Surficial geologic map along the Castle Mountain Fault between Houston and Hatcher Pass Road, Alaska
Peter J. Haeussler
1998, Open-File Report 98-480
The surficial geology of the map area is dominated by sedimentary deposits laid down during and after the Naptowne glaciation (Karlstrom, 1964) of late Pleistocene age. During this episode, a large valley glacier flowed westward down the Matanuska Valley along the southern flank of the Talkeetna Mountains. The youngest of...
Hydrogeology and simulation of ground-water flow in the Sandstone Aquifer, northeastern Wisconsin
T.D. Conlon
1998, Water-Resources Investigations Report 97-4096
Municipalities in the lower Fox River Valley in northeastern Wisconsin obtain their water supply from a series of permeable sandstones and carbonates of Cambrian to Ordovician age. Withdrawals from this "sandstone aquifer" have resulted in water levels declining at a rate of more than 2 feet per year. The U.S....
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...
Cenozoic deformation of the Franciscan Complex, eastern Santa Maria Basin, California. Regional thermal maturity of surface rocks, onshore Santa Maria Basin and Santa Barbara-Ventura Basin area, California
Arthur D. Wahl, Nancy D. Naeser, Caroline M. Isaacs, Margaret A. Keller
1998, Bulletin 1995-W,X
No abstract available....
Occurrence of nitrate and pesticides in ground water beneath three agricultural land-use settings in the eastern San Joaquin Valley, California, 1993-1995
Karen R. Burow, Jennifer L. Shelton, Neil M. Dubrovsky
1998, Water-Resources Investigations Report 97-4284
The processes that affect nitrate and pesticide occurrence may be better understood by relating ground-water quality to natural and human factors in the context of distinct, regionally extensive, land- use settings. This study assesses nitrate and pesticide occurrence in ground water beneath three agricultural land-use settings in the eastern San...
Water quality assessment of the San Joaquin-Tulare basins, California: Analysis of available data on nutrients and suspended sediment in surface water, 1972-1990
Charles R. Kratzer, Jennifer L. Shelton
1998, Professional Paper 1587
Nutrients and suspended sediment in surface water of the San Joaquin-Tulare basins in California were assessed using 1972-1990 data from the U.S. Geological Survey's National Water Information System and the U.S. Environmental Protection Agency's STOrage and RETrieval database. Loads of nutrients and suspended sediment were calculated at several sites and...
Concepts for monitoring water quality in the Spokane River Basin, northern Idaho and eastern Washington
M.A. Beckwith
1998, Open-File Report 98-534
Numerous environmental studies have been conducted in the Spokane River Basin over the past several decades by government agencies, academic institutions, and environmental engineering firms. Most of these efforts have focused on the environmental effects of more than a century of silver, lead, and zinc mining and oreprocessing activities in the South Fork Coeur d'Alene River valley in...
Preliminary report on water quality associated with the abandoned Fontana and Hazel Creek Mines, Great Smoky Mountains National Park, North Carolina and Tennessee
R.R. Seal II, J. M. Hammarstrom, C.S. Southworth, A. L. Meier, D.P. Haffner, A. P. Schultz, G.S. Plumlee, M.J. Flohr, J.C. Jackson, S. M. Smith, P. L. Hageman
1998, Open-File Report 98-476
Geologic map of Paleozoic rocks in the Calico Hills, Nevada Test Site, southern Nevada
James C. Cole, Patricia H. Cashman
1998, Open-File Report 98-101
The Calico Hills area in the southwestern part of the Nevada Test Site, Nye County, Nevada, exposes a core of pre-Tertiary rocks surrounded by middle Miocene volcanic strata. This map portrays the very complex relationships among the pre-Tertiary stratigraphic units of the region. The Devonian and Mississippian rocks of the...
Hydrogeology and sources of recharge to the Buffalo and Wahpeton aquifers in the southern part of the Red River of the North drainage basin, west-central Minnesota and southeastern North Dakota
Michael Schoenberg
1998, Water-Resources Investigations Report 97-4084
Declining hydraulic heads in the Buffalo and Wahpeton aquifers are of concern to the Minnesota Department of Natural Resources and local water managers because of limited groundwater resources in the southern part of the Red River of the North drainage basin. The U.S. Geological Survey, in cooperation with the Minnesota...
Geohydrology and simulated ground-water flow in northwestern Elkhart County, Indiana
L. D. Arihood, D.A. Cohen
1998, Water-Resources Investigations Report 97-4204
In 1994, the U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency and the City of Elkhart, developed a ground-water model of the Elkhart, Indiana, area to determine the avail-ability and source of water at potential new well fields. The modeled area covered 190 square miles of northwestern...
National water-quality assessment of the Lake Erie-Lake St. Clair Basin, Michigan, Indiana, Ohio, Pennsylvania, and New York — Environmental and hydrologic setting
G. D. Casey, Donna N. Myers, D. P. Finnegan, Michael E. Wieczorek
1998, Water-Resources Investigations Report 97-4256
The Lake Erie-Lake St. Clair Basin covers approximately 22,300 mi2 (square miles) in parts of Indiana, Michigan, Ohio, Pennsylvania, and New York. Situated in two major physiographic provinces, the Appalachian Plateaus and the Central Lowland, the basin includes varied topographic and geomorphic features that affect the hydrology. As of 1990,...
Stratiform zinc-lead mineralization in Nasina assemblage rocks of the Yukon-Tanana Upland in east-central Alaska
Cynthia Dusel-Bacon, Jason R. Bressler, Hidetoshi Takaoka, James K. Mortensen, Douglas H. Oliver, Joel S. Leventhal, Rainer J. Newberry, Thomas K. Bundtzen
1998, Open-File Report 98-340
The Yukon-Tanana Upland of east-central Alaska and Yukon comprises thrust sheets of ductilely deformed metasedimentary and metaigneous rocks of uncertain age and origin that are overlain by klippen of weakly metamorphosed oceanic rocks of the Seventymile-Slide Mountain terrane, and intruded by post-kinematic Early Jurassic, Cretaceous and Tertiary granitoids. Metamorphosed continental...
Aeromagnetic survey of parts of the Black River Lake, Eau Claire, Hastings, Stillwater, and Winona 1:100,000 quadrangles in Wisconsin, south-east sheet
Water Resources Division, U.S. Geological Survey
1998, Open-File Report 98-433
No abstract available....
Digital Geologic Map of the Rosalia 1:100,000 Quadrangle, Washington and Idaho: A Digital Database for the 1990 S.Z. Waggoner Map
Pamela D. Derkey, Bruce R. Johnson, Beatrice B. Lackaff, Robert E. Derkey
1998, Open-File Report 98-357
The geologic map of the Rosalia 1:100,000-scale quadrangle was compiled in 1990 by S.Z. Waggoner of the Washington state Division of Geology and Earth Resources. This data was entered into a geographic information system (GIS) as part of a larger effort to create regional digital geology for the Pacific Northwest....
Sulfur dioxide emission rates of Kilauea Volcano, Hawaii, 1979-1997
Tamar Elias, A. J. Sutton, J. B. Stokes, T. J. Casadevall
1998, Open-File Report 98-462
Sulfur dioxide (SO2) emission rates from Kilauea Volcano were first measured by Stoiber and Malone (1975) and have been measured on a regular basis since 1979 (Casadevall and others, 1987; Greenland and others, 1985; Elias and others, 1993; Elias and Sutton, 1996). The purpose of this report is to present...
Biostratigraphy and physical stratigraphy of the USGS-Cannon Park core (CHN-800), Charleston County, South Carolina
Laurel M. Bybell, Kevin J. Conlon, Lucy E. Edwards, N. O. Frederiksen, Gregory Gohn, Jean Self-Trail
1998, Open-File Report 98-246
No abstract avavilable....
Lithostratigraphy, petrography, biostratigraphy, and strontium-isotope stratigraphy of the surficial aquifer system of western Collier County, Florida
Lucy E. Edwards, S.D. Weedman, Kathleen Simmons, T.M. Scott, G. L. Brewster-Wingard, S. E. Ishman, N.M. Carlin
1998, Open-File Report 98-205
In 1996, seven cores were recovered in western Collier County, southwestern Florida, to acquire subsurface geologic and hydrologic data to support ground-water modeling efforts. This report presents the lithostratigraphy, X-ray diffraction analyses, petrography, biostratigraphy, and strontium-isotope stratigraphy of these cores. The oldest unit encountered in the study cores is an...
Geology of the Black Mingo Group (Paleocene) in the Kingstree and St. Stephen areas of South Carolina
Robert E. Weems, Laurel M. Bybell
1998, Transactions of the American Philosophical Society (88) 9-27
Paleocene vertebrate remains from the areas of Kingstree and St. Stephen, South Carolina, come from the Rhems and Williamsburg formations of the Black Mingo Group. Sedimentary textures and fossils indicate that both units accumulated in shallow, nearshore marine, lagoonal, and deltaic depositional environments. Calcareous nannofossils and dinoflagellates indicate that the...
Loose-coupling a cellular automaton model and GIS: Long-term urban growth prediction for San Francisco and Washington/Baltimore
Keith Clarke, Leonard Gaydos
1998, International Journal of Geographical Information Science (12) 699-714
Prior research developed a cellular automaton model, that was calibrated by using historical digital maps of urban areas and can be used to predict the future extent of an urban area. The model has now been applied to two rapidly growing, but remarkably different urban areas: the San Francisco Bay...
Effects of climatic variation on field metabolism and water relations of desert tortoises
B.T. Henen, C.C. Peterson, I.R. Wallis, K.H. Berry, K.A. Nagy
1998, Oecologia (117) 365-373
We used the doubly labeled water method to measure the field metabolic rates (FMRs, in kJ kg−1 day−1) and water flux rates (WIRs, in ml H2O kg−1 day−1) of adult desert tortoises (Gopherus agassizii) in three parts of the Mojave Desert in California over a 3.5-year period, in order to develop insights into...
Preliminary results from the investigation of the Pymatuning earthquake of September 25, 1998
John Armbruster, Henry Barton, Paul Bodin, Theodore Buckwalter, Jon Cox, Edward Cranswick, James Dewey, Gary Fleeger, Margaret Hopper, Stephen Horton, Donald Hoskins, Deborah Kilb, Mark Meremonte, Ann Metzger, Dennis Risser, Leonardo Seeber, Kaye Shedlock, Katherine Stanley, Mitchell Withers, Madeleine Zirbes
1998, Pennsylvania Geology (29) 2-14
The Pymatuning earthquake occurred on Friday, September 25, 1998, at 19:52:52 Universal Coordinated Time (UTC), or 3:52:52 p.m. EDT, near Jamestown, Pa., at the southern end of the Pymatuning Reservoir, which straddles the Ohio-Pennsylvania border. The National Earthquake Information Center (NEIC) determined that the event had a magnitude of 5.2...
Downstream effects of dams on channel geometry and bottomland vegetation: Regional patterns in the Great Plains
Jonathan M. Friedman, W. R. Osterkamp, M. L. Scott, G.T. Auble
1998, Wetlands (18) 619-633
The response of rivers and riparian forests to upstream dams shows a regional pattern related to physiographic and climatic factors that influence channel geometry. We carried out a spatial analysis of the response of channel geometry to 35 dams in the Great Plains and Central Lowlands, USA....
Remagnetization of Cretaceous forearc strata on Santa Margarita and Magdalena Islands, Baja California Sur: Implications for northward transport along the California margin
Jonathan T. Hagstrum, R.L. Sedlock
1998, Tectonics (17) 872-882
Paleomagnetic data for two sections of Cretaceous forearc strata with different structural attitudes on Santa Margarita and Magdalena Islands in Baja California Sur, Mexico, indicate that these rocks have been remagnetized, probably during the late Cenozoic. The in situ paleomagnetic directions, however, are similar to data from other Cretaceous rocks...
Geologic map of the Ennis 30' x 60' quadrangle, Gallatin and Madison Counties, Montana
Karl S. Kellogg, Van S. Williams
1998, Open-File Report 97-851
The Ennis 1:100,000 quadrangle lies within both the Laramide (Late Cretaceous to early Tertiary) foreland province of southwestern Montana and the northeastern margin of the middle to late Tertiary Basin and Range province. The oldest rocks in the quadrangle are Archean high-grade gneiss, and granitic to ultramafic intrusive rocks that...
