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Page 5072, results 126776 - 126800

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Mid- and North Atlantic multichannel seismic reflection profiles, 7, 8 A, B, and C, 12 E, F, G, H, I, and J, and 13 A, B, C, D, E, F, G, and H
Water Resources Division, U.S. Geological Survey
1979, Open-File Report 78-685
Available are four multichannel profiles collected by Digicon Geophysical Corporation in 1975 using a 48-channel streamer (3600 m long), and a 27.9 cubic liter airgun array. They were processed in Denver on the Phoenix "I" by William C. Petterson. The processing includes demultiplexing and resampling, geometry and common-depth-point, definition, velocity...
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...
Summary of U.S. Geological Survey investigations and hydrologic conditions in the Southwest Florida Water Management District for 1978
Robert Lloyd Knutilla, H.C. Rollins
1979, Open-File Report 79-1257
This report summarizes water-resources investigations in the Southwest Florida Water Management District performed by the U.S. Geological Survey, Water Resources Division, for fiscal year 1978. The investigations are part of the Federal program of appraising the nation 's water resources. The cooperative program for fiscal year 1978 included 37 interpretive...
Assessment of potential impacts to the hydrologic system related to surface mining
R. F. Hadley
1979, Open-File Report 79-1598
With the increasing demand for energy minerals, such as coal and uranium, and other minerals, Indian lands have received the attention of leasing, exploration, and mining interests. If these mineral resources, together with all other land resources, are to be managed properly by tribal decisionmakers, they will need more information....
Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bering Glacier, Icy Bay, Middleton Island, and Yakutat quadrangles, Alaska
Edward Huntington Cobb
1979, Open-File Report 79-1246
This summary of references is designed to aid in library research on metallic and nonmetallic (other than mineral fuels and construction materials) mineral occurrences in the Bering Glacier, Icy Bay, Middleton Island, and Yakutat quadrangles, Alaska. References to most reports of the Geological Survey, U.S. Bureau of Mines, and State...
Hydrogeologic features of the alluvial deposits in the Nowood River drainage area, Bighorn Basin, Wyoming
M. E. Cooley, William J. Head
1979, Open-File Report 79-1291
In the Nowood River drainage area, Wyoming, the principal deposits comprising the alluvial aquifer include the flood-plain and younger (generally undissected) alluvial-fan deposits and a unique boulder-fan gravel. Other deposits mapped, but virtually nonwater yielding, are the older (dissected) alluvial-fan, pediment, and terrace deposits. Terraces are capped by gravel and...
Hydrologic data for wells, springs, and streams in Boulder County, Colorado
Dennis C. Hall, Elaine L. Boyd, Doug Cain
1979, Open-File Report 79-979
Hydrologic data collected in 1975-77 as part of a comprehensive water-resources investigation of Boulder County, Colo., by the U.S. Geological Survey in cooperation with the Boulder County Health Department and the Colorado Geological Survey are presented in this report. The data, in tabular and graphic form, consist of water-quality analyses...
Potential geologic hazards and constraints for blocks in proposed North Atlantic OCS oil and gas lease sale 42
Robert W. Hall
1979, Open-File Report 79-1285
Analysis of side-scan sonar, 3.5 kHz subbottom profiler, sparker, and fathometer data (approximately 9,900 km) from 206 blocks originally selected for proposed Outer Continental Shelf Lease Sale 42 disclosed potential hazards to oil and gas exploration and development operations. These potential hazards are a shallow gas deposit in one proposed...
A total intensity magnetic anomaly map of the Red Sea and its interpretation
Stuart A. Hall
1979, Open-File Report 80-131
All available total intensity magnetic field data have been used to prepare a total intensity magnetic anomaly map of the Red Sea at a scale of 1:2,000,000. These include airborne surveys at various elevations and numerous sea surveys. The data have been digitised at approximately one kilometre intervals and the...
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...
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...
Quaternary stratigraphic sections with radiocarbon dates, Chandalar Quadrangle, Alaska
Thomas D. Hamilton
1979, Open-File Report 79-751
Surficial geologic mapping of the Chandalar quadrangle was carried out during 1975 and 1976 as part of the Arctic Environmental Program of the U.S. Geological Survey. Ten organic samples were collected at that time for radiocarbon dating. Six samples have been dated by Stephen W. Robinson at the U.S. Geological...
Hydrologic reconnaissance of western Arctic Alaska, 1976 and 1977
Joseph M. Childers, Donald R. Kernodle, Robert M. Loeffler
1979, Open-File Report 79-699
A reconnaissance of the water resources of the western Arctic was conducted during April 1976 and August 1977. Data were collected at 9 springs, 9 lakes and 22 stream sites.Using slope-conveyance methods based on field evidence, estimates of bankfull and maximum evident flood-peak discharges were made for 20 selected streams....