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Page 6598, results 164926 - 164950

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The operation and maintenance of a crest-stage gaging station
John Friday
1965, Open-File Report 66-45
The purpose of this manual is to familiarize field personnel with the procedures involved in operating crest-stage gaging stations. Crest-stage gages are used to determine the elevation of a peak stage occurring at a specific location in a stream. A crest-stage gage consists of a length of 14-inch diameter pipe installed...
Tectonic and igneous geology of the northern Shoshone Range, Nevada
James Gilluly, Olcott Gates, Donald Plouff, K. B. Ketner
1965, Professional Paper 465
Part of the northern Shoshone Range and its bordering valleys are shown in the Mount Lewis and Crescent Valley quadrangles of the U.S. Geological Survey's Topographic Atlas. A very small part of the Cortez Mountains extends into the Crescent Valley quadrangle and is also described....
A field method for the determination of silver in soils and rocks
H. M. Nakagawa, H. W. Lakin
1965, Open-File Report 65-182
A rapid, sensitive, and specific field method useful in geochemical exploration has been developed for the determination of silver in geologic materials. In this method the sample is digested with nitric acid and the silver is extracted with triisooctyl thiophosphate (TOTP) in benzene and stripped from the organic phase with...
Field determination of nanogram quantities of mercury in soils and rocks
Margaret Hinkle, Kam Wo Leong, F. N. Ward
1965, Open-File Report 65-71
A method for determining nanogram quantities of mercury in geological materials is based on the catalytic effect of mercury on the reaction of ferrocyanide with nitrosobenzene to produce a violet-covered compound whose intensity if proportional to the mercury present. The mercury is released by heating a sample of soil or...
Geology and water resources of Portage County, Wisconsin
Charles Lee Roy Holt
1965, Water Supply Paper 1796
Portage County has abundant resources of generally good quality water and, although water problems exist locally, depletion or general scarcity of water is not likely in the foreseeable future. The county receives annually about 31 inches of precipitation, of which about 21 inches is lost as evaportranspiration. The average annual water...