Hydrogeology and ground-water quality of confined aquifers in buried valleys in Rock County, Minnesota and Minnehaha County, South Dakota
R. J. Lindgren
1997, Water-Resources Investigations Report 97-4029
Confined glacial and bedrock aquifers are present within Quaternary and Cretaceous deposits that fill buried valleys incised in the Sioux Quartzite surface in Rock County, in southwestern Minnesota and Minnehaha County, South Dakota. This report describes the areal extent, thickness, water-bearing characteristics, water-supply potential, and water-quality characteristics of confined aquifers...
Pesticides in surface and ground water of the San Joaquin-Tulare basins, California: Analysis of available data, 1966 Through 1992
Joseph L. Domagalski
1997, Water Supply Paper 2468
Available pesticide data (1966-92) for surface and ground water were analyzed for the San Joaquin-Tulare Basins, California, one of 60 large hydrologic systems being studied as part of the National Water-Quality Assessment Program of the U.S. Geological Survey. Most of the pesticide data were for the San Joaquin Valley, one...
Geophysical database of the east coast of the United States; southern Atlantic margin, stratigraphy and velocity in map grids
D. R. Hutchinson, C. W. Poag, Aaron H. Johnson, Peter Popenoe, C. Wright
1997, Open-File Report 96-55
In 1990, the Naval Oceanographic Office and the U.S. Geological Survey agreed to develop a digital data base of stratigraphy and acoustic properties of sediments along the U.S. East Coast of the United States. The objective of this work was to utilize more than 25,000 km of publicly available multichannel...
Pliocene-Quaternary geology of northern New Jersey; road log and description of field stops, Sunday June 1, 1997
Ron W. Witte, Jack B. Epstein, John Wright
1997, Conference Paper, Pliocene-Quaternary geology of northern New Jersey: Guidebook - Annual reunion of the northeastern friends of the Pleistocene field conference
No abstract available....
Pliocene-Quaternary geology of northern New Jersey: Guidebook - Annual reunion of the northeastern friends of the Pleistocene field conference
Ron W. Witte, Gail M. Ashley, Jack B. Epstein, Richard K. Shaw, John Wright, Scott D. Stanford
1997, Book
No abstract available....
Effects of El Nino on streamflow, lake level, and landslide potential
Richard L. Reynolds, Michael D. Dettinger, Daniel Cayan, Doyle Stephens, Lynn M. Highland, Raymond C. Wilson
1997, Conference Paper, Impact of climate change and land use in the southwestern United States
One of the most important sources of year-to-year climate variation in the Southwest is the El Niño phenomenon of the tropical Pacific Ocean. El Niño is a natural but largely unpredictable condition that results from complex interplay among clouds and storms, regional winds, oceanic temperatures, and ocean currents along the...
Factors influencing wetland use by Canada geese
D.E. Naugle, J.S. Gleason, J.A. Jenks, K.F. Higgins, P.W. Mammenga, S.M. Nusser
1997, Wetlands (17) 552-558
Seasonal and semi-permanent wetlands in eastern South Dakota were surveyed in 1995 and 1996 to identify habitat characteristics influencing wetland use by Canada geese (Branta canadensis maxima). Position of a wetland within the landscape and its area were important landscape-scale features influencing wetland use by geese. Our delineation of potential...
Arias intensity assessment of liquefaction test sites on the east side of San Francisco Bay affected by the Loma Prieta, California, earthquake of 17 October 1989
R. E. Kayen, James K. Mitchell
1997, Natural Hazards (16) 243-265
Uncompacted artificial-fill deposits on the east side of San Francisco Bay suffered severe levels of soil liquefaction during the Loma Prieta earthquake of 17 October 1989. Damaged areas included maritime-port facilities, office buildings, and shoreline transportation arteries, ranging from 65 to 85 km from the north end of the Loma...
Shallow ground-water quality beneath cropland in the Red River of the North Basin, Minnesota and North Dakota, 1993-95
Timothy K. Cowdery
1997, Water-Resources Investigations Report 97-4001
During 1993-95, the agriculture on two sandy, surficial aquifers in the Red River of the North Basin affected the quality of shallow ground water in each aquifer differently. The Sheyenne Delta aquifer, in the western part of the basin, had land-use, hydrogeological, and rainfall characteristics that allowed few agricultural chemicals...
Hydrogeology and simulation of ground-water flow in the thick regolith-fractured crystalline rock aquifer system of Indian Creek basin, North Carolina
Charles C. Daniel, Douglas G. Smith, Jo Leslie Eimers
1997, Water Supply Paper 2341-C
The Indian Creek Basin in the southwestern Piedmont of North Carolina is one of five type areas studied as part of the Appalachian Valleys-Piedmont Regional Aquifer-System analysis. Detailed studies of selected type areas were used to quantify ground-water flow characteristics in various conceptual hydrogeologic terranes. The conceptual hydrogeologic terranes are...
Significant metalliferous and selected non-metalliferous lode deposits and placer districts for the Russian Far East, Alaska, and the Canadian Cordillera
Warren J. Nokleberg, Thomas K. Bundtzen, Kenneth M. Dawson, Roman A. Eremin, Nikolai A. Goryachev, Richard D. Koch, Vladimir V. Ratkin, Ilya S. Rozenblum, Vladimir I. Shpikerman, Yuri F. Frolov, Mary E. Gorodinsky, Vladimir D. Melnikov, Michael F. Diggles, Nikolai V. Ognyanov, Eugene D. Petrachenko, Rimma I. Petrachenko, Anany I. Pozdeev, Katherina V. Ross, Douglas H. Wood, Donald Grybeck, Alexander I. Khanchuk, Lidiya I. Kovbas, Ivan Ya. Nekrasov, Anatoly A. Sidorov
1997, Open-File Report 96-513-B
No abstract available....
Modeling waves and circulation in Lake Pontchartrain, Louisiana
Richard P. Signell, Jeffrey H. List
1997, Gulf Coast Association of Geological Societies Transactions (47) 529-532
The U.S. Geological Survey is conducting a study of storm-driven sediment resuspension and transport in Lake Pontchartrain, Louisiana. Two critical processes related to sediment transport in the lake are (1) the resuspension of sediments due to wind-generated storm waves and (2) the movement of resuspended material by lake currents during...
Sea-floor geology of a part of Mamala Bay, Hawaii
Monty A. Hampton, Michael E. Torresan, John H. Barber Jr.
1997, Pacific Science (51) 54-75
We surveyed the sea-floor geology within a 200-km2 area of Mamala Bay, off Honolulu, Hawaii by collecting and analyzing sidescan sonar images, 3.5-kHz profiles, video and still visual images, and box-core samples. The study area extends from 20-m water depth on the insular shelf to 600-m water depth in a...
The paradox of nonmarine ichnofaunas in tidal rhythmites; integrating sedimentologic and ichnologic data from the Late Cretaceous of eastern Kansas, USA
Luis A. Buatois, M. Gabirela Mangano, Christopher G. Maples
1997, Palaios (12) 467-481
The occurrence of trace fossil assemblages dominated by arthropod trackways and surface grazing trails within Carboniferous tidal rhythmites has puzzled sedimentologists and ichnologists, who interpreted them either as marine or nonmarine. The Virgilian (Stephanian) Tonganoxie Sandstone Member (Stranger Formation) at Buildex Quarry (eastern Kansas) consists, for the most part, of...
Fish communities of benchmark streams in agricultural areas of eastern Wisconsin
D. J. Sullivan, E. M. Peterson
1997, Water-Resources Investigations Report 96-4038-D
Fish communities were surveyed at 20 stream sites in agricultural areas in eastern Wisconsin in 1993 and 1995 as part of the National Water-Quality Assessment (NAWQA) Program. These streams, designated "benchmark streams," were selected for study because of their potential use as regional references for healthy streams in agricultural areas,...
Geologic framework of the Edwards Aquifer and upper confining unit, and hydrogeologic characteristics of the Edwards Aquifer, south-central Uvalde County, Texas
Allan K. Clark, Ted A. Small
1997, Water-Resources Investigations Report 97-4094
The stratigraphic units of the Edwards aquifer in south-central Uvalde County generally are porous and permeable. The stratigraphic units that compose the Edwards aquifer in south-central Uvalde County are the Devils River Formation in the Devils River trend; and the West Nueces, McKnight, and Salmon Peak Formations in the Maverick...
The relation between hydrogeology and water quality of the Lower Floridan Aquifer in Duval County, Florida, and implications for monitoring movement of saline water
G. G. Phelps, R. M. Spechler
1997, Water-Resources Investigations Report 96-4242
The hydrogeology of the Upper zone of the Lower Floridan aquifer and its relation to water quality were evaluated during a 3-year (1993-96) study. The Floridan aquifer system, a carbonate aquifer system composed of the Upper Floridan aquifer, a middle semi-confining unit, and the Lower Floridan aquifer, is the major...
Quaternary geology of Alameda County, and parts of Contra Costa, Santa Clara, San Mateo, San Francisco, Stanislaus, and San Joaquin Counties, California: A digital database
E. J. Helley, R. W. Graymer
1997, Open-File Report 97-97
Alameda County is located at the northern end of the Diablo Range of Central California. It is bounded on the north by the south flank of Mount Diablo, one of the highest peaks in the Bay Area, reaching an elevation of 1173 meters (3,849 ft). San Francisco Bay forms the...
Occurrence of selected organochlorine compounds in fish tissue from eastern Iowa streams, 1995
Linda R. Roberts
1997, Fact Sheet 027-97
Human activities have caused dramatic changes to our Nation's landscape for over a century. Use of synthetic organic compounds in agriculture and industry has resulted in the accumulation and persistence of some of these compounds in natural systems. Concern has arisen over the contamination of our Nation's waters and the...
Pesticides in ground water in the Western Lake Michigan Drainages, Wisconsin and Michigan, 1983-1995
Amy M. Matzen, David A. Saad
1997, Fact Sheet 192-96
In 1991, the U.S. Geological Survey (USGS) began implementation of the National Water-Quality Assessment (NAWQA) Program. The long-term goals of the NAWQA Program are to describe the status and trends in the quality of a large, representative part of the Nation's surface- and ground- water resources, and to identify,...
Hydrologic conditions and hazards in the Kennicott River Basin, Wrangell-St. Elias National Park and Preserve, Alaska
R. L. Rickman, D. S. Rosenkrans
1997, Water-Resources Investigations Report 96-4296
McCarthy, Alaska, is on the Kennicott River, about 1 mile from the terminus of Kennicott Glacier in the Wrangell-St. Elias National Park and Preserve. Most visitors to McCarthy and the park cross the West Fork Kennicott River using a hand-pulled tram and cross the East Fork Kennicott River on a...
Extensional reactivation of the Chocolate Mountains subduction thrust in the Gavilan Hills of southeastern California
F.R. Oyarzabal, C.E. Jacobson, Gordon B. Haxel
1997, Tectonics (16) 650-661
The NE vergent Chocolate Mountains fault of south-eastern California has been interpreted as either a subduction thrust responsible for burial and prograde metamorphism of the ensimatic Orocopia Schist or as a normal fault involved in the exhumation of the schist. Our detailed structural analysis in the Gavilan Hills area provides...
Geohydrology and simulation of ground-water flow for the Ohio River alluvial aquifer near Owensboro, northwestern Kentucky
M.D. Unthank
1997, Water-Resources Investigations Report 96-4274
The Ohio River alluvial aquifer is the primary source of drinking water for the residents of Owensboro and Daviess County and adjacent counties in Kentucky. The aquifer consists of sand and gravel deposits that partly fill a bedrock-valley system consisting of shales of Pennsylvanian age. The valley is a result...
Delineation and extent of saltwater intrusion in the Biscayne aquifer, eastern Dade County, Florida, 1995
Roy S. Sonenshein
1997, Water-Resources Investigations Report 96-4285
No abstract available....
Proterozoic sequences and their implications for Precambrian and Cambrian geologic evolution of western Kentucky: Evidence from seismic-reflection data
James A. Drahovzal
1997, Seismological Research Letters (68) 553-566
Analyses of two seismic-reflection lines in western Kentucky indicate the presence of two Proterozoic, unconformity-bounded sequences. One is autochthonous and of probable Late Proterozoic age; the other is allochthonous and of probable Middle Proterozoic age. Reflector patterns and apparent relationships to similar sequences elsewhere in the region suggest that the...
