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.
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1997. United States. National Imagery and Mapping Agency. This datalayer is a polyline coverage representing railroads worldwide and was published as part of the USGS Global GIS : global coverage database.... American Geological Institute.
103. Global GIS : Roads
1997. United States. National Imagery and Mapping Agency. This datalayer is a polyline coverage representing major roads and trails worldwide and was published as part of the USGS Global GIS : global cover... American Geological Institute.
Geological Survey (U.S.), National Geophysical Data Center, and National Earthquake Information Center. This shapefile includes points which represent locations of significant historical earthquakes worldwide documented from 2150 B.C. until 1994 A.D. ... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a polyline coverage representing smaller rivers and streams worldwide and was published as part of the USGS Global GIS : global c... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing the locations of springs/water holes/wells, dams/weirs, river rapids, and waterfalls worldwide and ... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide storage point features and was published as part of the USGS Global GIS : global coverage... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a polyline coverage representing various utility line features (including pipelines, power transmission lines and communication l... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide utility point features and was published as part of the USGS Global GIS : global coverage... American Geological Institute.
2003. Smithsonian Institution. Global Volcanism Program, American Geological Institute, Geological Survey (U.S.), and Environmental Systems Research Institute (Redlands, Calif.). This datalayer is point coverage containing basic geographic and geologic information for worldwide volcanoes thought to have been active in the la... American Geological Institute.