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USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. They also organize, maintain, and publish the geospatial baseline of the Nation's topography, natural landscape, built environment and more.
Geologic Maps
Geologic Maps
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Map Releases
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Topo Maps
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Map showing free-air gravity anomalies off the western coast of Africa Senegal (south of 15° north latitude) to Sierra Leone Map showing free-air gravity anomalies off the western coast of Africa Senegal (south of 15° north latitude) to Sierra Leone
This map is one of six in a series presenting marine gravity data off the western coast of Africa (fig. 1). The data, collected by the U.S. Geological Survey (USGS) in 1987 in response to a request from the Defense Mapping Agency, are intended to improve gravity coverage where it has been insufficient or inadequate. The information shown on this and the other three maps that cover the...
Map showing the distribution of molybdenum in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah Map showing the distribution of molybdenum in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah
This map of the Richfield 1° x 2° quadrangle, Utah, shows the regional distribution of lead in the less-than-0.180-mm (minus-80-mesh) fraction of stream sediments. It is part of a folio of maps of the Richfield 1° x 2° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other published geochemical maps in this folio are listed in the references...
Map showing the distribution of molybdenum in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah Map showing the distribution of molybdenum in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah
This map of the Richfield 1° x 2° quadrangle, Utah, shows the regional distribution of molybdenum in the less-than-0.180-mm (minus-80-mesh) fraction of stream-sediments. It is part of a folio of maps of the Richfield 1° x 2° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other published geochemical maps in this folio are listed in the...
Map showing the distribution of silver in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah Map showing the distribution of silver in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah
This map of the Richfield 1° x 2° quadrangle, Utah, shows the regional distribution of silver in the less-than-0.180-mm (minus-80-mesh) fraction of stream-sediments. It is part of a folio of maps of the Richfield 1° x 2° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other published geochemical maps in this folio are listed in the references...
Map showing the distribution of thorium in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah Map showing the distribution of thorium in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah
This map of the Richfield 1° x 2° quadrangle, Utah, shows the regional distribution of thorium in the less-than-0.180-mm (minus-80-mesh) fraction of stream-sediments. It is part of a folio of maps of the Richfield 1° x 2° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other published geochemical maps in this folio are listed in the references...
Map showing the distribution of tin in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah Map showing the distribution of tin in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah
This map of the Richfield 1° x 2° quadrangle, Utah, shows the regional distribution of tin in the less-than-0.180-mm (minus-80-mesh) fraction of stream-sediments. It is part of a folio of maps of the Richfield 1° x 2° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other published geochemical maps in this folio are listed in the references...
Map showing the distribution of uranium in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah Map showing the distribution of uranium in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah
This map of the Richfield 1° x 2° quadrangle, Utah, shows the regional distribution of uranium in the less-than-0.180-mm (minus-80-mesh) fraction of stream-sediments. It is part of a folio of maps of the Richfield 1° x 2° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other published geochemical maps in this folio are listed in the references...
Map showing the distribution of zinc in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah Map showing the distribution of zinc in stream-sediment samples, Richfield 1° x 2° quadrangle, Utah
This map of the Richfield 1° x 2° quadrangle, Utah, shows the regional distribution of zinc in the less-than-0.180-mm (minus-80-mesh) fraction of stream-sediments. It is part of a folio of maps of the Richfield 1° x 2° quadrangle, Utah, prepared under the Conterminuous United States Mineral Assessment Program. Other published geochemical maps in this folio are listed in the references...