1996. Geological Survey (U.S.). The USGS Central Region Energy Team assessed the oil and gas resources of the United States. Cell maps for each oil and gas production area were cr... U.S. Geological Survey, Central Region Energy Team.
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1973. American Geological Institute, Geological Survey (U.S.), Environmental Systems Research Institute (Redlands, Calif.), National Earthquake Information Center, and National Geophysical Data Center. This datalayer is a point coverage representing earthquake epicenters (1973 through March, 2003). Historical data for this layer were derived from:... American Geological Institute.
2003. American Geological Institute, Geological Survey (U.S.), and Environmental Systems Research Institute (Redlands, Calif.). This datalayer is a polygon coverage showing U.S. Geological Survey defined geologic provinces of the World, excluding the United States. It was pu... American Geological Institute.
2000. American Geological Institute, Geological Survey (U.S.), and Environmental Systems Research Institute (Redlands, Calif.). This shapefile includes arcs and polygons that describe U.S. Geological Survey defined geologic provinces of the World. Each province has a set of ... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing land ice areas (snow fields or ice fields which are on land) worldwide and was published as part ... American Geological Institute.
1998. Causey, J. Douglas. and Geological Survey (U.S.). This datalayer is a point coverage representing mine and mineral resource occurrence data worldwide (most thoroughly within the U.S.) and was publi... U.S. Geological Survey.
1972. American Geological Institute, Geological Survey (U.S.), and Environmental Systems Research Institute (Redlands, Calif.). This datalayer is a point coverage representing metallic and non-metallic mineral resources worldwide. This data was derived from the Mineral Resou... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing worldwide locations where natural resources are being extracted from the earth and locations wher... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide locations where natural resources are being extracted from the earth. It was published as... American Geological Institute.
1999. American Geological Institute, Geological Survey (U.S.), Petroconsultants International Data Corp., and Environmental Systems Research Institute (Redlands, Calif.). This coverage contains points that describe centerpoint locations of and primary commodity produced by oil and gas fields. A fundamental task in th... American Geological Institute.