Relationship of landslides to fractures in Potomac Group deposits, Fairfax County, Virginia
William H. Langer, Stephen F. Obermeier
1978, Open-File Report 78-779
Landsliding is a common problem in eastern Fairfax County, an area underlain by Potomac Group (Lower Cretaceous) Coastal Plain deposits of silt and clay interbedded and interfingered with sand and gravel. The slides commonly are present in clay and silt that, on the basis of laboratory tests, appear to be...
Potential hazards from future eruptions of Mount St. Helens Volcano, Washington
Dwight Raymond Crandell, Donal Ray Mullineaux
1978, Bulletin 1383-C
Mount St. Helens has been more active and more explosive during the last 4,500 years than any other volcano in the conterminous United States. Eruptions of that period repeatedly formed domes, large volumes of pumice, hot pyroclastic flows, and, during the last 2,500 years, lava flows. Some of this activity...
Understanding natural systems; a perspective for land-use planning in Appalachian Kentucky
Wayne L. Newell
1978, Bulletin 1438
An eight-county area at the headwaters of the Kentucky River has been designated the Kentucky River Area Development District (KRADD) by the Appalachian Regional Commission. The objective of the project described in this report has been to provide materials to KRADD planners in a format and containing terminology usable by...
Water-table map of Racine County, Wisconsin
M.G. Sherrill, J.J. Schiller
1978, Water-Resources Investigations Report 79-41
A map (scale 1:100,000) of the water table in Racine County in southeastern Wisconsin was prepared using water levels from more than 250 wells. The work was done as a cooperative project between the U.S. Geological Survey and the Southeastern Wisconsin Regional Planning Commission. The map shows the altitude of...
Water-table map of Walworth County, Wisconsin
Marvin G. Sherrill, John R. Erickson
1978, Water-Resources Investigations Report 79-42
A map of the water table in Walworth County in southeastern Wisconsin was prepared using water levels from nearly 600 wells. The work was done as a cooperative project between the U.S. Geological Survey, the University of Wisconsin-Extension, Geological and Natural History Survey, and the Southeastern Wisconsin Regional Planning Commission....
Pennsylvanian (Upper Carboniferous) system of Wyoming
Edwin K. Maughan
1978, Open-File Report 78-377
Pennsylvanian rocks in Wyoming comprise two stratigraphic sequences bounded by regional unconformities. Red mudstone and limestone characterize the strata in the lower sequence, and sandstone and dolomite characterize the strata in the upper sequence. Initial deposits of the lower sequence are-red mudstone probably of no older age than about middle...
Potential hazards from future eruptions in the vicinity of Mount Shasta Volcano, northern California
C. Dan Miller
1978, Open-File Report 78-827
Mount Shasta has erupted, on the average, at least once per 800 years during the last 10,000 years, and about once per 600 years during the last 4,500 years. The last known eruption occurred about 200 radiocarbon years ago. Eruptions during the last 10,000 years produced lava flows and domes...
Predictive analyses of ground-water discharges in the Willow Creek Watershed, northeast Nebraska
Jack T. Dugan, Eric G. Lappala
1978, Water-Resources Investigations Report 78-67
Ground-water discharge to Willow Creek, which drains a 204 mi2 watershed in northeast Nebraska was predicted for six combinations of conditions of climate and ground-water development. A digital model of the ground water/surface-water system was stressed with recharge and withdrawal functions determined from a linear reservoir model of the soil...
Contour map of the base of Pennsylvanian strata in eastern Kentucky
T. Dennis Coskren
1978, Open-File Report 78-893
No abstract available....
Ground-water records for eastern Oklahoma, Part 2; water-quality records for wells, test-holes, and springs
1978, Open-File Report 78-357
The U. S. Geological Survey has collected data on Oklahoma's ground-water resources since 1934. Most of these data were collected as part of specific ground-water studies conducted in cooperation with various Federal, State, and local agencies. Data on construction, yield, water levels, and other physical well parameters are given in...
Spectral reflectance measurements of plants in the East Tintic Mountains, Utah
Nancy Milton
1978, Open-File Report 78-448
No abstract available....
The metallogenic role of east-west fracture zones in South America with regard to the motion of lithospheric plates (with an example from Brazil)
J. Kutina, William D. Carter, F.X. Lopez
1978, Jornal de Mineralogia (7) 97-110
The role of east-west fracture zones in South America is discussed with regard to global fracturing and the motion of lithospheric plates. A set of major NW-trending lineaments has been derived which show a tendency to be spaced equidistantly and may correspond to a set of east-west fractures in the...
Tectolinear interpretation of a 1:5,000,000 Landsat-1 mosaic compared with the structure of central and eastern United States
Jan Kutina, William D. Carter
1978, Global Tectonics and Metallogeny (1) 78-82
The pattern of lineaments and curvilinear features interpreted from a 1:5,000,000 mosaic of satellite images (Landsat-1 was superimposed on a simplified version of the Geological Map of the United States, 1:2,500,000 scale, showing the structural scheme of Central and Eastern United States. A comparison of the above two patterns, shown...
Marine diatom sequence in Miocene strata of the Chesapeake Bay region, Maryland
George W. Andrews
1978, Micropaleontology (24) 371-406
The Calvert and Choptank Formations exposed along the west shore of Chesapeake Bay in Maryland have been correlated with strata of early and middle Miocene age. The stratigraphic ranges of marine diatom marker species indicate a distinct diatom sequence in the deposits. A few diatoms that mark deep-sea Miocene deposits...
Metallogenesis in the western United States
P. W. Guild
1978, Journal of the Geological Society (135) 355-376
Although the Mesozoic-Cenozoic metallogeny of the western United States unquestionably resulted from convergence of the North American and Pacific Ocean plates, subduction alone does not adequately explain the distribution of the ore deposits in Laramide and post-Laramide time, when magmatism and mineralization extended irregularly eastward at least 1500 km from...
Neogene basin formation in relation to plate tectonic evolution of San Andreas fault system, California
Blake, R. H. Campbell, T. W. Dibblee Jr., D. G. Howell, Tor H. Nilsen, W. R. Normark, J. G. Vedder, E. A. Silver
1978, American Association of Petroleum Geologists Bulletin (62) 344-372
More than 90% of the known petroleum accumulations west of the San Andreas fault in California are in strata deposited in areally restricted Neogene basins that formed during a major tectonic reorganization of western California. These deep, localized Neogene basins replaced broad, regionally persistent Paleogene depositional aprons, although some of...
The IFG incremental methodology for physical instream habitat evaluation
Clair B. Stalnaker
1978, Book, Surface Mining and Fish/Wildlife Needs in the Eastern United States: Proceedings of a Symposium
Holocene pyroclastic-flow deposits from Shastina and Black Butte, west of Mount Shasta, California
C. Dan Miller
1978, Journal of Research of the U.S. Geological Survey (6) 611-623
A broad apron of pyroclastic-flow deposits derived from dacitic domes of Holocene age at Black Butte and Shastina covers an area of more than 110 km2 on the west flank of Mt. Shasta volcano. The stratigraphy of the deposits is exposed in readouts along a northwest-southeast line between the cities...
CS2 and COS in soil gases of the Roosevelt Hot Springs Known Geothermal Resource Area, Beaver County, Utah
Margaret Hinkle, Thelma F. Harms
1978, Journal of Research of the U.S. Geological Survey (6) 571-578
Soil-gas samples were collected in two parallel traverses across the Dome fault zone of the Roosevelt Hot Springs Known Geothermal Resource Area. Gas chromatographic analyses of the samples showed anomalous concentrations of CS3 and COS east of the Dome fault; higher concentrations of CS2 and COS also occurred over an...
Regional gravity and magnetic anomalies in the eastern Snake River Plain, Idaho
Don R. Mabey
1978, Journal of Research of the U.S. Geological Survey (6) 553-562
Over the eastern Snake River Plain, the Bouguer gravity anomaly and the magnetic intensity are, in general, high. In detail, both the gravity and the magnetic anomalies are a complex of highs and lows, in contrast to the simpler anomalies over the western Snake River Plain. The broad gravity high...
Strain in southern California: Measured uniaxial north-south regional contraction
J.C. Savage, W.H. Prescott, M. Lisowski, N. King
1978, Science (202) 883-885
The plate tectonics model of the Pacific moving northwest relative to North America implies that the regional strain in California should be simple shear across a vertical plane striking N45°W or equivalently equal parts of north-south contraction and east-west extension. Measurements of the strain accumulation at seven separate sites in...
Model aids planners in predicting rising ground-water levels in San Bernardino, California
William F. Hardt, C. B. Hutchinson
1978, Groundwater (16) 424-431
The city of San Bernardino is in a semiarid inland valley about 60 miles (100 kilometers) east of Los Angeles. The southern part of the city is traversed by the San Jacinto fault. Adjacent to the upgradient (northeast) side of the fault is a 10 square mile (26 square kilometers)...
Refraction studies between Icy Bay and Kayak Island, eastern Gulf of Alaska
K.C. Bayer, R.E. Mattick, T.R. Bruns, George Plafker
1978, Journal of Research of the U.S. Geological Survey (6) 625-636
Results of five seismic refraction lines shot by the U.S. Geological Survey in the Gulf of Alaska between Icy Bay and Kayak Island indicate the following: (1) The Continental Shelf is underlain by as much as 11 km of sedimentary rock of probable Tertiary age where refraction velocities range from 1.2 to 5.5 kilometers per...
Lithium-bearing rocks of the Horse Spring Formation, Clark County, Nevada
Elizabeth F. Brenner-Tourtelot, Richard K. Glanzman
1978, Energy (3) 255-262
The Horse Spring Formation of Miocene age in Clark County, Nevada, contains as much as 0.5% Li in individual samples. Rock sequences which average 0.1% Li range from 3 m thick near Gold Butte (south of Mesquite, Nev.) to as much as 40 m thick near Lava Butte (east...
Pleistocene history of volcanism and the Owens River near Little Lake, California
Wendell A. Duffield, George I. Smith
1978, Journal of Research of the U.S. Geological Survey (6) 395-408
During pluvial periods of the Pleistocene and Holocene, a large river flowed south from Owens Lake to China Lake between the Sierra Nevada and the Coso Range. The most recent channel, dry during historic time, is clearly marked by cliffs and falls. An older, now-abandoned part of the channel beneath...
