Appraisal of ground water in the vicinity of the Leadville drainage tunnel, Lake County, Colorado
John T. Turk, O. James Taylor
1979, Open-File Report 79-1538
Ground water in the Leadville mining district occurs in granite, quartzite, limestone, sandstone, porphyry dikes, and unconsolidated material. These rocks form a single aquifer system because the formations are hydraulically connected through contact, mine workings, faulting, and fracturing. The aquifer is recharged by precipitation and water moves toward California Gulch...
Sample descriptions for test wells penetrating deep aquifers in Dallas and Sumpter counties, Alabama
John G. Newton
1979, Open-File Report 79-1485
Test wells in Dallas and Sumter counties, Alabama penetrated deep Cretaceous aquifers that are sources of future ground-water withdrawals. The test well in Dallas County was drilled to a depth of 1,460 feet, and the test well in Sumter County was drilled to a depth of 2,311 feet. The deep...
Single-Channel Seismic-Reflection Profiles and Side-Scan Sonar Records Collected During June 8-14, 1977, in the Middle Atlantic Shelf Area
David C. Twichell
1979, Open-File Report 79-580
A cruise aboard the R/V OCEANUS (Cruise 027) was completed by the U.S. Geological Survey during June 8-14, 1977evaluate the presence, extent, and activity of potentially mobile bedforms on the Middle Atlantic Continental Shelf, eastern United States. Based on information collected by the U.S. Geological Survey during·a geophysical survey in...
Graphic and tabular summaries of changes in stream-channel cross sections between 1976 and 1978 for Redwood Creek and selected tributaries, Humboldt County, and Mill Creek, Del Norte County, California
K. Michael Nolan
1979, Open-File Report 79-1637
Forty-eight surveyed stream-channel cross sections were established along Redwood Creek, Humboldt County, California between 1973 and 1974. Eighty-three cross sections were established at selected sites along tributaries to Redwood Creek between 1974 and 1976. Eleven surveyed stream channel cross sections were established in the Mill Creek drainage basin, Del Norte...
The Silurian salt deposits in eastern Lake, northwestern Ashtabula, and northeastern Geauga Counties, Ohio
Stanley E. Norris
1979, Open-File Report 79-269
Five salt zones, comprising single or multiple salt beds interbedded with dolomite, dolomititc shale and anhydrite, occur in a 250-square-mile area in eastern Lake, northwestern Ashtabula, and northeastern Geauga Counties, Ohio. The aggregate thickness of salt-bearing rocks, from the base of the lowest salt to the top of the highest...
Annual peak discharges from small drainage areas in Montana for stations discontinued before 1978
R. J. Omang, J. A. Hull, Charles Parrett
1979, Open-File Report 79-510
Annual peak stage and discharge data have been tabulated for crest-stage gage sites in Montana. The crest-stage program was begun in July 1955 to investigate the magnitude and frequency of floods from samll drainage areas. The program has expanded from 45 crest-stage gaging stations initially to 172 stations maintained in...
Preliminary map of iron provinces in the conterminous United States
Harry Klemic, Edwin Wilson Tooker
1979, Open-File Report 79-576-H
Sample location map and analytical data for rock samples collected in 1978, Chignik and Sutwik Island quadrangles, Alaska
William J. Pickthorn, M. E. Yount, E.F. Cooley, R. M. O’Leary, D.E. Detra, Gail Ito
1979, Open-File Report 79-1506
Preliminary geologic map of the Picket Pin to Mountain View sector of the Stillwater Complex, Stillwater County, Montana
Kenneth K. Segerstrom, R. R. Carlson
1979, Open-File Report 79-656
No abstract available. ...
Technique for estimating depth of 100-year floods in New Jersey
A. J. Velnich, Stanley L. Laskowski
1979, Open-File Report 79-419
Techniques are developed for use in estimating 100-year flood depths on New Jersey streams. Equations and graphs are presented relating the 100-year flood depth above the mean annual flood to drainage area and area of lakes and swamps. Separate relations for the Coastal Plain and non-Coastal Plain streams in the...
Clodine Fault, southwestern Houston metropolitan area, Texas
E.R. Verbeek, U. S. Clanton
1979, Open-File Report 79-947
No abstract available....
Preliminary lithologic and water quality data from test wells on Koehn Dry Lake, Kern County, California
Roger D. Dockter
1979, Open-File Report 79-1348
Tectonic map of southeast Arizona
Harald Drewes
1979, Open-File Report 79-775
No abstract available....
Ground-water hydrology of Martha's Vineyard, Massachusetts
David F. Delaney
1979, Open-File Report 79-917
Oblique map of the May 31, 1970, debris avalanche, Huascaran Mountain, Peru
Tau Rho Alpha
1979, Open-File Report 79-373
Preliminary geologic map of the Mount Siegel quadrangle, Nevada-California
John Harris Stewart, Donald C. Noble
1979, Open-File Report 79-225
No abstract available....
Oblique map of the Emperor Seamounts
Tau Rho Alpha
1979, Open-File Report 79-1672
Preliminary geologic map showing Quaternary deposits of the Lodi Quadrangle, California
Denis E. Marchand, Brian F. Atwater
1979, Open-File Report 79-933
Coal resource occurrence and coal development potential maps of the Johns Peak quadrangle, Sevier County, Utah
AAA Engineering and Drafting Inc.
1979, Open-File Report 79-1015
No abstract available....
Coal resource occurrence and coal development potential maps of the Johnny Moore Mountain Quadrangle, Jackson and Larimer counties, Colorado
AAA Engineering and Drafting Inc.
1979, Open-File Report 79-192
Preliminary reconnaissance geologic maps of the Columbia River Basalt Group in parts of eastern Washington and northern Idaho
Donald A. Swanson, R. D. Bentley, G. R. Byerly, J. N. Gardner, T. L. Wright
1979, Open-File Report 79-534
No abstract available....
Preliminary geologic map of the metavolcanic rocks in part of the Canyonville, Days Creek, and Glendale quadrangles, Oregon
Maureen G. Johnson, Norman J. Page
1979, Open-File Report 79-283
No abstract available....
Alteration and vein mineralization, Ladwig uranium mine, Jefferson County, Colorado
Alan R. Wallace
1979, Open-File Report 79-1615
Uranium ore at the Ladwig mine, Jefferson County, Colo., occurs in steeply dipping, northwest-striking faults and related fractures with a carbonate-adularia assemblage that forms in altered wallrocks and fills veins. The faults occur between large intrusive pegmatites and garnetiferous gneisses of Precambrian age, and were reactivated as the result of...
Occurrence of uranium in rocks of the intrusive complex at Ekiek Creek, western Alaska
Alan R. Wallace
1979, Open-File Report 79-1653
Uranium in the Ekiek Creek Complex of western Alaska is related to a niobium-rich pyrochlore in the nepheline syenite of the complex. The complex consists of an aegirine-phlogopite pyroxenite that has been intruded and partly replaced by nepheline syenite. The contact zone between the two igneous units varies from a...
Water-quality reconnaissance of lakes in Voyageurs National Park, Minnesota
G. A. Payne
1979, Open-File Report 79-556
Water samples were collected from three lakes in Voyageurs National Park to assess chemical and biological water quality in March and August 1977. Bottom material samples were also collected and analyzed for chemical quality. Results of the analyses show that the water system was dilute; specific conductance ranged from 32...
