Trackline navigation for EG&G Uniboom seismic-reflection data collected by the U.S. Geological Survey during field activities 1974-004-FA and 1975-003-FA offshore of the Delmarva Peninsula (polyline shapefiles)

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: 20230519
Title:

Trackline navigation for EG&G Uniboom seismic-reflection data collected by the U.S. Geological Survey during field activities 1974-004-FA and 1975-003-FA offshore of the Delmarva Peninsula (polyline shapefiles)

Edition: 1.0
Geospatial_Data_Presentation_Form: Polyline Shapefile
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9GQY0ZN

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/P9GQY0ZN
Online_Linkage:

https://www.sciencebase.gov/catalog/item/6437218cd34ee8d4addcd1fa

Larger_Work_Citation:

Citation_Information:

Originator: David S. Foster
Originator: Laura L. Brothers
Originator: Wayne E. Baldwin
Originator: Elizabeth A. Pendleton
Publication_Date: 2023
Title:

Geospatial data layers of shallow geology from the inner continental shelf of the Delmarva Peninsula, including Maryland and Virginia state waters

Edition: 1.0
Geospatial_Data_Presentation_Form: GeoTIFF, Shapefile
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9GQY0ZN

Publication_Information:

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

Other_Citation_Details:

Suggested citation: Foster, D.S., Brothers, L.L., Baldwin, W.E., and Pendleton, E.A., 2023, Geospatial data layers of shallow geology from the continental shelf of the Delmarva Peninsula, Maryland and Virginia: U.S. Geological Survey data release, https://doi.org/10.5066/P9GQY0ZN.

Online_Linkage: https://doi.org/10.5066/P9GQY0ZN
Online_Linkage:

https://www.sciencebase.gov/catalog/item/64370f69d34ee8d4addcc9b8

Description:

Abstract:

Geologic structure and isopach maps were constructed by interpreting over 19,890 trackline kilometers of co-located multichannel boomer, sparker and chirp seismic reflection profiles from the continental shelf of the Delmarva Peninsula, Maryland and Virginia. In this region, Brothers and others (2020) interpret 12 seismic units and 11 regional unconformities. They interpret the infilled channels as Late Tertiary and Quaternary courses of the Susquehanna, Potomac, Rappahannock, York and James Rivers and tributaries, in addition to a broad drainage system. These regional unconformities form a composite unconformity interpreted as the Quaternary-Tertiary (Q-T) unconformity. A depth to Tertiary (Uqt) and total Quaternary sediment thickness (Q) isopach are included with this data release. Other products in this data release include thickness of an early Pleistocene unit (Qbd), thickness of a Pleistocene highstand system tract (Q2), thickness of a post last glacial maximum (LGM) fluvial/estuarine unit (Qcch), thickness of Holocene to modern marine sediment (Qmn), depth to the base of the Persimmons Point and Ocean City paleochannels (U4), depth to the base of the Exmore and Belle Haven paleochannels (U6), depth to the base of the Eastville paleochannel and tributaries (U8), depth to the base (fluvial unconformity) of the Cape Charles paleochannel and tributary paleochannels (fluvial unconformity, U10) and the base (tidal ravinement) of associated Holocene tidal and back-barrier deposits (tidal ravinement surface, U10.5).

Purpose:

This dataset contains trackline navigation for approximately 944 km of EG&G Uniboom seismic-reflection data collected by the U.S. Geological Survey during field activities 1974-004-FA and 1975-003-FA offshore of the Delmarva Peninsula. This information shows the spatial distribution and spacing of single-channel, seismic-reflection data.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19740515
Ending_Date: 19750515

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -75.622012
East_Bounding_Coordinate: -73.837679
North_Bounding_Coordinate: 38.598022
South_Bounding_Coordinate: 36.762229

Keywords:

Theme:

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

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: seismic reflection methods
Theme_Keyword: sub-bottom profiling
Theme_Keyword: marine geophysics
Theme_Keyword: marine geology
Theme_Keyword: geospatial datasets
Theme_Keyword: navigational data

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: Sea floor
Theme_Keyword: Marine Geology
Theme_Keyword: Interpretation
Theme_Keyword: Seismic Interpretation
Theme_Keyword: Shapefile
Theme_Keyword: Navigation
Theme_Keyword: Seismic-reflection Profiles
Theme_Keyword: 1974-004-FA
Theme_Keyword: 1975-003-FA
Theme_Keyword: National Centers for Environmental Information
Theme_Keyword: NCEI

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:6437218cd34ee8d4addcd1fa

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: United States of America
Place_Keyword: Atlantic Ocean
Place_Keyword: Delmarva Peninsula
Place_Keyword: Maryland
Place_Keyword: Atlantic Margin
Place_Keyword: Delaware
Place_Keyword: Virginia

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.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: David S. Foster
Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist
Contact_Address:

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

Contact_Voice_Telephone: 508-548-8700 x2271
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: dfoster@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.sciencebase.gov/catalog/file/get/6437218cd34ee8d4addcd1fa/?name=USGS_1974-004-FA_1975-003-FA_tracklines_browse.png&allowOpen=true

Browse_Graphic_File_Description:

Browse image of trackline navigation for seismic-reflection data collected by the U.S. Geological Survey during field activities 1974-004-FA (yellow lines) and 1975-003-FA (green lines) offshore of the Delmarva Peninsula.

Browse_Graphic_File_Type: PNG

Data_Set_Credit: Please recognize the U.S. Geological Survey
Native_Data_Set_Environment: Microsoft Windows 10 Enterprise; Global Mapper v21.0
Cross_Reference:

Citation_Information:

Originator: Laura L. Brothers
Originator: David S. Foster
Originator: Elizabeth A. Pendleton
Originator: Wayne E. Baldwin
Publication_Date: 2020
Title:

Seismic Stratigraphic Framework of the Continental Shelf Offshore Delmarva, U.S.A.: Implications for Mid-Atlantic Bight Evolution since the Pliocene

Series_Information:

Series_Name: Marine Geology
Issue_Identification: Volume 428, October 2020

Other_Citation_Details:

Use this citation to refer to the seismic stratigraphic units and unconformities represented in the structure surfaces and sediment thickness maps presented in this data release.

Online_Linkage: https://doi.org/10.1016/j.margeo.2020.106287

Data_Quality_Information:

Logical_Consistency_Report:

A select portion of USGS seismic-reflection profiles from field activities 1974-004-FA and 1975-003-FA were used to interpret the subsurface geologic units. All seismic reflection data used in this data release were interpreted by Laura L. Brothers and David S. Foster. David S. Foster conducted the processing steps. Unless stated otherwise, all interpretations, two-way travel time conversions to depth, and horizon gridding were conducted in Kingdom Suite 2017 software.

Completeness_Report:

A select portion of USGS seismic-reflection profiles from field activities 1974-004-FA (Julian days 135, 136, 148, and 149) and 1975-003-FA (Julian days 132 to 135) were used to interpret the subsurface geologic units.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The scanned TIFF images of Uniboom seismic-reflection profiles from USGS field activities 1974-004-FA and 1975-003-FA had a resolution of 300 dpi. The TIFF images were downsampled, before converting to SEG-Y format, to reflect a shot rate of 0.5 seconds. This resulted in one-pixel length in the X dimension per SEG-Y trace. Navigation was with Loran-C, which has an accuracy of 0.1 to 0.25 nautical miles. Navigation fix points were at 10-minute intervals for 1974-004-FA and 5 minute intervals for 1975-003-FA, or at a ship speed of 5 knots, 772 meter and 1543 meter intervals. The datum of WGS 1972 for geographic coordinate pairs were transformed to WGS 84.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

There are no vertical attributes for the seismic navigation data.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

National Oceanic and Atmospheric Administration (NOAA), National Centers for Environmental Information (NCEI)

Publication_Date: 19820805
Title: Trackline Geophysical Data
Geospatial_Data_Presentation_Form: MGD77T
Publication_Information:

Publication_Place: Boulder, Colorado
Publisher: National Centers for Environmental Information (NCEI)

Other_Citation_Details:

The trackline navigation data that were used to georefrence SEG-Y files and interpret geologic units with Kingdom Suite Software 2d/3dPAK (ver. 2017 - 64-bit) can be requested online National Centers for Environmental Information.

Online_Linkage:

https://www.ngdc.noaa.gov/trackline/request/?surveyTypes=Single-Channel%20Seismics&surveyIds=A2089L02

Type_of_Source_Media: Online
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19750512
Ending_Date: 19750515

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: NCEI (1982)
Source_Contribution:

These data were used to extend seismic stratigraphic interpretations beyond the extents of USGS field activities 2014-002-FA and 2015-001-FA and Coastal Planning & Engineering (2014). Shallow geologic framework and surficial geology were interpreted from EG&G Uniboom seismic-reflection profiles.

Source_Information:

Source_Citation:

Citation_Information:

Originator:

U.S. Geological Survey, Woods Hole Coastal and Marine Science Center, Data Library

Publication_Date: 1974
Title:

Loran C navigation paper printout for field activity 1974-004-FA

Geospatial_Data_Presentation_Form:

Paper printout with 10-minute fixes of geographic coordinate pairs in degrees and decimal minutes.

Publication_Information:

Publication_Place: Woods Hole, MA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Copies of navigation data can be requested from the U.S. Geological Survey, Woods Hole Coastal and Marine Science Center, Data Library.

Online_Linkage: https://cmgds.marine.usgs.gov/fan_info.php?fan=1974-004-FA
Online_Linkage:

https://woodshole.er.usgs.gov/operations/ia/data-library/assets.php?media=XX&fa=74004

Type_of_Source_Media: Paper printout
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19740515
Ending_Date: 19740529

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: USGS (1974)
Source_Contribution:

Process_Step:

Process_Description:

A scanned image of the Loran C navigation data table printouts for 1974-004-FA were obtained from the U.S. Geological Survey, Woods Hole Coastal and Marine Science Center, Data Library.
Loran C navigation for 1975-003-FA were downloaded using the National Centers for Environmental Information, Trackline Geophysical Data Viewer in M77T format.
The contact person for this and all subsequent processing steps below is David S. Foster.

Source_Used_Citation_Abbreviation:

USGS (1974) NCEI (1982)

Process_Date: 2018
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: David S Foster
Contact_Organization: U.S. Geological Survey, Northeast Region

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA

Contact_Voice_Telephone: 508-4548-8700 x2271
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: dfoster@usgs.gov

Process_Step:

Process_Description:

The 1974-004-FA columns (fields) included Date, Time of Day, Latitude Degrees, Latitude Decimal Minutes, Longitude Degrees, and Longitude Decimal Minutes were manually entered into a Microsoft Excel spreadsheet. New latitude and longitude fields for decimal degrees were calculated. The spreadsheet was saved as a CSV file.
The 1975-003-FA M77T format file was opened with Microsoft Excel and the fields Date, Time of Day, Latitude Decimal Degrees, and Longitude Decimal Degrees were saved to a spreadsheet in CSV format.
The following process steps in Excel were the same for 1974-004-FA and 1975-003-FA data:
1) A field named File was added to the spreadsheets. The field name File relates to the name of the SEG-Y files generated from the scanned TIFF images of the seismic data and is in the format YEAR_FIELD ACTIVITY NUMBER_START JULIAN DAY_START TIME OF DAY_END TIME OF DAY (e.g., 1974_004_135_1810_2210).
2) A field Shot was created and a shot number that starts at 1 for each file name was created based on the time of day and the known shot rate of 0.5 seconds for the seismic data (1 minute = 120 shots).
3) New CSV files were saved with the added fields File and Shot.

Process_Date: 2018

Process_Step:

Process_Description:

The CSV files from the previous step were used to create point shapefiles with ArcCatalog 10.7.1, Create Feature Class From XY Table. The coordinate system was identified as Geographic WGS 72.
The ArcGIS Tool, Project, was used to transform the shapefiles coordinate systems from Geographic WGS 72 to UTM Zone 18 North WGS 84 and saved as a point feature class.
XTools Pro, Add XYZ Coordinates added the UTM coordinate pairs.
XTools Pro, Table to File, created CSV files with UTM coordinate pairs, file name, and shot number. These navigation files were used to load SEG-Y files into Kingdom Suite and were also used in the next process step to interpret the data in Kingdom Suite.

Process_Date: 2018

Process_Step:

Process_Description:

1) The CSV files created in the previous step was added as a standalone table to an ArcGIS Pro 2.4.1 project map.
2) Point feature classes were created from these tables using the Geoprocessing Tool, XY Table To Point. The coordinate system was defined as WGS 84 UTM Zone 18 North.
3) Polyline feature classes were created from the point feature classes using the Geoprocessing Tool, Points To Line. The unique features used the attribute File in the Line Field and in the Sort Field.
4) The Geoprocessing Tool Feature Class To Shapefile created polyline shapefiles.
5) The shapefiles names were changed to USGS_1974-004-FA_tracklines.shp and USGS_1975-003-FA_tracklines.shp.
6) Both shapefiles were reprojected to a Geographic coordinates system to WGS 84 using the ArcMap 10.8.1 Project tool. No datum transformation was needed. Providing the data in a geographic coordinates system simplifies the integration of the dataset with other vector datasets.
These are the two shapefiles included with this data release: USGS_1974-004-FA_tracklines.shp and USGS_1975-003-FA_tracklines.shp.

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: String
Point_and_Vector_Object_Count: 66

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.00001
Longitude_Resolution: 0.00001
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: USGS_1974-004-FA_tracklines.shp
Entity_Type_Definition:

Trackline shapefile for USGS field activity 1974-004-FA EG&G Uniboom seismic-reflection data (18 polyline features).

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: Shape type.

Attribute:

Attribute_Label: Shape_Leng
Attribute_Definition: Length of seismic-reflection data line in meters.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1456.88867717
Range_Domain_Maximum: 65576.5153368
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.0000001

Attribute:

Attribute_Label: File
Attribute_Definition:

Name of the trackline along which seismic-reflection data were collected in the format: YEAR_FIELD ACTIVITY NUMBER_JULIAN DAY_START TIME OF DAY_END TIME OF DAY (i.e.'1974_004_135_1810_2210').

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: Character set

Detailed_Description:

Entity_Type:

Entity_Type_Label: USGS_1975-003-FA_tracklines.shp
Entity_Type_Definition:

Trackline shapefile for USGS field activity 1975-003-FA EG&G Uniboom seismic-reflection data (48 polyline features).

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: Shape type

Attribute:

Attribute_Label: Shape_Leng
Attribute_Definition: Length of seismic-reflection data line in meters.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 580.579549
Range_Domain_Maximum: 46567.6114264
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.0000001

Attribute:

Attribute_Label: File
Attribute_Definition:

Name of the trackline along which seismic-reflection data were collected in the format: YEAR_FIELD ACTIVITY NUMBER_JULIAN DAY_START TIME OF DAY_END TIME OF DAY (i.e.'1975_003_132_1535_1540').

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: Character set

Overview_Description:

Entity_and_Attribute_Overview:

The shapefiles USGS_1974-004-FA_tracklines.shp and USGS_1975-003-FA_tracklines.shp shows where data from these surveys contributed to the 32-bit GeoTIFF files in this data release. The vector polylines show the distribution and distance between 2-D seismic-reflection profiles.

Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - ScienceBase

Contact_Address:

Address_Type: mailing address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: United States

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

Resource_Description:

USGS_1974-004-FA_tracklines.shp and USGS_1975-003-FA_tracklines.shp are shapefiles representing the geospatial distribution of EG&G Uniboom seismic-reflection profiles offshore of the Delmarva Peninsula. The dataset also includes a browse graphic file showing the 1974 (yellow) and 1975 (green) tracklines and the associated CSDGM metadata in XML format.

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 Pro 2.4.1
Format_Specification: Shapefile
Format_Information_Content:

Zip file containing the shapefiles of EG&G Uniboom tracklines collected during USGS field activities 1974-004-FA and 1975-003-FA and the associated metadata.

Transfer_Size: 1

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/6437218cd34ee8d4addcd1fa

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/6437218cd34ee8d4addcd1fa

Network_Resource_Name: https://doi.org/10.5066/P9GQY0ZN

Access_Instructions:

The first link is to download all the data in a ZIP file. 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:

To utilize these shapefiles, a GIS software package capable of importing shapefiles is needed.

Metadata_Reference_Information:

Metadata_Date: 20230519
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: David S. Foster
Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist
Contact_Address:

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

Contact_Voice_Telephone: 508-548-8700 x2271
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 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/SB_data_release/DR_P9GQY0ZN/USGS_1974-004-FA_1975-003-FA_tracklines_meta.html>