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Page 5093, results 127301 - 127325

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Statistics and earth sciences; a challenge for the 80's; the geologists viewpoint
Richard B. McCammon
1979, Open-File Report 79-1245
It used to be that university students took up geology because they were attracted to the outdoors. This attraction developed perhaps because of a weekend field trip, or a summer field camp, or, for the lucky ones, a field season with an oil company. Whatever the reason, to be a...
DITT: a computer program for Data Interpretation for Torsional Tests
Albert T.F. Chen
1979, Open-File Report 79-1463
Measurements of the helium concentration of soil samples collected and stored in Vacutainer-brand evacuated glass tubes show that Vacutainers are reliable containers for soil collection. Within the limits of reproducibility, helium content of soils appears to be independent of variations in soil temperature, barometric pressure, and quantity of soil moisture...
Basin-margin depositional environments of the Fort Union and Wasatch Formations in the Buffalo-Lake De Smet area, Johnson County, Wyoming
Stanley L. Obernyer
1979, Open-File Report 79-712
The Paleocene Fort Union and Eocene Wasatch Formations along the east flank of the Bighorn Mountains in the Buffalo-Lake De Smet area, Wyoming, consist of continental alluvial fan, braided stream, and poorly drained alluvial plain deposits. The Fort Union conformably overlies the Cretaceous Lance Formation, which is marine in its...
Structural controls of hot-spring systems on southwestern Montana
Robert A. Chadwick, Robert Benjamin Leonard
1979, Open-File Report 79-1333
Thermal waters that issue as hot (more than 38C) springs in southwestern Montana appear to circulate to depth along Cenozoic block faults, deep fractures penetrating the dominantly crystalline rock crust, or major structural lineaments. At individual hot springs, rising thermal waters are transmitted along conduits formed by the intersection of...
Portable field kit for determining uranium in water
John B. McHugh
1979, Open-File Report 79-429
The pressing need for on-site field analyses of the uranium content of surface and ground waters has promoted the development of a simple, light-weight, relatively cheap, portable kit to make such determinations in the field. Forty to sixty water samples per day can be analyzed for uranium to less than...
Uranium results for 147 water samples from the Elkhorn Wilderness Study Area, Montana
John B. McHugh, William R. Miller
1979, Open-File Report 79-675
One hundred forty seven water samples were corrected from the Elkhorn Wilderness during the summer of 1977 as a part of a mineral resource assessment study. Each sample was analyzed for uranium. Specific conductance and pH were also measured. Sample analyses and site locations are presented in this report....
Observations on the geology and petroleum potential of the Cold Bay-False Pass area, Alaska Peninsula
Hugh James McLean
1979, Open-File Report 79-1605
Upper Jurassic strata in the Black Hills area consist mainly of fossiliferous, tightly cemented, gently folded sandstone deposited in a shallow marine environment. Upper Cretaceous strata on Sanak Island are strongly deformed and show structural features of broken formations similar to those observed in the Franciscan assemblage of California. Rocks...
The quality of surface water on Sanibel Island, Florida, 1976-77
Benjamin F. McPherson, T.H. O’Donnell
1979, Open-File Report 79-1478
The quality of surface water in parts of the interior of Sanibel Island has been periodically degraded by high concentrations of salt or macronutrients and by low concentrations of dissolved oxygen. In 1976 the chloride concentration of surface water ranged from about 500 milligrams per liter to almost that of...
Southeast Georgia embayment high-resolution seismic-reflection survey
Douglas W. Edsall
1979, Open-File Report 78-800
A high-resolution seismic survey of the offshore part of the Southeast Georgia Embayment on about a 20 km spacing was completed in 1976. A stratigraphic analyses of the data shows that the largest controlling factor in the depositional history of the shelf has been the Gulf Stream. These currents have...
K-Ar age of alunite alteration at Red Mountain, Lake City area, western San Juan Mountains, Colorado
Harald H. Mehnert, John F. Slack, Gerald T. Cebula
1979, Open-File Report 79-1642
The San Juan Mountains of southwestern Colorado are famous for rich vein deposits of base and precious metals and for patterns of conspicuous hydrothermal alteration. Areas of acid-sulfate alteration, characterized by extensive base leaching of volcanic rocks or hypabyssal plutons, are of current interest because of their local association with...
Directory of local assistance centers of the National Water Data Exchange (NAWDEX)
Melvin D. Edwards
1979, Open-File Report 79-423
The National Water Data Exchange (NAWDEX), managed by the U.S. Geological Survey, has established a network of Local Assistance Centers throughout the United States and Puerto Rico to assist users of water data in identifying and locating the data they need. This Directory provides the information needed to contact any...
Identification codes for organizations listed in computerized data systems of the U.S. Geological Survey
Melvin D. Edwards, Beverly M. Myers
1979, Open-File Report 79-331
This report contains codes for the identification of public and private organizations listed in computerized data systems. These codes are used by the U.S. Geological Survey's National Water Data Exchange (NAWDEX), National Water Data Storage and Retrieval System (WATSTORE), National Cartographic Information Center (NCIC), and Office of Water Data Coordination...
Surface subsidence and collapse in relation to extraction of salt and other soluble evaporites
John R. Ege
1979, Open-File Report 79-1666
Extraction of soluble minerals, whether by natural or man-induced processes, can result in localized land-surface subsidence and more rarely sinkhole formation. One process cited by many investigators is that uncontrolled dissolving of salt or other soluble evaporites can create or enlarge underground cavities, thereby increasing the span of the unsupported...
Summary of hydrologic data for Tampa Bypass Canal System, July 1974 to September 1976
Kennedy W. Causseaux, H.C. Rollins
1979, Open-File Report 79-1297
The Tampa Bypass Canal is part of a flood-control project east of the city of Tampa under construction by the U.S. Army Corps of Engineers. It will divert floodwater from the Hillsborough River at points upstream from Tampa through a canal system to McKay Bay. The U.S. Geological Survey began...