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1982, 1983, 1984, 1985, 1986, 1987, 1988, and 1989. Geological Survey (U.S.). This polygon shapefile contains sediment grain size distributions for the east coast continental margin of the United States Atlantic coast, Sedime... Coastal and Marine Geology Program (Geological Survey). Woods Hole Field Center.
2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Canada Centre for Mapping, and Geological Survey (U.S.). This polygon shapefile contains bathymetric data with depth in metres for ocean areas covered by the extent of the North American Atlas project. Is... Canada Centre for Mapping, Instituto Nacional de Estadística, Geografía e Informática (Mexico), and Geological Survey (U.S.).
2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Geological Survey (U.S.), and Canada Centre for Remote Sensing. This polygon shapefile shows the approximate extent of marine areas in the Arctic covered by permanent polar ice. The data originated from the Cana... Geological Survey (U.S.).