acquired in 1999 by the USGS aboard the Fishing Vessel Isabel S using SEABOSS (Blackwood and Parolski, 2000). The photographs and samples were used to validate physiographic zones interpretations and sediment texture
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2009
Title: MassGIS Data - USGS Color Ortho Imagery (2008/2009)
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: MassGIS Data
Issue_Identification: April 2008/2009
Publication_Information:
Publication_Place: Boston, MA
Publisher: MassGIS
Online_Linkage:
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20080401
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: USGS Color Ortho Imagery (2008/2009)
Source_Contribution:
These data provided the aerial photograph data for the very nearshore and shoreline region and were used to guide the physiographic zone interpretation in the absence of geophysical data. Photographs from the north shore were acquired in 2008 by Fugro Earthdata, Inc under contract of the U.S. Geological Survey at 30-cm resolution. The data are distributed by the Massachusetts Office of Geographic Information (MassGIS).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Pendleton, E.A.
Originator: Baldwin, W.E.
Originator: Barnhardt, W.A.
Originator: Ackerman, S.D.
Originator: Foster, D.S.
Originator: Andrews, B.D.
Originator: Schwab, W.C.
Publication_Date: 2013
Title:
Shallow Geology, Seafloor Texture, and Physiographic Zones of the Inner Continental Shelf from Nahant to Northern Cape Cod Bay, Massachusetts
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2012-1157
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2012/1157/
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19940101
Ending_Date: 20080507
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Pendleton and others (2013)
Source_Contribution:
This report merged and published several topographic, bathymetric and backscatter datasets collected between 1998 and 2009. These data were used as source layers for creating and expanding the physiographic zone interpretations.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Oldale, R.N.
Originator: Bick, Jennifer
Publication_Date: 1987
Title:
Maps and seismic profiles showing geology of the inner continental shelf, Massachusetts Bay, Massachusetts
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Miscellaneous Field Studies Map
Issue_Identification: 1923
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.er.usgs.gov/publication/mf1923
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1987
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Oldale and Bick, 1987
Source_Contribution:
This report provided a surficial geologic interpretation of Massachusetts Bay. The maps made by Oldale and Bick (1987) provided information regarding the likely geologic origin of the sediments of the seafloor, and although the maps were low-resolution compared to the study presented here, they informed the sediment texture interpretations and physiographic zone determination especially in areas of limited sample coverage.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Oldale, R.N.
Originator: Wommack, L.E.
Publication_Date: 1987
Title:
Maps and seismic profiles showing geology of the inner continental shelf, Cape Ann, Massachusetts to New Hampshire
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Miscellaneous Field Studies Map
Issue_Identification: 1892
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.er.usgs.gov/publication/mf1892
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1987
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Oldale and Wommack, 1987
Source_Contribution:
This report provided a surficial geologic interpretation of the southern Merrimack Embayment. The maps made by Oldale and Wommack (1987) provided information regarding the likely geologic origin of the sediments of the seafloor, and although the maps were low-resolution compared to the study presented here, they informed the sediment texture interpretations and physiographic zone determination especially in areas of limited sample coverage.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Hein, C.J.
Originator: FitzGerald, D.M.
Originator: Barnhardt, W.A.
Originator: Stone, B.D.
Publication_Date: 2013
Title:
Onshore-Offshore Surficial Geologic Map of the Newburyport East and Northern Half of the Ipswich Quadrangles, Massachusetts
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Geologic Map
Issue_Identification: GM-13-01
Publication_Information:
Publication_Place: Amherst, MA
Publisher: Massachusetts Geological Survey
Online_Linkage:
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20040223
Time_of_Day: 20050916
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Hein and others, 2013
Source_Contribution:
This report provided geospatial vector data of surficial geologic interpretations from Cape Ann to New Hampshire. These interpretations of shallow and surficial geology were based on the data of Barnhardt and others (2009). The geospatial information was used to guide sediment texture interpretations and physiographic zone determinations.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Oldale, R.N.
Originator: Knebel, H.J.
Originator: Bothner, M.H.
Publication_Date: 1994
Title: Submerged and Eroded Drumlins off Northeastern Massachusetts
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Geomorphology
Issue_Identification: 9
Publication_Information:
Publication_Place: Philadelphia, PA
Publisher: Elsevier
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1994
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Oldale and others, 1994
Source_Contribution:
This paper provided a map of submerged drumlins offshore of Boston Harbor. These identified areas of till and lag deposits were used to aid the interpretation of surficial sediment cover and physiographic zones.
Process_Step:
Process_Description:
The spatial distribution of sea-floor features were qualitatively-analyzed in ArcGIS using several input data sources, including acoustic backscatter, bathymetry, Lidar, bottom photographs, and sediment samples. In order to create the interpretation, first a polygon feature class was created inside a geodatabase by importing a polygon shapefile of the survey area (with ArcMap version 10.2). The feature class was then edited using 'cut polygon' in an edit session. The polygon cuts were done qualitatively based on slope changes in the bathymetry, backscatter intensity changes in the sidescan sonar mosaics, surficial geologic interpretations, bottom photographs and sediment samples. The polygon editing was done at a general zoom scale of 1:12,000.
Process_Date: 20140315
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Elizabeth Pendleton
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2259
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: ependleton@usgs.gov
Process_Step:
Process_Description:
After all the traced features were mapped, a new field was created 'Physio', and the sea floor was characterized for each polygon based on physiographic zones descriptions of Kelley and others (1996).
Process_Date: 20140405
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Elizabeth Pendleton
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2259
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: ependleton@usgs.gov
Process_Step:
Process_Description:
Finally, new topology rules were established for the feature dataset within the geodatabase. This was done to make sure that there were no overlapping polygons or unintentional gaps between adjacent polygons. The topology error inspector (ArcMap version 10.2) was used to find topology errors and fix them. All overlapping polygon errors were fixed, and several gaps were marked as exceptions since there are several islands and some data gaps within the study area. The data were then exported to a shapefile and the polygons were reprojected from UTM Zone 19N, WGS84 to GCS WGS84.
Process_Date: 20140602
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Elizabeth A. Pendleton
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S.Geological Survey
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02540
Country: USA
Contact_Voice_Telephone: (508)-548-8700 x2259
Contact_Facsimile_Telephone: (508)-457-2310
Contact_Electronic_Mail_Address: ependleton@usgs.gov
Process_Step:
Process_Description:
Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Attempted to modify http to https where appropriate. Fixed a link in the distribution section. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.
Process_Date: 20171004
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 Road
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: USGS Thesaurus keywords added to the keyword section.
Process_Date: 20180720
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 Road
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:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200908
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 Road
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
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: 210
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_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Nahant_NH_Pzones
Entity_Type_Definition:
Physiographic zones shapefile for Nahant to Salisbury, Massachusetts
Entity_Type_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Physio
Attribute_Definition:
Based on geologic maps produced for the Western Gulf of Maine (Kelley and others, 1989), the seafloor within the study area can be divided into geologic environments, or physiographic zones, which are delineated based on Seafloor morphology and the dominant texture of surficial material.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Rocky Zone
Enumerated_Domain_Value_Definition:
Rocky Zones (RZ) are rugged areas of extreme bathymetric relief ranging from nearly vertical rock cliffs to relatively flat, gravel-covered plains littered with boulders up to 4 m in diameter.
Enumerated_Domain_Value_Definition_Source: Kelley and others, 1996; modified by U.S.Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Nearshore Basin
Enumerated_Domain_Value_Definition:
Nearshore Basins (NB) are areas of shallow, low-relief seafloor adjacent to the mainland and separated from offshore areas by islands and shoals.
Enumerated_Domain_Value_Definition_Source: Kelley and others, 1996; modified by U.S.Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Nearshore Ramp
Enumerated_Domain_Value_Definition:
Nearshore Ramps (NR) are areas of gently-sloping seafloor with generally shore-parallel bathymetric contours. This zone is primarily covered with sand-rich sediment, although small exposures of ledge, cobbles and boulders locally crop out on the seafloor.
Enumerated_Domain_Value_Definition_Source: Kelley and others, 1996; modified by U.S.Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Shelf Valley
Enumerated_Domain_Value_Definition:
Shelf Valleys (SV) are elongate depressions that extend offshore more or less perpendicular to the trend of the coastline, and slope gently seaward.
Enumerated_Domain_Value_Definition_Source: Kelley and others, 1996; modified by U.S.Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Outer Basin
Enumerated_Domain_Value_Definition:
Outer Basins are generally found in water depths greater than 40 meters, and are finer grained, but may contain occasional rock outcrops.
Enumerated_Domain_Value_Definition_Source: Kelley and others, 1996; modified by U.S.Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Hard-bottom Plains
Enumerated_Domain_Value_Definition:
Hard-bottom Plains tend to have low bathymetric relief, with a coarse sediment texture consisting of primarily gravel, sand, and rock.
Enumerated_Domain_Value_Definition_Source: Kelley and others, 1996; modified by U.S.Geological Survey
Attribute:
Attribute_Label: Shape_Leng
Attribute_Definition:
Length in meters (UTM, zone 19, WGS84) of each defined polygon automatically calculated when part of a geodatabase.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 359.72
Range_Domain_Maximum: 258190.70928
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 50
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in meters squared.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Elizabeth A Pendleton
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2259
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: ependleton@usgs.gov
Resource_Description:
USGS open file report 2015-1153 Physiographic Zones from Nahant to NH. The zip file contains a shapefile (Nahant_NH_pzones), a browse graphic (pzones_browse.png) and FGDC CSDGM metadata files in four standard formats.
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Version_Number: ArcGIS 10.2
Format_Specification: Esri Polygon Shapefile
Format_Information_Content:
WinZip (v 14.5) file contains qualitatively derived polygons that define physiographic zones from Nahant to Salisbury, MA and the associated metadata
File_Decompression_Technique: WinZip or pkUnzip
Transfer_Size: 0.35
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions: Data can be downloaded via the World Wide Web (WWW)
Fees: None
Technical_Prerequisites:
These data are available in Environmental Systems Research Institute (Esri) Shapefile format. The user must have software capable of importing and processing the data file.
Metadata_Reference_Information:
Metadata_Date: 20210217
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Elizabeth A. Pendleton
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2259
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: ependleton@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2015-1153/Nahant_NH_Pzones.xml.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:20:41 2021