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Page 5457, results 136401 - 136425

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Results of aquifer testing in the Belcourt area, Rolette County, North Dakota
P.G. Randich, G.E. Ghering
1975, Open-File Report 75-396
The city of Belcourt, Agency headquarters for the Turtle Mountain Indian Reservation, is located in northeastern Rolette County, north-central North Dakota.  At the request of the U.S. Public Health Service, the U.S. Geological Survey conducted a study in the vicinity of Belcourt to assist in location of a suitable water...
Map showing fluorspar deposits in Colorado
Bruce T. Brady (compiler)
1975, Mineral Investigations Resource Map 70
Increased fluorine consumption (U.S. Bureau of Mines, 1946-1971) coupled with limited proved reserves has stimulated extensive exploration for fluorine and intensive research into developing new sources of fluorine or substitutes. A summary of the distribution, geochemical and geologic environments, and production history of selected fluorspar occurrences, deposits, and districts is provided here with the hope that this information...
In search of a statistical probability model for petroleum-resource assessment : a critique of the probabilistic significance of certain concepts and methods used in petroleum-resource assessment : to that end, a probabilistic model is sketched
Bernardo F. Grossling
1975, Circular 724
Exploratory drilling is still in incipient or youthful stages in those areas of the world where the bulk of the potential petroleum resources is yet to be discovered. Methods of assessing resources from projections based on historical production and reserve data are limited to mature areas. For most of the...
Bibliography of United States Geological Survey reports on the geology and water resources of Texas, 1887-1974
1975, Water-Resources Investigations Report 75-20
Water-resources investigations in Texas consist of the collection of basic records through the hydrologic-data network, interpretive studies, and research projects. An office was established in Austin, Texas, in 1915 for surface-water studies, for ground-water studies in 1929, and water-quality studies in 1937. Previous investigations of the water resources of Texas...
The potentiometric surface and water quality of the Floridan aquifer; in southwest Hillsborough County, Florida, 1952-74
A. Dan Duerr
1975, Water-Resources Investigations Report 75-50
Large ground-water withdrawals and a 10-year period of below-normal rainfall have caused the potentiometric surface of the Floridan aquifer to decline more than 10 feet (3 metres) in most of a 200-square-mile (520-square-kilometre) area of southwest Hillsborough County (fig. 1). The lowered ground-water levels and the consequent threat of salt-water...
Land-surface subsidence at Seabrook, Texas
R.K. Gabrysch, C.W. Bonnet
1975, Water-Resources Investigations Report 76-31
Removal of water, oil, and gas from the subsurface in Harris and Galveston Counties, Texas, has caused a decline in fluid pressures, which is turn had resulted in subsidence of the land surface. Subsidence of the land surface at Seabrook is due principally to the removal of water. Significnt subsidence...