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2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Canada Centre for Mapping, and Geological Survey (U.S.). This line shapefile shows bathymetric contours with depth in metres for ocean areas covered by the extent of the North American Atlas project. Isob... Canada Centre for Mapping, Instituto Nacional de Estadística, Geografía e Informática (Mexico), and Geological Survey (U.S.).
2005. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This line shapefile shows the outlines of major calderas and impact structures in the United States. A caldera is a large, generally circular depre... Geological Survey (U.S.) and National Atlas of the United States.
2012. Ritchie, Andrew C., Johnson, Samuel Y., Clahan, Kevin B., Pacific Coastal and Marine Science Center, and Golden, Nadine E. This line shapefile represents paleoshorelines for the geologic and geomorphic map (see sheet 10, SIM 3225) of the Hueneme Canyon and surrounding v... Geological Survey (U.S.).
2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Geological Survey (U.S.), and Canada Centre for Remote Sensing. This line shapefile depicts the political boundaries of North America, including: international boundaries, provincial boundaries, state or territo... Geological Survey (U.S.).
2005. Geological Survey (U.S.). This line shapefile represents railroads in the conterminous United States and Alaska at 1:2,000,000. This is a replacement for the December 1998 m... Geological Survey (U.S.).
2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Geological Survey (U.S.), and Canada Centre for Remote Sensing. This line shapefile represents roads in North America at 1:1,000,000 scale. The roads included in this layer are either those that connect major ce... Geological Survey (U.S.).
2006. World Wildlife Fund. This river network (stream lines) map for South America is derived from the flow direction map for South America. The flow accumulation map for Sou... Geological Survey (U.S.).
2006. World Wildlife Fund. This river network (stream lines) map for South America is derived from the flow direction map for South America. The flow accumulation map for Sou... Geological Survey (U.S.).
2012. Ritchie, Andrew C., Clahan, Kevin B., Johnson, Samuel Y., Pacific Coastal and Marine Science Center, and Golden, Nadine E. This line shapefile represents submarine landslide scarps of the geologic/geomorphic map of the Hueneme Canyon and surrounding vicinity in Californ... Geological Survey (U.S.).
2007, 2008, 2009, and 2010. Chin, John L., Johnson, Samuel Y., Ross, Stephanie L., Sliter, Ray W., and Golden, Nadine E. This line shapefile contains transgressive contours at 5 and 10 meter intervals for the areas within the 3-nautical mile limit between Bolinas and ... Geological Survey (U.S.).