Sediment-Texture Units of the Sea Floor for Vineyard and western Nantucket Sounds, Massachusetts (polygon shapefile, Geographic, WGS84)

Online link https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2016-1119/VineyardNantucketSound_sedcover.shp.faq.html
Description Geologic, sediment texture, and physiographic zone maps characterize the sea floor of Vineyard and western Nantucket Sounds, 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. [More]
Originators Baldwin, Wayne E.; Foster, David S.; Pendleton, Elizabeth A.; Barnhardt, Walter A.; Schwab, William C.; Andrews, Brian D.; and Ackerman, Seth D.

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Image of the sediment texture and distribution shapefile for Vineyard and western Nantucket Sounds
Image of the sediment texture and distribution shapefile for Vineyard and western Nantucket Sounds