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Geological reconnaissance of some Uruguayan iron and manganese deposits in 1962
Roberts Manning Wallace
1976, Open-File Report 76-466
The Valentines iron deposit, Florida, Uruguay This report is the result of a request by the Uruguayan Government for technical assistance in the field of geology by the U.S. Geological Survey under the auspices of the U.S. Agency for International Development and the Corps of Engineers, United States Army. Geological reconnaissance...
Crossbedding of the Potomac Formation in Fairfax County, Virginia
Gordon Whitney Weir
1976, Open-File Report 76-193
Crossbedding in sandstone units is the most conspicuous sedimentary structure of the Potomac Formation in Fairfax County, Virginia. Most sets of crossbeds are a few feet thick and several feet wide and tens of feet long. Trough sets are dominant, but planar sets are also common. Dip directions of crossbeds...
Ground-water hydrology of the Cocoa well-field area, Orange County, Florida
C. H. Tibbals, J.M. Frazee
1976, Open-File Report 75-676
The city of Cocoa, Brevard County, Florida, supplies water for much of central Brevard County including Cape Kennedy and Patrick Air Force Base. The water supply is obtained from a well field in east Orange County. Many of the easternmost wells in that well field yield salty water (chloride concentration...
Geochemical maps showing the distribution and abundance of tin in the Tanacross Quadrangle, Alaska
G.C. Curtin, G.W. Day, S.P. Marsh, R. M. O’Leary, R. B. Tripp
1976, Miscellaneous Field Studies Map 767-K
This series of geochemical maps shows the distribution of tin in three sample media: (A) the oxide residue (the oxalic-acid-leachable fraction) of the stream sediment, (B) the minus-80-mesh stream sediment, and (C) the ash of aquatic bryophytes (mosses). The geochemical data are plotted on a base map that shows generalized geology...
Analyses of water, core material, and elutriate samples collected near New Orleans, Louisiana (Lake Pontchartrain, Louisiana, and vicinity hurricane protection project)
Harold L. Leone
1976, Open-File Report 76-758
When a hurricane approaches the New Orleans, Louisiana area, the accompanying tides and heavy rainfall increase the level of water in Lake Borgne, Mississippi Sound, and Lake Pontchartrain and pose a major threat of water damage to the populated areas. During Hurricane Betsy (1965), for example, the level of Lake...