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Page 318, results 7926 - 7950

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Not all publications have extents, not all extents are completely accurate
Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho
Reed S. Lewis, Pamela D. Derkey
1999, Open-File Report 99-438
The geology of the Thompson Falls 1:100,000 quadrangle, Idaho was compiled by Reed S. Lewis in 1997 onto a 1:100,000-scale greenline mylar of the topographic base map for input into a geographic information system (GIS). The resulting digital geologic map GIS can be queried in many ways to produce a...
High-angle faults in the basement of Yucca Flat, Nevada Test Site, Nevada, based on analysis of a constrained gravity inversion surface
Geoffrey A. Phelps, Edwin H. McKee
1999, Open-File Report 99-383
Using a model of the topographic subsurface derived from drill hole and gravity inversion analysis of the basement rocks in Yucca Flat, Nevada Test Site (NTS), Nevada, a fault map and digital fault dataset were constructed based on offsets of the basement surface. Because these faults are, in large part,...
Experimental testing of flexible barriers for containment of debris flows
Jay S. DeNatale, Richard M. Iverson, Jon J. Major, Richard G. LaHusen, Gregg L. Fliegel, John D. Duffy
1999, Open-File Report 99-205
In June 1996, six experiments conducted at the U.S. Geological Survey Debris Flow Flume demonstrated that flexible, vertical barriers constructed of wire rope netting can stop small debris flows. All experimental debris flows consisted of water-saturated gravelly sand with less than two percent finer sediment by weight. All debris flows...
Evaluation of the Multi-Chambered Treatment Train, a retrofit water-quality management device
Steven R. Corsi, Steven R. Greb, Roger T. Bannerman, Robert E. Pitt
1999, Open-File Report 99-270
This paper presents the results of an evaluation of the benefits and efficiencies of a device called the Multi-Chambered Treatment Train (MCTT), which was installed below the pavement surface at a municipal maintenance garage and parking facility in Milwaukee, Wisconsin. Flow-weighted water samples were collected at the inlet and outlet...
Geometry, structure, and concealed lithology of the San Rafael Basin, southeastern Arizona
Mark W. Bultman
1999, Open-File Report 99-399
The contiguous United States has been well explored for exposed conventional mineral deposits. Therefore, it is likely that many economically viable and strategically significant conventional undiscovered mineral deposits will be found in bedrock concealed beneath basin sediments. Mineral resource assessments must incorporate an understanding of the geometry, structure, and concealed...
Digital Geologic Map of the Wallace 1:100,000 Quadrangle, Idaho
Reed S. Lewis, Russell F. Burmester, Mark D. McFaddan, Pamela D. Derkey, Jon R. Oblad
1999, Open-File Report 99-390
The geology of the Wallace 1:100,000 quadrangle, Idaho was compiled by Reed S. Lewis in 1997 primarily from published materials including 1983 data from Foster, Harrison's unpublished mapping done from 1975 to 1985, Hietenan's 1963, 1967, 1968, and 1984 mapping, Hobbs and others 1965 mapping, and Vance's 1981 mapping, supplemented...
Rock falls from Glacier Point above Camp Curry, Yosemite National Park, California
Gerald F. Wieczorek, James B. Snyder
1999, Open-File Report 99-385
A series of rock falls from the north face of Glacier Point above Camp Curry, Yosemite National Park, California, have caused reexamination of the rock-fall hazard because beginning in June, 1999 a system of cracks propagated through a nearby rock mass outlining a future potential rock fall. If the estimated...
Abstracts of the 11th Annual U.S. Geological Survey, Central Region, 1999 Poster Review; Collected Abstracts of Selected Poster Papers Presented at Scientific Meetings
1999, Open-File Report 99-321
In 1999, the U.S. Geological Survey Central Region had a poster review where USGS scientists showcased posters that had been presented at scientific meetings. This report contains abstracts for selected posters that were presented at this review. Science topics were from several USGS teams with a broad range of topics....