Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

10961 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 316, results 7876 - 7900

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
A pilot study for delineation of areas contributing water to wellfields at Jackson, Tennessee
R. E. Broshears, J. F. Connell, N. C. Short
1991, Water-Resources Investigations Report 89-4201
The U.S. Geological Survey, in cooperation with the Tennessee Department of Health and Environment, Division of Groundwater Protection, and the Jackson Utility Division, conducted a pilot study to determine data needs and the applicability of four methods for the delineation of wellhead protection areas. Jackson Utility Division in Jackson, Madison...
Element dispersion in alluvium covering gold deposits east of the Osgood Mountains, Getchell Trend, Humboldt County, Nevada: slides and text of a talk given at the Association of Exploration Geochemists' 15th International Geochemical Exploration Symposium, Reno, Nevada
Steven M. Smith, David E. Detra, Paul K. Theobald, Peter M. Theodorakos
1991, Open-File Report 91-599
The current trend in mineral exploration is to search for covered deposits. In the Great Basin, this translates into searching for ore bodies buried by alluvial cover. The exploration techniques used range from random drilling to the use of new and exciting geochemical sampling media and analytical methods. But we have a problem....
Geohydrology and evaluation of water-resource potential of the Upper Floridan aquifer in the Albany area, southwestern Georgia
Lynn J. Torak, G. S. Davis, George A. Strain, Jennifer G. Herndon
1991, Open-File Report 91-52
In the Albany area of southwestern Georgia, the Upper Floridan aquifer lies entirely within the Dougherty Plain district of the Coastal Plain physiographic province, and consists of the Ocala Limestone of late Eocene age. The aquifer is divided throughout most of the study area into an upper and a lower...
Hydrology of the Texas Gulf Coast aquifer systems
Paul D. Ryder, Ann F. Ardis
1991, Open-File Report 91-64
A complex, multilayered ground-water flow system exists in the Coastal Plain sediments of Texas. The Tertiary and Quaternary clastic deposits have an areal extent of 114,000 square miles onshore and in the Gulf of Mexico. Two distinct aquifer systems are recognized within the sediments, which range in thickness from a...
Earth-fissure movements associated with fluctuations in ground-water levels near the Picacho Mountains, south-central Arizona, 1980-84
Michael C. Carpenter
1991, Open-File Report 90-561
The Picacho earth fissure transects subsiding alluvial sediments near the east periphery of the Picacho basin in south-central Arizona. The basin has undergone land subsidence of as much as 3.8 meters since the 1930's owing to compaction of the aquifer system in response to ground-water-level declines that have exceeded 100...
Physical, chemical, and biological data for detailed study of irrigation drainage in the Middle Green River basin, Utah 1988-89, with selected data for 1982-87
Lorri A. Peltz, Bruce Waddell
1991, Open-File Report 91-530
Physical, chemical, and biological data were collected in the middle Green River basin, eastern Utah, between 1988 and 1989, as part of a detailed study of the effects of irrigation drainage on wetland areas. Data-collection efforts were concentrated in the Stewart Lake Waterfowl Management Area near Jensen, and Ouray National...
Floods in the Nishnabotna River basin, Iowa
D. A. Eash, A.J. Heinitz
1991, Open-File Report 91-171
Flood-elevation profiles and flood-peak discharges for floods during 1972, 1982, and 1987 in the Nishnabotna River basin are given in this report. The profiles are for the 1972 flood on the West and East Nishnabotna Rivers, the 1982 flood on Indian Creek, and the 1987 flood on the lower West...
Effects of site, landscape features, and fire regime on vegetation patterns in presettlement southern Wisconsin
Lawrence A. Leitner, Christopher P. Dunn, Glenn R. Guntenspergen, F. Stearns, David M. Sharpe
1991, Landscape Ecology (5) 203-217
The presettlement tree cover (1831–33) of 3 townships in a southern Wisconsin landscape was analyzed using original survey records. Four forest types were identified: closed forest, open forest, savanna, and prairie. Comparisons of vegetation types and landscape pattern were made between the east and west sides of the Pecatonica River,...
E-4 Central Kentucky to the Carolina Trough
Douglas W. Rankin, William P. Dillon, D.F.B. Black, S.E. Boyer, David L. Daniels, R. Goldsmith, J. A. Grow, J. Wright Horton Jr., Deborah R. Hutchinson, Kim D. Klitgord, R. C. McDowell, D.J. Milton, J. P. Owens, Jeffrey D. Phillips, K.C. Bayer, John R. Butler, D.W. Elliott, Robert C. Milici
1991, Book
E-4 is one of eight Geodynamics transects that cross the Atlantic margin of North America between Georgia and Newfoundland. Five of the transects are in the United States and three are in Canada. Transect E-4, which is 110 km wide and more than 1,100 km long, extends from the stable...
Depositional patterns of the Mississippi Fan surface: Evidence from GLORIA II and high-resolution seismic profiles
David C. Twichell, Neil H. Kenyon, Lindsay M. Parson, Bonnie A. McGregor
1991, Book chapter
GLORIA long-range side-scan sonar imagery and 3.5-kHz seismic-reflection profiles depict a series of nine elongate deposits with generally high-backscatter surfaces covering most of the latest fanlobe sequence of the Mississippi Fan in the eastern Gulf of Mexico. The youngest deposit is a “slump” that covers a 250 by 100 km...
The velocity field along the San Andreas Fault in central and southern California
Michael Lisowski, James C. Savage, W.H. Prescott
1991, Journal of Geophysical Research B: Solid Earth (96) 8369-8389
The velocity field within a 100‐km‐broad zone centered on the San Andreas fault between the Mexican border and San Francisco Bay has been inferred from repeated surveys of trilateration networks in the 1973–1989 interval. The velocity field has the appearance of a shear flow that remains parallel to the local...
Late Devonian history of Michigan basin
R.C. Gutschick, Charles Sandberg
1991, Special Paper of the Geological Society of America (256) 181-202
The Upper Devonian sequence in the Michigan Basin is a westward extension of coeval cyclical facies of the Catskill deltaic complex in the Appalachian basin. Both basins and the intervening Findlay arch express the tectonic and sedimentational effects of foreland compression and isostatic compensation produced by the Acadian orogeny. The...
Upper Devonian biostratigraphy of Michigan Basin
R.C. Gutschick, Charles Sandberg
1991, GSA Special Papers (256) 179
The Late Devonian Michigan Basin was floored by the Middle and Upper Devonian Squaw Bay Limestone, which was deposited during the downwarping that produced the basin within a former Middle Devonian carbonate platform. The Squaw Bay comprises three beds, each having a different conodont fauna. The two upper beds, deposited...
The Loma Prieta earthquake, ground motion, and damage in Oakland, Treasure Island, and San Francisco
Thomas C. Hanks, A. Gerald Brady
1991, Bulletin of the Seismological Society of America (81) 2019-2047
The basis of this study is the acceleration, velocity, and displacement wave-forms of the Loma Prieta earthquake (18 October 1989; M = 7.0) at two rock sites in San Francisco, a rock site on Yerba Buena Island, an artificial-fill site on Treasure Island, and three sites in Oakland underlain by...
Global warming and prairie wetlands: potential consequences for waterfowl habitat
Karen A. Poiani, W. Carter Johnson
1991, BioScience (41) 611-618
The accumulation of greenhouse gasses in the atmosphere is expected to warm the earth's climate at an unprecedented rate (Ramanathan 1988, Schneider 1989). If the climate models are correct, within 100 years the earth will not only be warmer than it has been during the past million years, but...
Crustal subsidence and extension and Medicine Lake volcano, northern California
Daniel Dzurisin, Julie M. Donnelly-Nolan, John R. Evans, Stephen R. Walter
1991, Journal of Geophysical Research B: Solid Earth (96) 16319-16333
The pattern of historical ground deformation, seismicity, and crustal structure near Medicine Lake volcano illustrates a close relation between magmatism and tectonism near the margin of the Cascade volcanic chain and the Basin and Range tectonic province. Between leveling surveys in 1954 and 1989 the summit of Medicine Lake volcano...
Rare earth elements in Japan Sea sediments and diagenetic behavior of Ce/Ce∗: results from ODP Leg 127
R. Murray, Marilyn R. Buchholtz ten Brink, Hans-Juergen Brumsack, David C. Gerlach, G. Price Russ
1991, Geochimica et Cosmochimica Acta (55) 2453-2466
The relative effects of paleoceanographic and paleogeographic variations, sediment lithology, and diagenetic processes on the recorded rare earth element (REE) chemistry of Japan Sea sediments are evaluated by investigating REE total abundances and relative fractionations in 59 samples from Ocean Drilling Program Leg 127. REE total abundances (ΣREE) in the Japan...