Sediments of Narragansett Bay acquired in 1960 (MCMASTER60 shapefile)

Online link https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2003-001/mcmaster60.shp.faq.html
Description Gravel, sand, silt, and clay contents were determined for samples from Narragansett Bay and the adjacent Rhode Island Shelf. In the Narragansett Bay system, clayey silt and sand-silt-clay are the most abundant sediments. Sand is abundant locally and on the inner shelf. In general, toward the lower passages of the Bay the sediments show a progressive change to coarser textures.
Originators Poppe, Lawrence J.; Paskevich, Valerie F.; Williams, S. Jeffress; Hastings, Mary E.; Kelley, John T.; Belknap, D. F.; Ward, Larry G.; Fitzgerald, D. M.; and Larsen, Peter F.

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Thumbnail image showing extent and distribution of data layer coverage.
Thumbnail image showing extent and distribution of data layer coverage.