In search of earthquake-related hydrologic and chemical changes along Hayward Fault
C.-Y. King, D. Basler, T. S. Presser, William C. Evans, L. D. White, A. Minissale
1994, Applied Geochemistry (9) 83-91
Flow and chemical measurements have been made about once a month, and more frequently when required, since 1976 at two springs in Alum Rock Park in eastern San Jose, California, and since 1980 at two shallow wells in eastern Oakland in search of earthquake-related changes. All sites are on or...
Two episodes of meltwater influx from glacial Lake Agassiz into the Lake Michigan basin and their climatic contrasts
Steven M. Colman, L.D. Keigwin, R. M. Forester
1994, Geology (22) 547-550
Two episodes of meltwater influx from glacial Lake Agassiz are recorded as prominent sedimentologic, isotopic, magnetic, and faunal signatures in southern Lake Michigan profundal sediments. As a tributary to the main path of eastward Lake Agassiz flow, southern Lake Michigan recorded only the largest, catastrophic discharges. The distinctive Wilmette Bed,...
Hydrogeology and simulation of ground-water flow near the Lantana Landfill, Palm Beach County, Florida
G.M. Russell, E. J. Wexler
1993, Water-Resources Investigations Report 92-4107
The Lantana landfill in Palm Beach County has a surface that is 40 to 50 feet above original ground level and consists of about 250 acres of compacted garbage and trash. Parts of the landfill are below the water table. Surface-resistivity measurements and water-quality analyses indicate that leachate-enriched ground water...
Comparison of deep structure along three transects of the western North American continental margin
Gary S. Fuis, R.M. Clowes
1993, Tectonics (12) 1420-1435
Similarities in geology and potential field data that have in the past been noted among the regions of southern Alaska, southern Vancouver Island, and central California are now seen to be accompanied by similarities in deep crustal structure. A number of tectonic elements have been identified in the deep structure...
Reconciling deep seismic refraction and reflection data from the Grenvillian-Appalachian boundary in western New England
Stephen Hughes, J.H. Luetgert, N.I. Christensen
1993, Tectonophysics (225) 255-269
The Grenvillian-Appalachian boundary is characterized by pervasive mylonitic deformation and retrograde alteration of a suite of imbricated allochthonous and parautochthonous gneisses that were thrust upon the Grenvillian continental margin during the lower Paleozoic. Seismic reflection profiling across this structural boundary zone reveals...
Hydrology of the Estancia Basin, central New Mexico
R.R. White
1993, Water-Resources Investigations Report 93-4163
The Estancia Basin of central New Mexico is a topographically closed basin that ranges in altitude from 6,000 feet to more than 10,000 feet above sea level. In the center of the basin a valley-fill aquifer of Quaternary age is as much as 400 feet thick. Limestone of the Madera...
Mineral resource assessment of rare-earth elements, thorium, titanium, and uranium in the Greenville 1° x 2° quadrangle, South Carolina, Georgia, and North Carolina
Frank G. Lesure, Gary C. Curtin, David L. Daniels, John C. Jackson
1993, Miscellaneous Field Studies Map 2198-E
Mineral resources of the Greenville 1° x 2° quadrangle, South Carolina, Georgia, and North Carolina, were assessed between 1984 and 1990 under the Conterminuous United States Mineral Assessment Program (CUSMAP) of the U.S. Geological Survey (USGS). The mineral resource assessments were made on the basis of geologic, geochemical, and geophysical...
Logs of exploratory trenches through liquefaction features on late Quaternary terraces in the Obion River Valley, northwestern Tennessee
Donald T. Rodbell, Lee-Ann Bradley
1993, Miscellaneous Field Studies Map 2218
From December 1811 to February 1812, four large earthquakes (mb≥7.0) occurred in the New Madrid (Missouri) Seismic Zone (NMSZ). These have been the largest historical earthquakes in eastern North America. Although this area has been the focus of considerable seismological research, estimates of the repeat time of large-magnitude seismic events...
Mineralogical maps showing distribution of selected ore-related minerals in the nonmagnetic, heavy-mineral-concentrate fraction of stream sediment from the Mount Hayes 1 degree by 3 degrees Quadrangle, eastern Alaska Range, Alaska
Richard B. Tripp, Gary C. Curtin, Warren J. Nokleberg, David L. Huston, James R. Hampton
1993, Miscellaneous Field Studies Map 1996-E
Exploratory geochemical sampling was done in 1979, 1980, and 1981. The collection of composite samples of stream sediment or glacial debris was emphasized the first 2 years; the last year was spent collecting mineralized stream pebbles, float, and outcrop samples. The stream-sediment and heavy- mineral-concentrate samples were collected at 795...
Middle Eocene intrusive igneous rocks of the central Appalachian Valley and Ridge province - Setting, chemistry, and implications for crustal structure
C. Scott Southworth, Karen J. Gray, John F. Sutter
1993, Bulletin 1839-J
No abstract available....
Petroleum exploration plays and resource estimates, 1989, onshore United States; Region 1, Alaska; Region 2, Pacific Coast
Richard B. Powers, editor(s)
1993, Bulletin 2034-A
This study provides brief discussions of the petroleum geology, play descriptions, and resource estimates of 220 individually assessed exploration plays in all 80 onshore geologic provinces within nine assessment regions of the continental United States in 1989; these 80 onshore provinces were assessed in connection with the determination of the...
Water Resources Data, New York, Water Year 1992; Volume 1. Eastern New York; Excluding Long Island
Gary D. Firda, Richard Lumia, Patricia M. Murray
1993, Water Data Report NY-92-1
Water resources data for the 1992 water year for New York consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and ground water levels. This volume contains records for water discharge at 111 gaging stations; stage only at 4...
Geologic map of the Palo Alto and part of the Redwood Point 7-1/2' quadrangles, San Mateo and Santa Clara Counties, California
Earl H. Pampeyan
1993, IMAP 2371
The Palo Alto and southern part of the Redwood Point 7-1/2' quadrangles cover an area on the San Francisco peninsula between San Francisco Bay and the Santa Cruz Mountains. San Francisquito and Los Trancos Creeks, in the southeastern part of the map area, form the boundary between San Mateo and...
Structure and stratigraphy of Upper Cretaceous and Paleogene strata (North Horn Formation), eastern San Pitch Mountains, Utah — Sedimentation at the front of the Sevier orogenic belt
Timothy F. Lawton, Peter J. Talling, Robert S. Hobbs, James H. Trexler Jr., Malcolm P. Weiss, Douglas W. Burbank
1993, Bulletin 1787-II
No abstract available....
Surface vitrinite reflectance study of the Uinta and Piceance basins and adjacent areas, eastern Utah and western Colorado — Implications for the development of Laramide basins and uplifts
Ronald C. Johnson, Vito F. Nuccio
1993, Bulletin 1787-DD
No abstract available....
Water resources and the hydrologic effects of coal mining in Washington County, Pennsylvania
Donald R. Williams, John K. Felbinger, Paul J. Squillace
1993, Open-File Report 89-620
Washington County occupies an area of 864 square miles in southwestern Pennsylvania and lies within the Pittsburgh Plateaus Section of the Appalachian Plateaus physiographic province. About 69 percent of the county population is served by public water-supply systems, and the Monongahela River is the source for 78 percent of the...
Historical saturated thickness of the Edwards-Trinity aquifer system and selected contiguous hydraulically connected units, west-central Texas
Ann F. Ardis, Rene A. Barker
1993, Water-Resources Investigations Report 92-4125
The Edwards-Trinity Regional Aquifer-System Analysis (RASA) is one of 25 completed or ongoing studies conducted by the U.S. Geological Survey on regional aquifer systems that individually provide essential quantities of ground water to large parts of the country. Underlying about 42,000 mi2 of west-central Texas, the Edwards-Trinity aquifer system extends...
Properties and chemical constituents in ground water from the middle Wilcox aquifer, Gulf Coast regional aquifer systems, south-central United States
Robert A. Pettijohn, John F. Busby, Jeffery D. Beckman
1993, Water-Resources Investigations Report 93-4070
The Gulf Coast Regional Aquifer-System Analysis is a study of regional aquifers composed of sediments of mostly Cenozoic age that underlie about 230,000 sq mi of the Gulf Coastal Plain. These regional aquifers are part of three aquifer systems: (1) the Mississippi Embayment Aquifer System, (2) the Texas Coastal Uplands...
Properties and chemical constituents in ground water from the lower Wilcox Aquifer, Mississippi Embayment Aquifer System, south-central United States
Robert A. Pettijohn, John F. Busby, Jeffery D. Beckman
1993, Water-Resources Investigations Report 93-4071
The Gulf Coast Regional Aquifer-System Analysis is a study of regional aquifers composed of sediments of mostly Cenozoic age that underlie about 230,000 sq mi of the Gulf Coastal Plain. These regional aquifers are part of three aquifer systems: (1) the Mississippi Embayment Aquifer System, (2) the Texas Coastal Uplands...
Map showing thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains; northeastern states, the Great Lakes, and parts of southern Ontario and the Atlantic offshore area (east of 80 degrees 31 minutes west longitude)
D. R. Soller
1993, IMAP 1970-A
No abstract available....
Geologic map of the Dillon 1° x 2° quadrangle, Idaho and Montana
E. T. Ruppel, D. A. Lopez, J.M. O’Neill
1993, IMAP 1803-H
The digital ARC/INFO databases included in this website provide a GIS database for the geologic map of the Dillon 1 degree by 2 degree quadrangle of southwest Montana and east-central Idaho. The geologic map was originally published as U.S. Geological Survey Miscellaneous Investigations Series Map I-1803-H. This website...
Paleozoic and Mesozoic rocks of Mount Ichabod and Dorsey Canyon, Elko County, Nevada: Evidence for post-Early Triassic emplacement of the Roberts Mountains and Golconda allochthons
Keith B. Ketner, Benita L. Murchey, Robert G. Stamm, Bruce R. Wardlaw
1993, Bulletin 1988-D
No abstract available....
Geologic map of the MTM 25057 and 25052 quadrangles, Kasei Valles region of Mars
David H. Scott
1993, IMAP 2208
Kasei Valles (fig. 1) make up the largest system of outflow channels on Mars and were a major contributor of water to Chryse Planitia. The walls and floors of the Kasei channe<span...
Saltwater in shallow aquifers in east-central and northeastern Louisiana and southeastern Arkansas
G. F. Huff, J.P. Bonck
1993, Open-File Report 93-494
The chemistry of water from irrigation and monitor wells in east-central Louisiana indicates the presence of saltwater in the Mississippi River alluvial aquifer and the uppermost part of the Jasper aquifer system. The salinity of this groundwater makes it unsuitable for use in irrigation of salt-sensitive crops. The geochemistry of...
Potential of hot-dry-rock geothermal energy in the Eastern United States
J.H. Sass
1993, Open-File Report 93-377
