2000. Lee M. Osmonson, USGS, Denver, CO (comp.).
This shapefile includes arcs and polygons that describe U.S. Geological
Survey defined geologic provinces of the World. Each province has a set o... U.S. Geological Survey.
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2000. Lee M. Osmonson, USGS, Denver, CO (comp.), Feliks M. Persits, Contractor to USGS, Denver, CO (comp.), Douglas W. Steinshouer, Contractor to USGS, Denver, CO, and Timothy R. Klett, USGS, Denver, CO (comp.) and others. Geologic Provinces is a polygon theme representing U.S. Geological Survey defined geologic provinces of the World. Each province has a set of geol... U.S. Geological Survey.
1972. David G. Frank. Ore Deposits is a point theme representing ore deposits throughout the world, locational and attribute information is taken from the 1999 Mineral R... U.S. Geological Survey.