Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2018 Title: Elevation of the late Wisconsinan to early Holocene regressive unconformity (Ur) offshore of western and southern Martha's Vineyard and north of Nantucket, Massachusetts Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9E9EFNE 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/10.5066/P9E9EFNE Online_Linkage: https://www.sciencebase.gov/catalog/item/5bfd604de4b0815414ca39d5 Larger_Work_Citation: Citation_Information: Originator: Elizabeth A. Pendleton Originator: Wayne E. Baldwin Originator: David S. Foster Originator: Seth D. Ackerman Originator: Brian D. Andrews Originator: Laura L. Brothers Originator: William C. Schwab Publication_Date: 2018 Title: Geospatial Data Layers of Shallow Geology, Sea-Floor Texture, and Physiographic Zones from the Inner Continental Shelf of Martha’s Vineyard from Aquinnah to Wasque Point, and Nantucket from Eel Point to Great Point Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9E9EFNE Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Pendleton, E.A., Baldwin, W.E., Foster, D.F., Ackerman, S.D., Andrews, B.D, Brothers, L.L., and Schwab, W.C., 2018, Geospatial data layers of shallow geology, sea-floor texture, and physiographic zones from the inner continental shelf of Martha's Vineyard from Aquinnah to Wasque Point, and Nantucket from Eel Point to Great Point: U.S. Geological Survey data release, https://doi.org/10.5066/P9E9EFNE. Online_Linkage: https://doi.org/10.5066/P9E9EFNE Online_Linkage: https://www.sciencebase.gov/catalog/item/5afee3bfe4b0da30c1bfbd28 Description: Abstract: Geologic, sediment texture, and physiographic zone maps characterize the sea floor south and west of Martha's Vineyard and north of Nantucket, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. The interpretation of the seismic stratigraphy and mapping of glacial and Holocene marine units provided a foundation on which the surficial maps were created. This mapping is a result of a collaborative effort between the U.S. Geological Survey and the Massachusetts Office of Coastal Zone Management to characterize the surface and subsurface geologic framework offshore of Massachusetts. Purpose: This data set contains a grid representing the elevation to the late Wisconsinan to early Holocene regressive unconformity (Ur) offshore of western and southern Martha's Vineyard and north of Nantucket. These data are useful for assessing relations between geologic framework and sea-bed morphology. The late Wisconsinan regressive unconformity (Ur) locally merges with Holocene transgressive unconformity (Ut) and defines the upper surface of glacial deposits. Supplemental_Information: This data release is a companion publication to USGS OFR 2018-1181: Pendleton, E.A., Baldwin, W.E., Ackerman, S.D, Foster, D.S., Andrews, B.D., Schwab, W.C., and Brothers, L.L. 2018, Sea-floor texture and physiographic zones of the inner continental shelf from Aquinnah to Wasque Point, Martha’s Vineyard, and Eel Point to Great Point, Nantucket Island, Massachusetts: U.S. Geological Survey Open-File Report 2018–1181, https://doi.org/10.3133/ofr20181181. The data in the source contributions used for this compilation are from field activities 2007-011-FA (https://cmgds.marine.usgs.gov/fan_info.php?fan=2007-011-FA), 2011-004-FA (https://cmgds.marine.usgs.gov/fan_info.php?fan=2011-004-FA), and 2013-003-FA (https://cmgds.marine.usgs.gov/fan_info.php?fan=2013-003-FA). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20070809 Ending_Date: 20130611 Currentness_Reference: ground condition of the source data used in this interpretation. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.8711 East_Bounding_Coordinate: -70.0310 North_Bounding_Coordinate: 41.3971 South_Bounding_Coordinate: 41.1917 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5bfd604de4b0815414ca39d5 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: geoscientificInformation Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: marine geology Theme_Keyword: unconsolidated deposits Theme_Keyword: sea-floor characteristics Theme_Keyword: Pleistocene Theme_Keyword: Holocene Theme_Keyword: sedimentation Theme_Keyword: geologic contacts Theme_Keyword: geologic structure Theme_Keyword: geospatial datasets Theme_Keyword: scientific interpretation 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: Seismic Interpretation Theme_Keyword: Geologic Framework Theme_Keyword: Regressive Unconformity Theme_Keyword: Wisconsinan Theme_Keyword: Holocene Theme_Keyword: 32-bit GeoTIFF Theme_Keyword: U.S. Geological Survey Open-File Report 2008-1288 Theme_Keyword: U.S. Geological Survey Open-File Report 2012-1006 Theme_Keyword: U.S. Geological Survey Open-File Report 2016-1168 Theme_Keyword: EdgeTech Theme_Keyword: 512i Theme_Keyword: Seismic-reflection Profiles Theme_Keyword: Depth to glacial deposits Place: Place_Keyword_Thesaurus: None Place_Keyword: Vineyard Sound Place_Keyword: Nantucket Sound Place_Keyword: Atlantic Ocean Place_Keyword: Martha's Vineyard Place_Keyword: Nantucket Place_Keyword: Cape Cod Place_Keyword: Aquinnah Place_Keyword: Chilmark Place_Keyword: Squibnocket Point Place_Keyword: Squibnocket Beach Place_Keyword: Gay Head Place_Keyword: South Beach Place_Keyword: Katama Beach Place_Keyword: Wasque point Place_Keyword: Chappaquiddick Island Place_Keyword: Long Point Wildlife Refuge Place_Keyword: Tisbury Place_Keyword: Nomans Land Place_Keyword: Lucy Vincent Beach Place_Keyword: Tisbury Great Pond Beach Place_Keyword: Muskeget Island Place_Keyword: Tuckernuck Island Place_Keyword: Eel Point Place_Keyword: Dionis Beach Place_Keyword: Children's Beach Place_Keyword: Coatue Place_Keyword: Great Point Place_Keyword: Nantucket Harbor Place_Keyword: Wasque Shoal Place_Keyword: Muskeget Channel Place_Keyword: Tuckernuck Bank Place_Keyword: Tuckernuck Shoal Place_Keyword: Shovelful Shoal Place_Keyword: Massachusetts Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: Sea floor 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: Elizabeth A. Pendleton 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 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: ependleton@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/5bfd604de4b0815414ca39d5/?name=MV_ACK_depth2G_browse.png Browse_Graphic_File_Description: Browse image of a grid representing the depth to the late Wisconsinan to early Holocene regressive unconformity (Ur) offshore of western and southern Martha's Vineyard and north of Nantucket. The browse graphic is derived from the companion OFR (Pendleton and others, 2018). Browse_Graphic_File_Type: PNG Native_Data_Set_Environment: Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.1850 Cross_Reference: Citation_Information: Originator: Charles J. O'Hara Originator: Robert N. Oldale Publication_Date: 1980 Title: Maps showing geology and shallow structure of eastern Rhode Island Sound and Vineyard Sound, Massachusetts Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map Issue_Identification: MF-1186 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: 5 sheets Online_Linkage: https://pubs.usgs.gov/mf/1980/mf-1186/ Cross_Reference: Citation_Information: Originator: Charles J. O'Hara Originator: Robert N. Oldale Publication_Date: 1987 Title: Maps showing geology, shallow structure, and bedforms of Nantucket Sound, Massachusetts Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map Issue_Identification: MF-1911 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: 4 sheets Online_Linkage: https://pubs.er.usgs.gov/publication/mf1911 Cross_Reference: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2013 Title: Geologic Mapping of the Massachusetts Sea Floor Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Other_Citation_Details: Geologic mapping of the Massachusetts seafloor is a cooperative effort that was initiated in 2003 by the U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management (CZM). The National Oceanic and Atmospheric Administration (NOAA-NOS) is also an important partner and contributes hydrographic data that are integrated into the maps. The overall goal of this cooperative is to determine the geologic framework of the sea floor inside the 3-mile limit of State waters, using high-resolution geophysical techniques, sediment sampling, and sea-floor photography. Any source data used to generate interpretative maps and data products are cited in detail in the source citation section of this metadata file. Online_Linkage: https://woodshole.er.usgs.gov/project-pages/coastal_mass/ Cross_Reference: Citation_Information: Originator: Wayne E. Baldwin Originator: David S. Foster Originator: Elizabeth A. Pendleton Originator: Walter A. Barnhardt Originator: William C. Schwab Originator: Brian D. Andrews Originator: Seth Ackerman Publication_Date: 2016 Title: Shallow geology, sea-floor texture, and physiographic zones of Vineyard and western Nantucket Sounds, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2016-1119 Publication_Information: Publication_Place: Reston, VA Publisher: US Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20161119 Cross_Reference: Citation_Information: Originator: David S. Foster Originator: Wayne E. Baldwin Originator: Walter A. Barnhardt Originator: William C. Schwab Originator: Seth D. Ackerman Originator: Brian D. Andrews Originator: Elizabeth A. Pendleton Publication_Date: 2015 Title: Shallow geology, sea-floor texture, and physiographic zones of Buzzards Bay, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2014-1220 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20141220 Cross_Reference: Citation_Information: Originator: Elizabeth E. Pendleton Originator: Walter A. Barnhardt Originator: Wayne E. Baldwin Originator: David S. Foster Originator: William C. Schwab Originator: Brian D. Andrews Originator: Seth D Ackerman 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 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://doi.org/10.3133/ofr20151153 Cross_Reference: Citation_Information: Originator: Elizabeth A. Pendleton Originator: Wayne E. Baldwin Originator: Walter A. Barnhardt Originator: Seth D. Ackerman Originator: David S. Foster Originator: Brian D. Andrews Originator: William C. Schwab Publication_Date: 2013 Title: Shallow Geology, Seafloor Texture, and Physiographic Zones of the Inner Continental Shelf from Nahant to Northern Cape Cod Bay, Massachusetts 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/ Data_Quality_Information: Logical_Consistency_Report: Chirp seismic-reflection data collected during USGS Woods Hole Coastal and Marine Science Center field activities 2007-011-FA, 2011-004-FA, and 2013-003-FA were used to interpret the geologic framework offshore of western and southern Martha's Vineyard and north of Nantucket. All seismic reflection data used in this report were interpreted by the same person that conducted the processing steps. All interpretations were conducted in Kingdom Suite software, and hoizon gridding was conducted in ArcGIS. Any differences in collection vessel and system are noted in the source contributions. Completeness_Report: All chirp seismic-reflection data collected within the study area during USGS Woods Hole Coastal and Marine Science Center field activities 2007-011-FA, 2011-004-FA, and 2013-003-FA were used to interpret the subsurface geologic units. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Navigational accuracy of the seismic-reflection data used for this interpretation was assumed to be ± 10 to 20 meters. Refer to seismic trackline metadata in Denny and others (2009), Ackerman and others (2016), and Andrews and others (2014) in the source information for specific seismic data acquisition parameters and accuracy reports. Additional navigational uncertainty in this interpretation arises from subjective digitizing of the seismic reflectors, sampling of the interpreted horizons at 20-m along track intervals prior to export from the seismic interpretation package. Total positional uncertainty is assumed to be within 50 meters. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The nominal vertical resolution of the chirp seismic-reflection systems is 0.5 meter. Additional uncertainty was introduced by converting depths measured in two-way travel time to meters using a constant speed of sound of 1500 m/s. The vertical accuracy also depends on the accuracy of the composite bathymetric grid. This structural surface was computed by subtracting the isopach of Holocene fluvial, estuarine (Qfe) and nearshore marine (Qmn)sediments from the composite bathymetric surface (Andrews and others, 2018) referenced to NAVD 88. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Denny, J.F. Originator: Danforth, W.W. Originator: Foster, D.S. Originator: Sherwood, C.R. Publication_Date: 2009 Title: Geophysical data collected off the south shore of Martha's Vineyard, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2008-1288 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: The SEG-Y data that was used to interpret geologic units with The KINGDOM Software 2d/3dPAK (ver. 8.8 - 64-bit) can be obtain by contacting the author of the Open-File Report. Online_Linkage: https://pubs.usgs.gov/of/2008/1288/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20070809 Ending_Date: 20070813 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Denny and others, 2009 Source_Contribution: This report provided source geophysical data (sidescan-sonar, bathymetry, and seismic-reflection profiles) for the area south of Martha's Vineyard surrounding the Martha's Vineyard Coastal Observatory. The 2007 mapping was conducted on the M/V Megan T. Miller. High-resolution chirp seismic-reflection profiles were collected during U.S. Geological Survey field activity 2007-011-FA using an EdgeTech Geo-Star full spectrum sub-bottom (FSSB) system and SB-0512i towfish. Thorough descriptions of acquisition and processing parameters for the survey are provided by Denny and others (2009) in the report and seismic-reflection metadata. Shallow geologic framework and surficial geology were interpreted from post-processed chirp seismic-reflection profiles. Source_Information: Source_Citation: Citation_Information: Originator: Andrews, B.D. Originator: Ackerman, S.D. Originator: Baldwin, W.E. Originator: Foster, D.S. Originator: Schwab, W.C. Publication_Date: 2014 Title: High-Resolution Geophysical Data from the Inner Continental Shelf: Vineyard Sound, Massachusetts Edition: 2.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2012-1006 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: The SEG-Y data that was used to interpret geologic units with The KINGDOM Software 2d/3dPAK (ver. 8.8 - 64-bit) can be obtain by contacting the author of the Open-File Report. Online_Linkage: https://pubs.usgs.gov/of/2012/1006/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20110507 Ending_Date: 20110517 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Andrews and others, 2014 Source_Contribution: This report provided source geophysical data (sidescan-sonar, bathymetry, and seismic-reflection profiles) for the study area on the western side of Martha's Vineyard. The 2011 mapping was conducted on the Scarlett Isabella during U.S. Geological Survey field activity 2011-004-FA. Chirp seismic-reflection data were collected using an EdgeTech Geo-Star FSSB subbottom profiling system and an SB-0512i towfish. Thorough descriptions of acquisition and processing parameters for each survey are provided by Andrews and others (2014) in the methods section and seismic-reflection metadata. Shallow geologic framework was interpreted from post-processed chirp seismic-reflection profiles. Only the data collected along the western shore of Martha’s Vineyard was used for this dataset. Source_Information: Source_Citation: Citation_Information: Originator: Ackerman, S.D. Originator: Brothers L.L. Originator: Foster, D.S. Originator: Andrews B.D. Originator: Baldwin W.E. Originator: Schwab W.C. Publication_Date: 2016 Title: High-Resolution Geophysical Data From the Inner Continental Shelf: South of Martha's Vineyard and North of Nantucket, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2016-1168 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: The SEG-Y data that was used to interpret geologic units with The KINGDOM Software 2d/3dPAK (ver. 8.8 - 64-bit) can be obtain by contacting the author of the Open-File Report. Online_Linkage: https://pubs.usgs.gov/of/2016/1168/ Online_Linkage: https://doi.org/10.3133/ofr20161168 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20130522 Ending_Date: 20130611 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Ackerman and others, 2016 Source_Contribution: This report provided source geophysical data (sidescan-sonar, bathymetry, and seismic-reflection profiles) for the majority of this study including offshore of southern Martha's Vineyard and north of Nantucket. These areas were surveyed with the R/V Scarlett Isabella 2013 during U.S. Geological Survey field activity 2013-003-FA. Seismic-reflection data were collected using an EdgeTech Geo-Star FSSB subbottom profiling system and an SB-0512i towfish. Thorough descriptions of acquisition and processing parameters for each survey are provided by Ackerman and others (2016) in the methods section and seismic-reflection metadata. Shallow geologic framework and surficial geology were interpreted from post-processed chirp seismic-reflection profiles. Source_Information: Source_Citation: Citation_Information: Originator: Brian Andrews Originator: Wayne Baldwin Originator: Daniel Sampson Originator: William Schwab Publication_Date: 2018 Title: Continuous Bathymetry and Elevation Models of the Massachusetts Coastal Zone and Continental Shelf Edition: 1.0 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F72806T7 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/f72806t7 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20110507 Ending_Date: 20130611 Source_Currentness_Reference: ground condition of source data used for the compilation. Source_Citation_Abbreviation: Andrews and others, 2018 Source_Contribution: This report provided the composite bathymetry for the study area including offshore of southern Martha's Vineyard and north of Nantucket. Thorough descriptions of the merging and processing parameters are provided by Andrews and others (2018) in the metadata. Process_Step: Process_Description: The isopach grid of post glacial sediments (MV_ACK_postGisopach.tif) was subtracted from the regional composite bathymetry DEM (Andrews and others, 2018) in ArcMap (10.5) using 'Raster Calculator', producing a DEM of the composite Ut/Ur unconformity relative to NAVD88. The DEM was filtered (Filter) using a low pass filter to smooth the grid, then clipped ('Clip' - data management) to the study area extent. Process_Date: 2017 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: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543 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: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20200807 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: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 541 Column_Count: 1750 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 19 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -69.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 40.0 Ordinate_Resolution: 40.0 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North_American_Datum_1983 Ellipsoid_Name: GRS 1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.2572221010042 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: North American Vertical Datum of 1988 (NAVD88) Depth_Resolution: 0.1 Depth_Distance_Units: meters Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: There are no attributes associated with this 32-bit GeoTIFF. Pixel values represent the elevation of the late Wisconsinan to early Holocene regressive unconformity in meters referenced to the North American Vertical Datum of 1988, and range from -6.0 to -36.9 m. 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: MV_ACK_Depth2G.tif is a GeoTIFF representing the elevation of the late Wisconsinan to early Holocene regressive unconformity (Ur) offshore of western and southern Martha's Vineyard and north of Nantucket, MA. The dataset also includes a browse graphic and the associated CSDGM metadata in XML format. 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: GeoTIFF Format_Version_Number: ArcGIS v. 10.5.1 GeoTIFF Format_Specification: 32-bit GeoTIFF Format_Information_Content: 32-bit Elevation GeoTIFF image format at 40 meter resolution, with world file and the associated metadata. Transfer_Size: 0.6 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5bfd604de4b0815414ca39d5 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5bfd604de4b0815414ca39d5 Network_Resource_Name: https://doi.org/10.5066/P9E9EFNE Access_Instructions: To download the data, it is recommended that you go to the page containing the data and take advantage of the large file handler. The first link is to the page containing the data. The second is a direct link to download all data available from the page as a zip file. And the final link is to the publication landing page. Digital_Form: Digital_Transfer_Information: Format_Name: WCS Format_Information_Content: 32-bit GeoTIFF of elevation of the late Wisconsinan to early Holocene regressive unconformity provided through a WCS (web coverage service). Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalogMaps/mapping/ows/5aff06b4e4b0da30c1bfcdfa?service=wcs&request=getcapabilities&version=1.0.0 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5aff06b4e4b0da30c1bfcdfa Network_Resource_Name: https://doi.org/10.5066/P9E9EFNE Access_Instructions: The first link in the network resources accesses the data through a coverage service, the second is to the page containing the data, and the third link is to the publication landing page. Digital_Form: Digital_Transfer_Information: Format_Name: WMS Format_Information_Content: 32-bit GeoTIFF of elevation of the late Wisconsinan to early Holocene regressive unconformity provided through a WMS (web mapping service). Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalogMaps/mapping/ows/5aff06b4e4b0da30c1bfcdfa?service=wms&request=getcapabilities&version=1.3.0 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5aff06b4e4b0da30c1bfcdfa Network_Resource_Name: https://doi.org/10.5066/P9E9EFNE Access_Instructions: The first link in the network resources accesses the data through a mapping service, the second is to the page containing the data, and the third link is to the publication landing page. Fees: None Technical_Prerequisites: The imagery file is a 32-bit GeoTIFF image compressed using the LZW compression format with a world file. To utilize these data an image processing or GIS software package capable of importing a 32-bit TIFF image with LZW compression is needed. Standard image viewing software cannot translate a 32-bit image. Metadata_Reference_Information: Metadata_Date: 20200807 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: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543 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