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Page 5535, results 138351 - 138375

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Seismic reflection profiles from cooperative investigations in the Straight of Juan de Fuca by the U.S. Geological Survey and Geological Survey of Canada aboard the Canadian Survey ship Parizeau between May 15 and June 3, 1972; Part 1 (easternmost segment)
Parke Detweiler Snavely Jr., D. L. Tiffin
1980, Open-File Report 80-239
In order to develop new data pertaining to the tectonic setting and potential geologic hazards in the Strait of Juan de Fuca and northern Puget Sound, a cooperative seismic reflection profile, gravity, and magnetic survey was conducted aboard the Canadian Survey Ship PARIZEAU in 1972. Results of approximately 2300 km...
A catalogue of drill core recovered from Kilauea Iki lava lake, from 1967 to 1979
Rosalind Tuthill Helz, Norman G. Banks, Thomas J. Casadevall, Richard S. Fiske, R. B. Moore
1980, Open-File Report 80-504
The purpose of this report is to serve as a descriptive catalogue for drill core recovered from Kilauea Iki lava lake, from 1967 to 1979. Kilauea Iki lava lake was formed when lavas of the 1959 summit eruption were ponded in Kilauea Iki pit crater, a large pit crater...
Preliminary free-air gravity map, Norton Basin, Alaska
Michael A. Fisher, P.H. McClellan, M.L. Holmes, J.R. Childs
1980, Open-File Report 80-1068
Gravity data shown here were measured with LaCoste and Romberg sea gravimeter S-53 mounted on a 3 axis inertial platform (LaCoste and others, 1967, Valiant and LaCoste, 1976). Primary navigation was by satellite, integrated with course and speed measurements from doppler sonar and gyrocompass. Gravity data were filtered prior to...
Preliminary map showing freshwater heads for the Red River Formation, Bighorn Dolomite, and equivalent rocks of Ordovician age in the Northern Great Plains of Montana, North Dakota, South Dakota, and Wyoming
W. Roger Miller, S.A. Strausz
1980, Open-File Report 80-730
A map showing freshwater heads for the Ordovician Red River Formation, Bighorn Dolomite, and equivalent rocks has been prepared as part of a study to determine the water-resources potential of the Mississippian Madison Limestone and associated rocks in the Northern Great Plains of Montana, North and South Dakota, and Wyoming....
Preliminary map showing freshwater heads for the Mission Canyon and Lodgepole limestones and equivalent rocks of Mississippian age in the Northern Great Plains of Montana, North Dakota, South Dakota, and Wyoming
W. Roger Miller, S.A. Strausz
1980, Open-File Report 80-729
A potentiometric-surface map showing freshwater heads for the Mission Canyon and Lodgepole Limestones of Mississippian age has been prepared as part of a study to determine the water-resources potential of the Mississippian Madison Limestone and associated rocks in the Northern Great Plains of Montana, North and South Dakota, and Wyoming....
Lemhi Pass drilling project, Montana
Mortimer Hay Staatz
1980, Open-File Report 80-312
The Lemhi Pass district has the largest thorium resources of any vein district in the United States (Staatz and others, 1979, p. 10). Most of the resources occur in veins that have an average grade of between 0.1 and 2.0 percent Th02. More than 200 thorium-bearing veins have been mapped...
Bedrock topography of southwest Iowa
Lyle Sendlein, Jack L. Gilmore
1980, IMAP 1222
The bedrock in Iowa (Hershey, 1969) is generally overlain by unconsolidataed deposits consisting of glacial drift, alluvium, and loess. Loess deposits are most extensive in areas bordering the Missouri River flood plain, attaining a thickness of over 200ft in some places. The total thickness of the unconsolidated sediments ranges from...
The heliothermic lake: a direct method of collecting and storing solar energy
Douglas W. Kirkland, J. Platt Bradbury, Walter E. Dean
1980, Open-File Report 80-807
Heliothermic lakes contain a sun-heated layer of warm, saline water beneath a surface layer of cooler, less saline water. The two layers are separated by a chemocline, a stratum in which salinity increases progressively with depth. The chemocline, the position of which varies from lake to lake, functions as a...