Bulk densities and porosities of Cenozoic and Cretaceous basin-filling strata and Cretaceous and older basement rocks, Los Angeles Basin, California, determined from measurements of core samples
L. A. Beyer, T. H. McCulloh
1998, Open-File Report 98-788
This report describes and provides a digital data file of selected bulk properties of subsurface rocks sampled in and around Los Angeles basin, California. Selected properties include measured dry bulk density (range 0.78 to 3.01 g/cm3), measured or estimated grain (matrix) density, calculated water saturated bulk density (range 1.47 to...
Modified Mercalli intensities for some recent California earthquakes and historic San Francisco Bay Region earthquakes
William H. Bakun
1998, Open-File Report 98-584
Modified Mercalli Intensity (MMI) data for recent California earthquakes were used by Bakun and Wentworth (1997) to develop a strategy for bounding the location and moment magnitude M of earthquakes from MMI observations only. Bakun (Bull. Seismol. Soc. Amer., submitted) used the Bakun and Wentworth (1997) strategy to analyze 19th...
The use of well-production data in quantifying gas-reservoir heterogeneity
T. S. Dyman, J. W. Schmoker
1998, Open-File Report 98-778
Review of Aquifer Test Results for the Lansdale Area, Montgomery County, Pennsylvania, 1980–95
Daniel J. Goode, Lisa A. Senior
1998, Open-File Report 98-294
Aquifer and aquifer-isolation test results in and around North Penn Area 6 Superfund site, Lansdale, Montgomery County, Pennsylvania are reviewed to provide estimated aquifer properties for use in a numerical model of ground-water flow. This review was made to support of remedial action investigations by U.S. Environmental Protection Agency (USEPA),...
Selected hydrologic data for the central Virgin River basin area, Washington and Iron Counties, Utah, 1915-97
Christopher D. Wilkowske, Victor M. Heilweil, Dale E. Wilberg
1998, Open-File Report 98-389
Hydrologic data were collected in Washington and Iron Counties, Utah, from 1995 to 1997 to better understand the hydrologic system. Data from earlier years also are presented. Data collected from wells include well-completion data, water-level measurements, and physical properties of the water. Data collected from springs and surface-water sites include...
Selected surface-water, ground-water, and tracer data from the Elkhorn and Platte Rivers and the alluvium near Ashland, eastern Nebraska, 1991-97
Ingrid M. Verstraeten, C.P. Stanton, R.L. Atkeson
1998, Open-File Report 98-396
Supporting data for hydrologic studies in San Francisco Bay, California; meteorological measurements at the Port of Redwood City during 1995-1997
L. E. Schemel
1998, Open-File Report 98-64
Summary of the U.S. Geological Survey National Field Quality Assurance Program from 1979 through 1997
D.L. Stanley, T.M. Boozer, L.J. Schroder
1998, Open-File Report 98-392
Since the inception of the U.S. Geological Survey National Field Quality Assurance Program, over 85,000 proficiency samples have been analyzed by water-quality analysts. This includes more than 10,000 alkalinity samples, more than 15,000 pH samples, and more than 16,000 specific conductance samples, which were analyzed from 1990 through 1997, and...
Hydrologic and water-quality data from Mountain Island Lake, North Carolina, 1994-97
K.M. Sarver, B.C. Steiner
1998, Open-File Report 98-549
Continuous-record water-level gages were established at three sites on Mountain Island Lake and one site downstream from Mountain Island Dam. The water level of Mountain Island Lake is controlled by Duke Power Company releases at Cowans Ford Dam (upstream) and Mountain Island Dam (downstream). Water levels on Mountain Island Lake...
A method for producing digital probabilistic seismic landslide hazard maps: An example from the Los Angeles, California, area
Randall W. Jibson, Edwin L. Harp, John A. Michael
1998, Open-File Report 98-113
The 1994 Northridge, California, earthquake is the first earthquake for which we have all of the data sets needed to conduct a rigorous regional analysis of seismic slope instability. These data sets include (1) a comprehensive inventory of triggered landslides, (2) about 200 strong-motion records of the mainshock, (3) 1:24,000-scale...
Comparative geology and geochemistry of sedimentary-rock-hosted (Carlin Type) gold deposits in the People's Republic of China and in Nevada, USA
Zhiping Li, Stephen G. Peters
1998, Open-File Report 98-466
Sedimentary-rock-hosted (Carlin-type) gold deposits have been considered economically significant and geologically distinct since the early 1960's. This report consists of a nine-part text and an interactive database. This small database is to help Western companies get more information about these gold deposits in China, and to help geologists who are...
Digital mine claim density map for Federal lands in Montana, 1996
Harry W. Campbell, Paul C. Hyndman
1998, Open-File Report 98-489
This report describes a digital map and data files generated by the U.S. Geological Survey (USGS) to provide digital spatial mining claim information for Federal lands in Montana as of March, 1997. Statewide, 159,704 claims had been recorded with the Bureau of Land Management since 1975. Of those claims, 21,055...
Gamma-ray radioactivity data, Payette National Forest, west-central Idaho
J. A. Pitkin
1998, Open-File Report 98-219-C
GLORIA sidescan sonar field data and navigation data collected off Puerto Rico in 1985 and the eastern United States in 1987
David C. Twichell, Valerie F. Paskevich, Catherine M. Delorey
1998, Open-File Report 98-619
This CD-ROM contains copies of the navigation and field sidescan sonar data collected within the Exclusive Economic Zone (EEZ) surrounding Puerto Rico and off the eastern United States during cruises aboard the R/V FARNELLA. The survey of the Puerto Rico EEZ was completed during one cruise between...
Statistical summaries of selected Iowa streamflow data through September 1996
E.E. Fischer, D. A. Eash
1998, Open-File Report 98-170
Statistical summaries of streamflow data collected at 156 streamflow-gaging stations in Iowa are presented in this report. All gaging stations included for analysis have at least 10 years of continuous record collected before or through September 1996. The statistical summaries include (1) statistics of monthly and annual mean discharges; (2)...
Surficial geology of Shaver Hollow, Shenandoah National Park
Benjamin A. Morgan
1998, Open-File Report 98-343
At the request of Shenandoah National Park and the Department of Environmental Sciences at the University of Virginia, the US Geological Survey has completed an examination and map of the surficial deposits in Shaver Hollow. The work was carried out as part of the US Geological Survey - National Park...
Techniques for estimating peak-flow magnitude and frequency relations for South Dakota streams
Steven K. Sando
1998, Water-Resources Investigations Report 98-4055
A generalized skew coefficient analysis was completed for South Dakota to test the validity of using the generalized skew coefficient map in Bulletin 17B of the 1982 United States Water Resources Council, ?Guidelines for Determining Flood Flow Frequency.? Results of the analysis indicate that the Bulletin 17B generalized skew coefficient...
Database of significant deposits of gold, silver, copper, lead, and zinc in the United States
Keith R. Long, DeYoung Jr., Stephen Ludington
1998, Open-File Report 98-206-A,B
It has long been recognized that the largest mineral deposits contain most of the known mineral endowment (Singer and DeYoung, 1980). Sometimes called giant or world-class deposits, these largest deposits account for a very large share of historic and current mineral production and resources in industrial society (Singer, 1995). For...
Recharge-area delineation and hydrology, McCraken Springs, Fort Knox Military Reservation, Meade County, Kentucky
Charles J. Taylor, Gregory K. McCombs
1998, Water-Resources Investigations Report 98-4196
McCraken Springs, consisting of three perennial springs - Main, Bat Cave, and Rocky Springs—and several intermittent springs, are used as a source of public water by the Fort Knox Military Reservation in Meade County, Ky. The water supply provided by McCraken Springs is potentially vulnerable to natural and induced stresses...
Water-level changes (1975-98) in the Antelope Valley, California
Carl S. Carlson, Steven P. Phillips
1998, Open-File Report 98-561
Antelope Valley is in the western part of the Mojave Desert in southern California, about 50 mi northeast of Los Angeles. Between 1975 and 1998, water levels in the valley have changed in response to a shift in ground-water use from agricultural to urban, declining in some areas and rising...
Principal drill stem test database (UBDST) and documentation; analysis of Uinta Basin, Utah gas-bearing Cretaceous and Tertiary strata
J.B. Wesley, C. J. Wandrey, T. D. Fouch
1998, Open-File Report 93-193
Geologic, hydrologic, and water-quality data from selected boreholes and wells in and near Belvidere, Illinois, 1989-96
P. C. Mills, D.J. Yeskis, T. D. Straub
1998, Open-File Report 97-242
This report presents selected geologic, hydrologic, and water-quality data collected in and near Belvidere, Ill., during 1989-96. The data were collected primarily by the U.S. Geological Survey and U.S. Environmental Protection Agency in support of an ongoing ground-water study of the glacial drift aquifer and bedrock aquifers of Ordovician and...
Environmental setting of the San Joaquin-Tulare basins, California
JoAnn A. Gronberg, Neil M. Dubrovsky, Charles R. Kratzer, Joseph L. Domagalski, Larry R. Brown, Karen R. Burow
1998, Water-Resources Investigations Report 97-4205
The National Water-Quality Assessment Program for the San Joaquin-Tulare Basins began in 1991 to study the effects of natural and anthropogenic influences on the quality of ground water, surface water, biology, and ecology. The San Joaquin-Tulare Basins study unit, which covers approximately 31,200 square miles in central California, is made...
Combining satellite data with ancillary data to produce a refined land-use/land-cover map
Jana S. Stewart
1998, Water-Resources Investigations Report 97-4203
As part of the U.S. Geological Survey's National Water-Quality Assessment Program in the Western Lake Michigan Drainages Study Unit, a current map of land use and land cover is needed to gain a better understanding of how land use and land cover may influence water quality. Satellite data from the...
Geologic analysis of continuous high-resolution, seismic-reflection data from the Lincoln Point-Bird Island area, Utah Lake, Utah
R. L. Baskin, H. L. Berryhill Jr.
1998, Water-Resources Investigations Report 96-4236
No abstract available....
