Chirp seismic-reflection data collected during USGS Woods Hole Coastal and Marine Science Center field activities 2009-002-FA, 2010-003-FA, 2010-004-FA, 2011-004-FA, and 2011-013-FA and boomer seismic-reflection data during USGS Woods Hole Coastal and Marine Science Center field activities 2010-047-FA and 2010-100-FA were used to interpret the geologic framework of Vineyard and western Nantucket Sounds. Because of the scale (polygon editing was done at scales between 1:8,000 and 1:20,000, depending on the size of the outcrop area) and line spacing of the source seismic profiles, not all changes in seafloor geology are captured. The boundaries of polygons are inferred between seismic lines, and polygon boundaries should be considered an approximation of the location of a change in geology. Further, a constant seismic velocity of 1,500 m/s was assumed for all profiles, through water and all sediment types, which may result in inaccurate depths of stratigraphic units.
All chirp and boomer seismic-reflection data collected within the study area during USGS Woods Hole Coastal and Marine Science Center field activities 2009-002-FA, 2010-003-FA, 2010-004-FA, 2010-047-FA, 2010-100-FA, 2011-004-FA, and 2011-013-FA were used to interpret the subsurface geologic units.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Pendleton, E.A.
Originator: Twichell, D.C.
Originator: Foster, D.S.
Originator: Worley, C.R
Originator: Irwin, B.J.
Originator: Danforth, W.W.
Publication_Date: 2012
Title:
High-resolution geophysical data from the sea floor surrounding the Western Elizabeth Islands, Massachusetts
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2011-1184
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2011/1184/
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100909
Ending_Date: 20100918
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Pendleton and others, 2012
Source_Contribution:
This report provided source geophysical data (sidescan, bathymetry, and seismic-reflection profiles) for the area of Vineyard Sound surrounding the western Elizabeth Islands. High-resolution chirp seismic-reflection profiles were collected during U.S. Geological Survey field activity 2010-003-FA using an EdgeTech Geo-Star full spectrum sub-bottom (FSSB) system and SB-424 towfish. Thorough descriptions of acquisition and processing parameters for the survey are provided by Pendleton and others (2012) 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: 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
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2012-1006
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
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: 20090528
Ending_Date: 20110517
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Andrews and others, 2014
Source_Contribution:
This report provided source geophysical data (sidescan, bathymetry, and seismic-reflection profiles) for most of the Vineyard and western Nantucket Sound Study area. The mapping was conducted onboard the Megan T. Miller (2009, 2010) and the Scarlett Isabella (2011) during U.S. Geological Survey field activities 2009-002-FA , 2010-004-FA, and 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
Source_Information:
Source_Citation:
Citation_Information:
Originator: Pendleton, E.A.
Originator: Andrews, B.D.
Originator: Danforth, W.W.
Originator: Foster, D.S.
Publication_Date: 2014
Title:
High-resolution geophysical data collected aboard the U.S. Geological Survey research vessel Rafael to supplement existing datasets from Buzzards Bay and Vineyard Sound, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2013-1020
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2013/1020/
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20071005
Ending_Date: 20110413
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Pendleton and others, 2014
Source_Contribution:
This report provided source geophysical data (sidescan, bathymetry, and seismic-reflection profiles) for several of the shallowest areas of Vineyard and Nantucket Sounds, across Middleground, L'Hommedieu, and Hedge Fence shoals, as well as several supplemental boomer seismic-reflection profiles. These areas were surveyed with the RV Rafael in 2010 and 2011 during U.S. Geological Survey field activities 2010-047-FA, 2010-100-FA, and 2011-013-FA. In 2010, seismic-reflection data were acquired with a boomer source and GeoEel 8-channel streamer. In 2011, high-resolution chirp seismic data were collected using a dual frequency (3.5 and 200 kHz) Knudsen Engineering Limited (KEL) Chirp 3202 system. Thorough descriptions of acquisition and processing parameters for each survey are provided by Pendleton and others (2014) in the methods section and seismic-reflection metadata. Shallow geologic framework and surficial geology were interpreted from post-processed chirp and boomer seismic-reflection profiles.
Process_Step:
Process_Description:
Chirp and boomer seismic-reflection data were interpreted using Landmark SeisWorks 2D (R5000) seismic interpretation software. Interpretation consisted of identifying and digitizing erosional unconformities defining the boundaries between Holocene, Pleistocene, and pre-Quaternary seismic units, and digitizing the extent over which each of the defined sub-surface seismic units crops out on the sea floor. The digitized Sea-floor outcrop extents for each seismic unit were sampled at a 10-meter along track interval and exported from SeisWorks as ASCII text. The resultant text file was imported into ArcMap (9.3.1) as point features (easting, northing, seismic unit) using the 'Add XY data' function, then saved as a point shapefile (UTM, Zone 19N, WGS84).
Source_Used_Citation_Abbreviation:
Seisworks horizons representing the sea-floor outcrop extents of interpreted geologic units
Process_Date: 2015
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
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: wbaldwin@usgs.gov
Process_Step:
Process_Description:
A polygon shapefile of the seismic-reflection survey area was created by digitizing around a polyline shapefile of the profile tracklines (file > new > shapefile in ArcCatalog 9.3.1, then editor >'create new feature' in ArcMap 9.3.1). A new attribute field named 'Geology' was added to the shapefile attribute table. The point shapefile containing the along track extents of seismic unit outcrop was then used to guide division of the larger survey area polygon into smaller polygons representative of individual seismic unit outcrop areas (using editor processes 'cut polygon feature', 'intersect', 'merge', and 'clip' in ArcMap 9.3.1). As each new polygon area was created, the 'Geology' attribute field was populated with the appropriate geologic unit label. Polygon editing was done at scales between 1:8,000 and 1:20,000, depending on the size of the outcrop area.
Source_Used_Citation_Abbreviation:
shapefile of profile tracklines and point shapefile containing the along track extents of seismic unit outcrop
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
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: wbaldwin@usgs.gov
Process_Step:
Process_Description:
Polygon shapefile containing the surficial geologic units was imported as a feature class within a file geodatabase feature dataset, and topological rules were established (ArcCatalog 9.3.1). Topological errors, primarily overlaps and gaps, were identified and remedied using the topology toolbar in ArcMap (9.3.1).
Source_Used_Citation_Abbreviation: Polygon shapefile containing the surficial geologic units
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
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: wbaldwin@usgs.gov
Process_Step:
Process_Description:
The surficial geology polygon feature class was exported back to a shapefile and the 'Shape_Area' and 'Shape_Length' fields were deleted from its attribute table (ArcCatalog and ArcMap 9.3.1). XTools Pro (7.1.0) was then used to add and populate a new attribute field containing polygon area in square kilometers based on UTM, zone 19, WGS84. Finally, the shapefile was reprojected from UTM zone 19 N, WGS 84 to GCS WGS84 using ArcToolbox > Data Management Tools > Projections and Transformations > Feature > Project.
Source_Used_Citation_Abbreviation: Polygon feature class containing the surficial geologic units
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
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: wbaldwin@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: Fixed a broken link and added the DOI link.
Process_Date: 20190130
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
