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Coal beds of the Troublesome quadrangle, Breathitt, Knott, and Perry Counties, Kentucky Coal beds of the Troublesome quadrangle, Breathitt, Knott, and Perry Counties, Kentucky
The coal beds of the Troublesome quadrangle, Kentucky, have been studied as part of a general investigation of the coal resources of eastern Kentucky by the U.S. Geological Survey. The area covered by two maps already published is shown on the index map (fig. 7).
Geologic map of Lake Valley manganese district, Sierra County, New Mexico Geologic map of Lake Valley manganese district, Sierra County, New Mexico
The Lake Valley district was originally developed as a manganese-silver district, but the known silver-bearing ore bodies have long since been worked out. The critical shortage of manganese during World War II renewed interest in the manganese deposits; from October 1941 through June 1942 the U. S. Geological Survey and the U.S. Bureau of Mines conducted a cooperative exploration program...
Geology of anthracite in the western part of the Ashland quadrangle, Pennsylvania Geology of anthracite in the western part of the Ashland quadrangle, Pennsylvania
The Western Middle anthracite field is one of four structural basins containing anthracite in eastern Pennsylvania. This report describes the geology of the part of the Western Middle field that lies in the western half of the Ashland quadrangle. (See index map, sheet 2.) The mapped area covers about 19 square miles in Columbia and Schuylkill Counties. The town of Centralia is in the...
Geology of the Badwater area, central Wyoming Geology of the Badwater area, central Wyoming
No abstract available.