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Page 991, results 24751 - 24775

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Helium in soil-gas and helium/radon in ground water in the vicinity of a south Texas uranium roll-type deposit
G. Michael Reimer, C.G. Bowles, D.G. Murrey, J.M. Been
1979, Open-File Report 79-1625
A survey was run in the vicinity of a south Texas uranium roll-type deposit to determine the general concentration of helium in the soil gas and helium/radon ratios in the ground water for deposits of this nature. The helium in soil-gas concentrations are typical of the concentrations found associated with...
Geochemical data for Cohutta Wilderness, Georgia-Tennessee
D. F. Siems, A. L. Meier, E. L. Mosier, J. E. Gair
1979, Open-File Report 79-1352
Trace-element data obtained from stream-sediment, soil, and rock-chip samples by semiquantitative spectrographic and atomic absorption analyses.Geochemical data are grouped alphabetically by letter prefix and arranged in numerical order within the lettered groups.The listed data were obtained from samples collected in 1977 and 1978 by Jacob E. Gair and John F....
Abundance and distribution of thorium in the carbonatite stock at Iron Hill, Powderhorn District, Gunnison County, Colorado
Theodore J. Armbrustmacher
1979, Open-File Report 79-536
The carbonatite stock at Iron Hill is part of an alkalic complex of Cambrian or latest Precambrian age containing pyroxenite, uncompahgrite, ijolite, nepheline syenite, and related rocks characterized by their subsilicic composition and by their lack of calcic plagioclase. Thorium averages 36.2 parts per million (ppm) Th (0.0041 percent Th02)...
Hydrographic properties and primary productivity of San Francisco Bay waters, March 1976-July 1977
Brian E. Cole, Raynol E. Herndon
1979, Open-File Report 79-983
Data are presented on the quantitative relations between water chemistry and phytoplankton productivity in San Francisco Bay between March 1976 and July 1977. Spatial distributions are listed for: salinity, temperature, transmission, chlorophyll-a, fluorescence, dissolved oxygen, orthophosphate, nitrate + nitrite, nitrite, ammonia, particulate organic carbon, alkalinity, pH, pCO2, suspended sediment and...
Age control for the latest movements on the Melones fault zone in the Sierra Nevada foothills belt from K-Ar dates for Late Tertiary intrusions
J. Alan Bartow
1979, Open-File Report 79-582
K-Ar dates of 4.12 million years (m.y.) and 4.03 m.y. for two small dacite and rhyodacite intrusive bodies near Mokelumne Hill, Calif., provide important age control for the late Tertiary Mehrten Formation in this area because the Mehrten is both intruded by the dacite and rhyodacite and depositionally overlies the...
Sediment deposition in the White River Reservoir, northwestern Wisconsin
W. G. Batten, S. M. Hindall
1979, Open-File Report 79-1330
The history of deposition in the White River Reservoir was reconstructed from a study of sediment in the reservoir. Suspended-sediment concentrations, particle size, and streamflow characteristics were measured at gaging stations upstream and downstream from the reservoir from November 1975 through September 1977- Characteristics of the sediments were determined from...