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36991 results.

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Page 925, results 23101 - 23125

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Paleomagnetic study of the As Sarat volcanic field, southwestern Saudi Arabia
Karl S. Kellogg, Richard L. Reynolds
1981, Open-File Report 81-675
Four stratigraphic sections through alkali basalt flows of Oligocene-Miocene age (24 to 29 m.y.) in the As Sarat volcanic field, southwestern Saudi Arabia, were sampled for paleomagnetic study. Forty-two magnetically acceptable flows (139 samples) yield a mean direction of magnetization of D=-4.7°, 1=15.2° (α95=4.3°), which defines a paleomagnetic pole at...
Preliminary hydrologic evaluation of the North Horn Mountain coal-resource area, Utah
M.J. Graham, John E. Tooley, Don Price
1981, Open-File Report 81-141
North Horn Mountain is part of a deeply dissected plateau in central Utah which is characterized by deep, narrow, steep-walled canyons with local relief of more than 1,000 feet. Geologic units exposed in the North Horn Mountain area range in age from Late Cretaceous to Holocene and contain two mineable...
A manual of modified analytical procedures for conventional rock analysis
Herbert Kirschenbaum
1981, Open-File Report 81-359
This manual was written to establish the most accurate analytical methodology for determining the major constituents in silicate rocks. This report describes modified classical procedures for determining the amount of SiO2, Al2O3, Fe2O3, FeO, CaO, MgO, H2O-, H2O+, TiO2, P2O5, MnO, CO2, and S in silicate rocks. In the determination...
Modification of the Tangborn short-term hydrometeorological model, with trial results from the Baker River basin, Washington
M.R. Karlinger, J. D. Wilson
1981, Open-File Report 81-694
This report presents a modification of the short-term hydrometeorological model (Tangborn, 1978) for estimating river-basin snowmelt runoff. A multiple linear regression replaces a nonlinear regression scheme to correct for temperature effects of snowmelt runoff. Results based on data from the Baker River basin, Washington, indicate that model performance is improved...
Ground-water data for Michigan, 1980
G.C. Huffman
1981, Open-File Report 81-811
The purpose of this report is to make available the 1980 records of water levels and related data for the principal aquifers of the State. This report is written for municipalities, industries, institutions, consultants, drillers, hydrologists and other people interested in the ground-water resources....
Catalog of earthquakes along the San Andreas fault system in Central California, October-December 1977
L. Fluty, S.M. Marks
1981, Open-File Report 81-1325
Numerous small earthquakes occur each day in the Coast Ranges of central California. The detailed study of these earthquakes provides a tool for gaining insight into the tectonic and physical processes responsible for the generation of damaging earthquakes. This catalog contains the fundamental parameters for earthquakes located within and adjacent...
Depth estimation for ordinary high water of streams in the Mobile District of the U.S. Army Corps of Engineers, Alabama and adjacent states
Joe R. Harkins, Mark E. Green
1981, Open-File Report 81-481
Drainage areas for about 1,600 surface-water sites on streams and lakes in Florida are contained in this report. The sites are generally either U.S. Geological Survey gaging stations or the mouths of gaged streas. Each site is identified by latitude and longitude, by the general stream type, and by the...
Lineaments and fracture traces, Jennings County and Jefferson Proving Ground, Indiana
T. K. Greeman
1981, Open-File Report 81-1120
Jennings and several adjacent counties are economically restricted "by inadequate water supplies. The North Vernon Water Utility, supplying more than 25 percent of Jennings County's population, obtains its water from the Vernon Fork Muscatatuck River, although streamflow is less than the average daily withdrawal 69 days of the year. The...
Hydrology of area 3, Eastern Coal Province, Pennsylvania
William J. Herb, L. C. Shaw, Deborah E. Brown
1981, Open-File Report 81-537
Hydrologic data are presented for area 3 of the Eastern Coal Province, 4,077 square miles of the lower Allegheny River basin in western Pennsylvania. Seventy-three streams were sampled three times during the 1979 and 1980 water years for specific conductance, pH, acidity, alkalinity, dissolved and total iron, dissolved and total...
Aquatic biology of the Redwood Creek and Mill Creek drainage basins, Redwood National Park, Humboldt and Del Norte counties, California
Rick T. Iwatsubo, R. C. Averett
1981, Open-File Report 81-143
A 2-year study of the aquatic biota in the Redwood Creek and Mill Creek drainage basins of Redwood National Park indicated that the aquatic productivity is low. Densities of coliform bacteria were low except in Prairie Creek, a tributary to Redwood Creek, where a State park, county fish hatchery, grazing...