Hydrogeology of the observation well site at the United States Geological Survey National Center, Reston, Virginia
J. D. Larson
1978, Open-File Report 78-144
The U. S. Geological Survey's National Center is on a 105-acre tract straddling rocks of two distinct types. These are pelitic schists of late Precambrian and early Paleozoic age; and sandstone, shale, siltstone, and conglomerate of Triassic age. Within the Triassic part is a diabase dike and an associated contact...
Direct solution algorithm for the two-dimensional ground-water flow model
S. P. Larson
1978, Open-File Report 79-202
Mahd adh Dhahab: Precambrian epithermal gold deposit in Saudi Arabia
Robert W. Luce, James R. O’Neil, Robert O. Rye
1978, Open-File Report 78-388
No abstract available....
Preparation of a geologic photo map and hydrologic study of the Yemen Arab Republic
Maurice J. Grolier, M. Ibrahim, W.C. Overstreet, G. Chase Tibbitts, D.F. Davidson
1978, Open-File Report 78-770
Floodflow analysis of Ninemile Creek, Onondaga County, New York
Richard Lumia, Bernard Dunn
1978, Open-File Report 78-85
A flood-stage and discharge analysis was made for a 3.61 mile reach of Ninemile Creek between Amboy and Camillus. Water-surface profiles were developed for 50-year, 100-year, and September 26, 1975 flood discharges at Camillus for four different channel conditions: (1) with four culverts at Camillus bypass and a bridge at...
Effects of converting sagebrush cover to grass on the hydrology of small watersheds at Boco Mountain, Colorado
Gregg C. Lusby
1978, Open-File Report 78-289
Changes in runoff and sediment yield caused by changing sagebrush cover to grass cover were studied at four small watersheds in western Colorado during a 9-year period. Measurements of runoff and sediment yield from four watersheds were made for 3 years, at which time two watersheds were plowed and seeded...
Effects of grazing on runoff and sediment yield from desert rangeland at Badger Wash in western Colorado, 1953-73
Gregg C. Lusby
1978, Open-File Report 78-165
Four different systems of livestock management were compared hydrologically during a 20-year study (November 1953-November 1973) in western Colorado. These systems were grazing by cattle and sheep from November 15 to May 15 each year, complete elimination of grazing, grazing by sheep from November 15 to February 15 each year,...
Gold, base-metal, and related deposits of North Carolina
Gwendolyn Werth Luttrell
1978, Open-File Report 78-152
Gold, silver, copper, lead, zinc, pyrite, tin, cobalt, molybdenum, tungsten, barite, and rare-earths have been mined in North Carolina. Gold, with by-product silver, occurs in veins and mineralized shear zones in metamorphic rocks of the Piedmont province and in placers derived from these deposits. Copper occurs with complex sulfide ores...
One and two dimension seismic modeling
Myung W. Lee
1978, Open-File Report 78-270
Selected data from thermal-spring areas, southwestern Montana
Robert B. Leonard, Tordis M. Brosten, Norman A. Midtlyng
1978, Open-File Report 78-438
During 1975-77 the Montana district of the U.S. Geological Survey collected and assembled data describing the flow, temperature, and chemical characteristics of thermal and related waters. The work was part of an assessment of the geothermal resources of southwestern Montana, excluding Yellowstone Park. The purpose of this report is to...
Water-quality investigation near the Chico and Hunters geothermal lease-application areas, Park and Sweet Grass counties, Montana
Robert B. Leonard, Ronald R. Shields, Norman A. Midtlyng
1978, Open-File Report 78-199
Water quality in and adjacent to geothermal lease-application areas near Chico and Hunters Hot Springs was investigated during two surveys in October 1976 and April 1977. The resulting data were needed to evaluate the effects of proposed geothermal exploration and development on the Yellowstone River and its tributaries.Waters from the...
Gravity and aeromagnetic anomalies in the Rexburg area of eastern Idaho
Don R. Mabey
1978, Open-File Report 78-382
Regional and local networks of horizontal control, Cerro Prieto geothermal area, Mexico
Bruce L. Massey
1978, Open-File Report 78-929
The Cerro Prieto geothermal area in the Mexicali Valley 30 km southeast of Mexicali, Baja California, is probably deforming due to (1) the extraction of large volumes of steam and hot water, and (2) active tectonism. Two networks of precise horizontal control were established in Mexicali Valley by the U.S....
Geologic map of the Louisa Quadrangle, Kentucky-West Virginia
Carol Waite Connor, Romeo M. Flores
1978, Open-File Report 78-158
Reconnaissance map showing relative amounts of soil and bedrock in the Buckhorn Mountain quadrangle, Larimer County, Colorado
P. W. Schmidt
1978, Miscellaneous Field Studies Map 996
No abstract available....
Sonobuoy refraction data near Kodiak, Alaska
Mark L. Holmes, Charles A. Meeder, Kenneth Clark Creager
1978, Open-File Report 78-368
A total of 88 unreversed sonobuoy refraction lines were shot over the continental shelf and slope near Kodiak, Alaska, in 1976 and 1977. Useful results were obtained from 59 of these attempts. The field measurements were carried out aboard the USGS research vessel SAMUEL P. LEE. The refraction lines were...
Analyses and description of geochemical samples, Mill Creek Wilderness Study Area, Giles County, Virginia
Leung Mei, Frank Gardner Lesure
1978, Open-File Report 78-1077-D
Semiquantitative emission spectrographic analyses for 64 elements on 62 stream sediment and 71 rock samples from Mill Creek Wilderness Study area, Giles County, Virginia, are reported here in detail. Locations for all samples are given in Universal Transverse Mercator (UTM) coordinates. Brief descriptions of rock samples are also included. Rocks...
Telluric profile location map and telluric data for the Saline Valley Known Geothermal Resource Area, California
Donald B. Hoover, D.L. Fisher, Bruce Radtke
1978, Open-File Report 78-106-B
No abstract available. ...
Drainage areas of streams in Arkansas--Red River basin
Marion S. Hines, John J. Yanchosek
1978, Open-File Report 78-555
Drainage areas, determined in accordance with procedures recommended by the Subcommittee on Hydrology of the Federal Inter-Agency River Basin Committee, are listed for points on streams in the Red River basin in Arkansas. Points on the streams are identified by some topographic feature and by latitude and longitude....
Audio-magnetotelluric data log for Cedarville, California, 15-minute Quadrangle
Donald B. Hoover, Susan Gardner, Jackie M. Williams
1978, Open-File Report 78-105-B
No abstract available. ...
Preliminary map showing structural fabric of central Kentucky and part of Ohio
Douglas F. B. Black
1978, Open-File Report 78-454
Low-flow characteristics of Oklahoma streams
Thomas L. Huntzinger
1978, Open-File Report 78-166
Analysis of streamflow records in Oklahoma has provided information on the low-flow characteristics of selected streams in Oklahoma. The 2-, 10- and 20-year low-flow frequency for 1-, 7-, 14- and 30-day durations have been determined for 143 continuous record stations, 46 partial record, and 56 miscellaneous sites in Oklahoma. Low-flows...
Relative concentration of lanthanides in titanite (sphene)
Michael Fleischer
1978, Open-File Report 78-530
No abstract available....
Documentation of potential for surface faulting related to ground-water withdrawal in Las Vegas Valley, Nevada
Thomas L. Holzer
1978, Open-File Report 78-79
Leveling data collected in Las Vegas Valley are compatible with the interpretation that ongoing land-surface displacements related to ground-water withdrawal may be precursory to fault offset of the land surface. Zones of potential faulting intersect regions of intense urban development. The degree of risk and the potential economic consequences from...
Principal facts for gravity observations in the Coso Hot Springs area, California
William F. Isherwood, Donald Plouff
1978, Open-File Report 78-298
Gravity observations were made at 292 locations in the Coso Hot Springs area, California (figs. 1 and 2). The field work was completed during June 1976 by William F. Isherwood and Jerry H. Hassemer using LaCoste-Romberg Gravity Meters G-131 and G-159. The purpose of the gravity survey is to provide...
