Mineral resource potential map of the San Gorgonio Wilderness, San Bernardino County, California
No abstract available.
California↗
Geology topics
N. T. Zilka
Publications and source records attributed to N. T. Zilka.
Mineral resources of the Scotchman Peak Wilderness Study Area, Lincoln and Sanders counties, Montana, and Bonner County, Idaho
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Bulletin↗
Mineral resources of the Cabinet Mountains Wilderness, Lincoln and Sanders Counties, Montana
This report describes the differential array, of seismometers recently installed at the Hollister, California, Municipal Airport. Such an array of relatively closely spaced seismometers has already been installed in El Centro and provided useful information for both engineering and seismological applications from the 1979 Imperial Valley earthquake. Differential ground motions, principally due to horizontally propagating surface waves, are important in determining the stresses in such extended structures as large mat foundations for nuclear power stations, dams, bridges and pipelines. Further, analyses of the records of the 1979 Imperial Valley earthquake from the differential array have demonstrated the utility of short-baseline array data in tracking the progress of the rupture wave front of an earthquake.
Open-File Report↗
Mineral resources of the North Absaroka study area, Park and Sweet Grass counties, Montana
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Open-File Report↗
Mineral resources of the Scotchman Peak Wilderness study area, Lincoln and Sanders Counties, Montana, and Bonner County, Idaho
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Open-File Report↗
Mineral resources of the eastern part of the Sawtooth National Recreation Area, Custer and Blaine Counties, Idaho
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Open-File Report↗