Borehole gravity surveys in native-sulfur deposits, Culberson and Pecos counties, Texas
James W. Schmoker, Stephen L. Robbins
1979, Open-File Report 79-361
Native-sulfur deposits in west Texas are heterogeneous, with sulfur content and formation properties varying significantly over small vertical and horizontal distances. The zone of recovery of the Frasch process extends tens or even hundreds of feet around each recovery well, but the investigation depth of most wire-line logs is measured...
Stratigraphic sections of Jurassic San Rafael Group and adjacent rocks in Rio Blanco and Garfield counties, Colorado
James Clifton Wright, Dayton Delbert Dickey
1979, Open-File Report 79-245
These sections were measured prior to 1960, before adoption of the metric system. Publication was delayed by other assignments of the authors and later by the untimely death of J. C. Wright. They are being released at this time because of the increased interest in the uranium potential of Jurassic...
Stratigraphic sections of Jurassic San Rafael Group and adjacent rocks in Routt, Park, Pitkin, and Gunnison counties, Colorado
James Clifton Wright, Dayton Delbert Dickey
1979, Open-File Report 79-249
These sections were measured prior to 1960, before adoption of the metric system. Publication was delayed by other assignments of the authors and later by the untimely death of J. C. Wright. They are being released at this time because of the increased interest in the uranium potential of Jurassic...
Petrographic and trace-element data on rocks from the Yemen Arab Republic
William C. Overstreet, Mary M. Donato, Maurice J. Grolier, J. A. Domenico, George L. Crenshaw, G. Chase Tibbitts
1979, Open-File Report 80-132
Petrographic descriptions are given for rocks in the Yemen Arab Republic (YAR), including mainly Precambrian igneous and metamorphic rocks from the southeastern part of the country, which previously was geologically undescribed. Also included are descriptions of Cretaceous and/or Tertiary lavas of the Yemen Volcanics, Miocene(?) alkali granite, Pliocene caprock of...
Ancient mines of the Farah Garan area, southwestern Saudi Arabia
C. W. Smith, H. Richard Blank
1979, Open-File Report 79-1659
Ancient miners, in quest of oxidized copper minerals, gold, silver, and possibly zinc, mined gossans to approximately 20 m depth in an area 1.1 by 0.5 km in extent at Farah Garan. The gossans, derived from sulfides, are ordinarily found at contacts between marble lenses and metavolcanic-metasedimentary rocks, but in...
Regional flood-frequency relations for west-central Florida
M.A. Seijo, R.F. Giovannelli, J. F. Turner
1979, Open-File Report 79-1293
This report presents regional relations for estimating the magnitude and frequency of floods on streams in west-central Florida. Flood prediction equations derived cover 20, 5-, 25-, 100-, 200-, and 500-year recurrence intervals. Annual floods for three geographic areas of west-central Florida were found to relate significantly to basin characteristics. Basin...
Hydrogeology of the Gatlinburg area, Tennessee
Ann Zurawski
1979, Open-File Report 79-1167
A study of ground-water availability in the Gatlinburg area, Tenn., was undertaken to improve concepts of ground-water occurrence in the Blue Ridge and demonstrate that ground water is present in sufficient quantities to provide an alternative to surface water as a source of supply. Of 25 test wells, 8 produced...
Geologic map of Mount Laguna 7 1/2' quadrangle, San Diego County, California
Victoria R. Todd
1979, Open-File Report 79-862
No abstract available....
Stratigraphic sections of Jurassic San Rafael Group and adjacent rocks in San Juan and McKinley counties, New Mexico
James Clifton Wright, Dayton Delbert Dickey
1979, Open-File Report 79-715
Reconnaissance snow surveys of the National Petroleum Reserve in Alaska, April 1977 and April-May 1978
Charles E. Sloan, Dennis Trabant, William Glude
1979, Open-File Report 79-1342
Reconnaissance snow surveys of the NPRA (National Petroleum Reserve in Alaska) were made in April 1977 and April-May 1978 to ascertain general snow characteristics and distribution patterns. Thirty-nine sites in 1977 and forty-one sites in 1978 were sampled to determine snow depth, density, structure, and snow-soil interface temperature. In addition,...
Evaluation of three potential pumped storage sites, Mokelumne River basin, California
David E. Wilson, Frank W. Smith
1979, Open-File Report 79-1678
Particulate organic carbon in San Francisco Bay, California, 1971-1977
Laurence E. Schemel, Lee A. Dedini
1979, Open-File Report 79-512
The organic-carbon content of suspended particulate matter is determined by wet oxidation and analysis of the resulting CO2 with an infrared analyzer. Modifications of methods and improved designs of apparatus are presented.Results of particulate organic carbon (POC) analyses from 1971 through 1977 show that concentrations in North San Francisco Bay...
Stratigraphic sections of Jurassic San Rafael Group and adjacent rocks in Valencia and Sandoval counties, New Mexico
James Clifton Wright, Dayton Delbert Dickey, Val L. Freeman
1979, Open-File Report 79-836
A continuous water sampling and multi-parameter measurement system for estuaries
Laurence E. Schemel, Lee A. Dedini
1979, Open-File Report 79-273
Salinity, temperature, light transmissivity, oxygen saturation, turbidity, pH, pCO2, and chlorophyll a fluorescence of a pumped water sample are continuously measured with a system designed primarily for estuarine studies. Near-surface water from a depth of 2 m is sampled continuously while the vessel is underway or water at depths to...
Stratigraphic sections of Jurassic San Rafael Group and adjacent rocks in Wayne County, Utah
James Clifton Wright, Dayton Delbert Dickey, Richard P. Snyder
1979, Open-File Report 79-1126
These sections were measured prior to 1960, before adoption of the metric system. Publication was delayed by other assignments of the authors and later by the untimely death of J. C. Wright. They are being released at this time because of the increased interest in the uranium potential of Jurassic...
Evaluation of a color-coded Landsat 5/6 ratio image for mapping lithologic differences in western South Dakota
Gary L. Raines, R.F. Bretz, George W. Shurr
1979, Open-File Report 79-596
From analysis of a color-coded Landsat 5/6 ratio, image, a map of the vegetation density distribution has been produced by Raines of 25,000 sq km of western South Dakota. This 5/6 ratio image is produced digitally calculating the ratios of the bands 5 and 6 of the Landsat data and...
An economic analysis of selected strategies for dissolved oxygen management: Chattahoochee River, Georgia
John E. Schefter, Robert M. Hirsch
1979, Open-File Report 79-412
Using the Chattahoochee River as an example, a method for evaluating the cost-effectiveness of alternative strategies for dissolved oxygen (DO) management is demonstrated. The conceptual framework for the analysis is suggested by the economic theory of production. The minimum flow of the River and the percentage of the total waste...
Hydrogeologic data from the northern Powder River Basin, southeastern Montana
Steven E. Slagle, James R. Stimson
1979, Open-File Report 79-1332
Hydrologic and geologic data have been collected as part of energy-related projects conducted by the U.S. Geological Survey in the northern Powder River basin of southeastern Montana. Records of 1924 stock, domestic, irrigation, public supply and test wells are tabulated in the report. The data include well location, depth of...
Analytical data on the Schwartzwalder uranium deposit, Jefferson County, Colorado
Edward J. Young
1979, Open-File Report 79-968
Some reconnaissance-type electrical surveys of Timber Mountain Caldera, Nye County, Nevada
Charles J. Zablocki
1979, Open-File Report 79-1695
Physical characteristics of suspended sediments, South Texas Continental Shelf
Gerald L. Shideler
1979, Open-File Report 79-362
This report presents the results of a three-year study of suspended sediments within the South Texas OCS region. The investigations were a part of the environmental studies of the South Texas Outer Continental shelf sponsored by the Bureau of Land Management. The physical properties of the suspended particulate system studied...
Knik Glacier, Alaska, May 1979 monument and glacier survey
Dennis C. Trabant, L.R. Mayo
1979, Open-File Report 80-48
From 1915, or earlier, to 1966, with the exception of 1963, Knik Glacier annually formed and released Lake George, the largest glacier-dammed lake in Alaska. Eleven geodetically controlled survey stations were defined in the basin, and 22 glacier surface altitudes were measured. This is the first effort in a continuing...
Palladium, platinum, and rhodium concentrations in mafic and ultramafic rocks from the Kizildag and Guleman areas, Turkey, and the Faryab and Esfandagheh-Abdasht areas, Iran
Norman J. Page, Tandogan Engin, Joseph Haffty
1979, Open-File Report 79-840
The Kizildag and Guleman areas, Turkey, and the Faryab and Esfandagheh-Abdasht areas, Iran, have produced chromite from ophiolite complexes consisting of harzburgite tectonite, dunite tectonite containing chromitite, pyroxenite, wehrlite, and gabbro. Forty-six samples from these complexes were analyzed in order to investigate the possibility of platinum-group metals being present that...
Historical statistics for copper in the United States, 1870-1978
Margaret Slade
1979, Open-File Report 79-1697
A study of uranium favorability of Cenozoic sedimentary rocks, Basin and Range Province, Arizona: Part I. General geology and chronology of pre-late Miocene Cenozoic sedimentary rocks
Robert Bryan Scarborough, Jan Carol Wilt
1979, Open-File Report 79-1429
This study focuses attention on Cenozoic sedimentary rocks in the Basin and Range Province of Arizona. The known occurrences of uranium and anomalous radioactivity in these rocks are associated with sediments that accumulated in a low energy environment characterized by fine-grained clastics, including important tuffaceous materials, and carbonate rocks. Most...
