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Maps

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.

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Geologic Maps

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Filter Total Items: 9493

Geologic map of bastnaesite deposits, Birthday claims, San Bernardino County, California

In April 1949 a deposit containing considerable quantities of the rare mineral bastnaesite - the fluorocarbonate of cerium, lanthanum, and other rare earths - was discovered near Mountain Pass, San Bernardino County, Calif.  Small quantities of bastnaesite have been found in several places in the United States, but this area is the first that offers promise of being a commercial source of cerium,

Geologic map of the Barnes Hill talc prospect, Waterbury, Vermont

The Barnes Hill talc prospect is in northeastern Waterbury township, Washington County, Vermont, about 2.2 miles N. 35° E. of the road triangle at Waterbury Center.  The deposit occurs in a body of ultramafic rock that crops out between the altitudes of 1,150 and 1,190 feet above sea level, near the crest of a broad, low ridge on a gently rolling upland of low relief.  The area surveyed is about 4

Geologic map of the Henry Mountains region, Utah

No abstract available.

Geologic structure map of the Beetown lead-zinc area, Grant County, Wisconsin

The Beetown area, in Grant County, Wisconsin, in the northwestern part of the Upper Mississippi Valley zinc-lead district, lies in the western part of T. 4 N., R. 4 W., and the eastern part of T. 4 N., R. 5 W. The village of Beetown is at about its center. Recent geologic investigations in the area by the U.S. Geological Survey, in cooperation with the Wisconsin Geological and Natural History Surv

Magnetite deposits and magnetic anomalies of the Brandy Brook and Silver Pond belts, St. Lawrence County, New York

This report sets forth the geology and economic possibilities of the Brandy Brook and Silver Pond belts of magnetic anomalies, Cranberry Lake quadrangle, St. Lawrence County, northwestern New York.  each belt contains a known magnetite deposit, partly explored through diamond drilling by the U.S. Bureau of Mines.  The Brandy Brook Northwest deposit is a body of low-grade to medium-grade ore, possi

Manganese, iron, and barite deposits of the James River-Roanoke River district, Virginia

During the period 1940-1942 the United States Geological Survey made a geologic study of the manganese deposits of the James River-Roanoke River district, in the general vicinity of Lynchburg, Va. (fig. 1), as part of its program of strategic minerals investigations.  This work was done by the writer and supervised by D. F. Hewett.  John Rodgers and W. R. Wagner assisted during part of the project