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Page 5335, results 133351 - 133375

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The Alaskan Mineral Resource Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Tanacross quadrangle, Alaska
Helen Laura Foster, N. R. D. Albert, D.F. Barnes, G.C. Curtin, Andrew Griscom, D.A. Singer, James G. Smith
1976, Circular 734
The Tanacross quadrangle, consisting of 17,400 km 2 (6,700 mi 2) in east-central Alaska, was investigated by an interdisciplinary research team for the purpose of assessing the mineral resource potential of the quadrangle. This report provides the background information for a folio of maps on the geology, geophysics, reconnaissance geochemistry,...
The Guatemalan earthquake of February 4, 1976, a preliminary report
A. F. Espinosa, editor(s)
1976, Professional Paper 1002
The Guatemalan earthquake of February 4, 1976, with a surface-wave magnitude of 7.5, was generated by left-lateral slippage on the Motagua fault and was felt over an area of at least 100,000 km2. This earthquake claimed more than 22,700 lives and injured more than 76,000 people. The preliminary estimate of...
Water-quality data for the Southern Ute Indian Reservation, southwestern Colorado
E. Carter Hutchinson, Robert E. Brogden
1976, Open-File Report 76-16
Water-quality data from a study by the U.S. Geological Survey on the Southern Ute Indian Reservation in southwestern Colorado are presented in two tables. The data were collected during 1973-76 from 338 ground-water and surface-water samples. All samples were analyzed for major catons and anions, and selenium and arsenic. Data...
Hydrologic reconnaissance of the geothermal area near Klamath Falls, Oregon
E.A. Sammel, D. L. Peterson
1976, Water-Resources Investigations Report 76-127
Geothermal phenomena observed in the vicinity of Klamath Falls include hot springs with temperatures that approach 204°F (96 o C) (the approximate boiling temperature for the altitude), steam and water wells with temperatures that exceed 212°F (100°C), and hundreds of warm-water wells with temperatures mostly ranging from 68° to 95°F...
Reservoir-system model for the Willamette River basin, Oregon
James O. Shearman
1976, Circular 715-H
For nearly half a century the Willamette River in Oregon experienced severe dissolved-oxygen problems related to large loads of organically rich waste waters from industries and municipalities. Since the mid-1950 's dissolved oxygen quality has gradually improved owing to low-flow augmentation, the achievement of basinwide secondary treatment, and the use...
Source beds of petroleum in the Denver Basin
Paul J. Swetland, Jerry L. Clayton
1976, Open-File Report 76-572
Crude oil and shale samples from the Denver basin of Colorado, Wyoming, and Nebraska were analyzed by organic geochemical techniques to determine the stratigraphic occurrence and regional distribution of petroleum source beds. The study demonstrates that the oils produced from Cretaceous Sussex, Shannon, ?D? and 'J' sandstone reservoirs are genetically...
Geologic appraisal of the petroleum potential of offshore southern California; the borderland compared to onshore coastal basins
James Carlton Taylor
1976, Circular 730
Offshore southern California is part of a much larger Pacific continental margin, and the two areas have a similar geologic history at least as far back as middle Tertiary time. Assessment of the petroleum potential of the offshore Southern California borderland is accomplished by examining the adjacent highly explored productive...
Ground water in the San Juan metropolitan area, Puerto Rico
H. R. Anderson
1976, Water-Resources Investigations Report 75-41
Ground water in the San Juan, Puerto Rico, area has played a declining role in water supply since the completion of the Lofza reservoir project in the early 1950's. Ground-water potential is limited because of the small size of the aquifers and susceptibility to seawater intrusion. Of the 30 million...