Preliminary delineation and description of the regional aquifers of Tennessee: the East Tennessee aquifer system
J. V. Brahana, Dolores Mulderink, J. A. Macy, M. W. Bradley
1986, Water-Resources Investigations Report 82-4091
The east Tennessee aquifer system occurs in the Valley and Ridge and the Blue Ridge provinces of Tennessee. These areas are underlain by rocks of Precambrian to Pennsylvanian age which have been structurally deformed and faulted during the Appalachian orogeny. Groundwater in the Valley and Ridge occurs primarily in solution...
Ground water in the Long Meadow area and its relation with that in the General Sherman Tree area, Sequoia National Park, California
J. P. Akers
1986, Water-Resources Investigations Report 85-4178
Westward movement of ground water from the Long Meadow area of Sequoia National Park, California, to the General Sherman Tree area is prevented by an eastward hydraulic gradient and low fracture permeability of a granodiorite ridge separating the two areas. Clay beds present in the alluvium in the Long Meadow...
Plan of study for the Regional Aquifer-System Analysis, Columbia Plateau, Washington, northern Oregon, and northwestern Idaho
J. J. Vaccaro
1986, Water-Resources Investigations Report 85-4151
The U.S. Geological Survey began a 4-year study of the regional aquifer system underlying the Columbia Plateau, in central and eastern Washington, northern Oregon, and northwestern Idaho in October 1983, as part of the Regional Aquifer System Analysis program. The study will describe the geohydrology, geochemistry, and quality of water...
Summary geochemical maps for samples of rock, stream sediment, and nonmagnetic heavy-mineral concentrate, east part of the Raymond Peak Roadless Area, Alpine County, California
M.A. Chaffee
1986, Miscellaneous Field Studies Map 1365-D
The Raymond peak Roadless Area consists of two separate units. The west part (5985), about 12 miles southwest of Markleeville in Stanislaus National Forest, has been studied separately as part of the Mokelumne Wilderness and vicinity (McKee and others, 1982). The east part (4985) is discussed here....
Bibliographies and location maps of aeromagnetic and aeroradiometric publications for the states east of the Mississippi River and south of the Ohio and Potomac rivers
Patricia L. Hill
1986, Open-File Report 86-525-D
Bibliographies and location maps of selected publications containing aeromagnetic and/or aeroradiometric data have been compiled for each state. These state indexes have been grouped together to form seven open-file reports: four for the conterminous United States (see index map below), one for Alaska and Hawaii, one for Puerto Rico and...
Geochemical map of the North Fork John Day River Roadless Area, Grant County, Oregon
James G. Evans
1986, Miscellaneous Field Studies Map 1581-B
The Wilderness Act (Public Law 88-577, September 3, 1964) and related acts require the U.S. Geological Survey and the U.S. Bureau of Mines to survey certain areas on Federal lands to determine their mineral resource potential. Results must be made available to the public and submitted to the President and the...
Thermal maturity map of the lower part of the Upper Cretaceous Mesaverde Group, Uintah Basin, Utah
Vito F. Nuccio, Ronald C. Johnson
1986, Miscellaneous Field Studies Map 1842
The ability of rock to generate oil and gas is directly related to the type and quantity of kerogen and to its thermal maturity; therefore, thermal maturity is a commonly used tool for oil and gas exploration. The purpose of this study ws to provide a thermal-maturity map for the...
Summary geochemical maps for samples of rock, stream sediment, and nonmagnetic heavy-mineral concentrate, Sweetwater Roadless Area, Mono County, California and Lyon and Douglas Counties, Nevada
Maurice A. Chaffee
1986, Miscellaneous Field Studies Map 1535-C
The Sweetwater Roadless Area lies between Yerington, Nevada, and Bridgeport, California, along the California-Nevada boundary. The area encompasses approximately 72,240 acres in Toiyabe National Forest in Mono County, California, and Lyon and Douglas Counties, Nevada. This roadless area, which lies just east of the Sierra Nevada range, exhibits rugged topography. Elevations...
Correlation of coal beds in the Fruitland Formation as interpreted from geophysical logs, east-central San Juan County, New Mexico
Dorothy T. Sandberg
1986, Miscellaneous Field Studies Map 1848
Correlation of coal beds in the Fruitland Formation (Upper Cretaceous) in the subsurface, from interpretation of geophysical logs, is an outgrowth of unpublished studies of deep coal on the Navajo Reservation by the author in the Toadlena 30 x 60 minute quadrangle, New Mexico, and by W. J. Mapel in...
Distribution and altitude of the top of saline ground water in the southeastern Coastal Plain
Roger W. Lee, Sydney S. DeJarnette, Rene A. Barker
1986, Water-Resources Investigations Report 85-4109
A map prepared by the U.S. Geological Survey shows the approximate distribution of saline water (greater than 10,000 mg/L as NaCl) in the Southeastern Coastal Plain. The primary distribution of saline water is in Cretaceous sediments and may be characterized as an extensive body of fluid whose upper surface generally...
Selected hydrologic data for Salt Lake Valley, Utah, October 1968 to October 1985
R. L. Seiler
1986, Open-File Report 86-249
This report contains hydrologic data collected in Salt Lake Valley from October 1968 to October 1985. The report area is bounded by the Wasatch Range on the east, the Oquirrh Mountains on the west, the Traverse Mountains on the south, and the boundary between Davis and Salt Lake Counties on...
Chemical quality of ground water in Salt Lake Valley, Utah, 1969-85
K.M. Waddell, R. L. Seiler, D. K. Solomon
1986, Open-File Report 86-138
During 1979-84, 35 wells completed in the principal aquifer in the Salt Lake Valley, Utah, that had been sampled during 1962-67 were resampled to determine if water quality changes had occurred. The dissolved solids concentration of the water from 13 of the wells has increased by more than 10% since...
The Conterminous United States Mineral Assessment Program; background information to accompany folio of geologic, geophysical, geochemical, mineral-occurrence, mineral-resource potential, and mineral-production maps of the Charlotte 1 degree x 2 degrees Quadrangle, North Carolina and South Carolina
Jacob Eugene Gair, Richard Goldsmith, D. L. Daniels, W. R. Griffitts, J. H. DeYoung, M. P. Lee
1986, Circular 944
This Circular and the folio of separately published maps described herein are part of a series of reports compiled under the Conterminous United States Mineral Assessment Program ICUSMAP). The folio on the Charlotte 1 degree ? 2 degree quadrangle, North Carolina and South Carolina, includes (1) a geologic map; (2)...
Hydrogeology and simulation of water flow in strata above the Bearpaw Shale and equivalents of eastern Montana and northeastern Wyoming
W. R. Hotchkiss, J. F. Levings
1986, Water-Resources Investigations Report 85-4281
The Powder River, Bull Mountains, and Williston basins of Montana and Wyoming were investigated to understand the geohydrology and subsurface water flow. Rocks were separated into: Fox Hills-lower Hell Creek aquifer (layer 1), upper Hell Creek confining layer (layer 2), Tullock aquifer (layer 3), Lebo confining layer (layer 4), and...
Generalized potentiometric surface of the Catahoula aquifer in central Louisiana, 1980
Angel Martin Jr., Charles D. Whiteman Jr.
1986, Water-Resources Investigations Report 86-4059
Generalized contours of the altitude of water levels in wells completed in the Catahoula aquifer in central Louisiana, are illustrated by this map. Most water level measurements used in compiling the map were made in 1980; however, in parts of the State where water levels from 1980 were unavailable and...
Application of a parameter-estimation technique to modeling the regional aquifer underlying the eastern Snake River plain, Idaho
Stephen P. Garabedian
1986, Water Supply Paper 2278
A nonlinear, least-squares regression technique for the estimation of ground-water flow model parameters was applied to the regional aquifer underlying the eastern Snake River Plain, Idaho. The technique uses a computer program to simulate two-dimensional, steady-state ground-water flow. Hydrologic data for the 1980 water year were used to calculate recharge...
Earthquakes
National Geophysical Data Center
1986, Report
An earthquake is the motion or trembling of the ground produced by sudden displacement of rock in the Earth's crust. Earthquakes result from crustal strain, volcanism, landslides, and collapse of caverns. Stress accumulates in response to tectonic forces until it exceeds the strength of the rock. The rock then breaks along a preexisting...
Hydrology of carbonate aquifers in southwestern Linn County and adjacent parts of Benton, Iowa, and Johnson Counties, Iowa
Kenneth Wahl, Bill J. Bunker
1986, Water Supply Bulletin 15
Groundwater is the major source of water in Linn County and the surrounding area. Approximately 90 percent of the groundwater production is from Silurian, Devonian, and Quaternary aquifers. The Silurian and Devonian aquifers consist of limestone and dolomite with minor shale beds, which have a regional dip to the southwest of...
Significance of Klamath rocks between the Franciscan Complex and Coast Range ophiolite, northern California
A. S. Jayko, Blake, R.N. Brothers
1986, Tectonics (5) 1055-1071
Small fault‐bounded slabs of low‐grade (prehnite‐pumpellyite‐bearing) slate, metagraywacke, and greenstone occur between the Coast Range ophiolite and South Fork Mountain Schist for at least 60 km south of the Klamath Mountains, northern California. The metagraywacke slabs differ from typical Franciscan Complex metagraywacke to the west by the absence of blueschist‐facies...
Blueschist metamorphism of the Eastern Franciscan belt, northern California
A. S. Jayko, M.C. Blake Jr., R.N. Brothers
1986, GSA Memoirs 164
Rocks of the Eastern Franciscan belt, northern California, are divided into two tectonostratigraphic terranes metamorphosed to the blueschist facies, both with a distinct lithologic association and deformational history. The easternmost terrane, the Pickett Peak terrane of Early Cretaceous isotopic age, consists of crenulated mica schist and gneissic to schistose metagraywacke,...
Resource potential of the western North Atlantic Basin
William P. Dillon, Frank T. Manheim, L.F. Jansa, Gudmundur Palmason, Brian E. Tucholke, Richard S. Landrum
1986, Book chapter, Geology of North America: The Western North Atlantic Region
We here consider the petroleum resources only of the off shelf portion of the western North Atlantic Ocean. Very little information is available for this region; off the eastern United States, only four petroleum exploration holes have been drilled in one restricted area seaward of the shelf, off the Baltimore...
Regional correlation of Grande Ronde basalt flows, Columbia River basalt group, Washington, Oregon, and Idaho (USA)
Margaret T. Mangan, Thomas L. Wright, Don Swanson, G. R. Byerly
1986, GSA Bulletin (97) 1300-1318
The tholeiitic flood basalts of the Columbia River Basalt Group of middle and late Miocene age cover more than 200,000 km2 in Washington, Oregon, and Idaho. The most voluminous formation of the Group, the Grande Ronde Basalt, erupted for 2 m.y. from north-northwest-trending fissure systems concentrated in southeast Washington and adjacent...
Holocene depositional history of a large glaciated estuary, Penobscot Bay, Maine
Harley J. Knebel
1986, Marine Geology (73) 215-236
Data from seismic-reflection profiles, sidescan sonar images, and sediment samples reveal the Holocene depositional history of the large (1100 km2) glaciated Penobscot Bay estuary of coastal Maine. Previous work has shown that the late Wisconsinan ice sheet retreated from the three main passages of the bay between 12,700 and 13,500...
Mortality of captive whooping cranes caused by eastern equine encephalitis virus
F. J. Dein, J. W. Carpenter, G.G. Clark, R.J. Montali, C.L. Crabbs, T.F. Tsai, D. E. Docherty
1986, Journal of the American Veterinary Medical Association (189) 1006-1010
Of 39 captive whooping cranes (Grus americana), 7 died during a 7-week period (Sept 17 through Nov 4, 1984) at the Patuxent Wildlife Research Center, Laurel, Md. Before their deaths, 4 cranes did not develop clinical signs, whereas the other 3 cranes were lethargic and ataxic, with high aspartate transaminase,...
Correlations between stream sulphate and regional SO2 emissions
R. A. Smith, R. B. Alexander
1986, Nature (322) 722-724
The relationship between atmospheric SO2 emissions and stream and lake acidification has been difficult to quantify, largely because of the limitations of sulphur deposition measurements. Precipitation sulphate (SO4) records are mostly <5 yr in length1 and do not account for dry sulphur deposition2. Moreover, a variable fraction of wet- and dry-deposited sulphur...
