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Page 5424, results 135576 - 135600

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Map of coal-mining features, Allegheny County, Pennsylvania
W.E. Davies, J. S. Pomeroy, W. R. Kohl
1976, Miscellaneous Field Studies Map 685-C
This map is one result of a series of studies sponsored by the Appalachian Regional Commission as part of a larger U.S. Geological Survey program of environmental analysis of a part of southwestern Pennsylvania. The map summarizes surface features resulting from coal mining. The distribution of surface features is largely...
Geochemical maps showing the distribution and abundance of arsenic and mercury in the Tanacross Quadrangle, Alaska
G.C. Curtin, R. M. O’Leary, R.B. Carten
1976, Miscellaneous Field Studies Map 767-J
This series of geochemical maps shows the distribution of arsenic and mercury in the minus-80-mesh stream sediment and of arsenic in the ash of streambank sod (mixed organic and inorganic material) collected beneath the water level. The geochemical data are plotted on a base map that shows generalized geology and...
Map showing drainage areas, Hartford South quadrangle, Connecticut
Mendall P. Thomas
1976, Miscellaneous Field Studies Map 487-E
Map shows stream systems and drainage areas that contribute streamflow to selected sites on streams.Drainage areas shown have not been adjusted for the manmade changes in the natural regimens such as storm sewers, diversion dams, canals, and tunnels....