Metamorphic infrastructure in the northern Ruby Mountains, Nevada
Keith A. Howard
1980, Book chapter, Cordilleran metamorphic core complexes
The metamorphic complex of the northern Ruby Mountains in northeastern Nevada exposes Paleozoic strata that are metamorphosed to sillimanite grade, migmatized, and recumbently folded. Nappes are variously overturned to the east, north, south, and west. The deeper part of this metamorphic infrastructure is a migmatitic zone pervaded by pegmatitic two-mica...
Maps showing hydrologic conditions in the San Francisco River area, Greenlee County, Arizona, 1978: A reconnaissance study
Larry J. Mann
1980, Open-File Report 80-441
The San Francisco River area includes about 950 square miles in Greenlee County in east-central Arizona. Water-resources development has been slight compared with that in many areas in Arizona. In 1978 about 500 acre-feet of water was diverted for irrigation from the San Francisco and Blue Rivers, and about 550...
Epizootic of coccidiosis in free-flying lesser scaup (Aythya affinis)
R. M. Windingstad, M.E. McDonald, Louis N. Locke, S.M. Kerr, J.A. Sinn
1980, Avian Diseases (24) 1044-1049
A coccidiosis epizootic has occurred in lesser scaup (Aythya affinis) at Bluestem Reservoir in eastern Nebraska during the spring in each of three recent years: 1976-1978. Losses peaked during the period from mid-March through April. As much as 29% of the peak population of scaup using the reservoir died. Necropsies...
Heat flow and energetics of the San Andreas fault zone
A.H. Lachenbruch, J.H. Sass
1980, Journal of Geophysical Research Solid Earth (85) 6185-6223
Approximately 100 heat flow measurements in the San Andreas fault zone indicate (1) there is no evidence for local factional heating of the main fault trace at any latitude over a 1000-km length from Cape Mendocino to San Bernardino, (2) average heat flow is high (∼2 HFU, ∼80 mW m−2)...
Multiple ice flow directions during the Fraser Glaciation in the lower Skagit River drainage, northern Cascade Range, Washington
Paul L. Heller
1980, Arctic and Alpine Research (12) 299-308
Stratigraphic mapping and pebble-count data suggest that ice flowed in three different directions in the lower Skagit drainage of the northern Cascade Range during the Fraser Glaciation (∼ 10K to 20K BP). Glacier reconstructions suggest that till exposed at one site in the lower Skagit Valley was deposited by a...
Upper Wisconsinan till recovered on the continental shelf southeast of New England
Michael H. Bothner, Elliott C. Spiker
1980, Science (210) 423-425
Basal till was identified in two sediment cores collected about 69 kilometers southeast of Nantucket Island on the east and west sides of Great South Channel. These are the first samples of till collected on the outer continental shelf off the northeastern United States. The carbon-14 age of the total...
The Southern California uplift revisited
R. A. Kerr
1980, Earthquake Information Bulletin (USGS) (12) 98-103
The earthquake that struck Livermore, east of San Francisco, on January 24 was the second moderate earthquake to have occurred in the San Francisco Bay area in 5 months. It raised familiar questions. Does this mean that the "Big One" is coming? Is the theater of heightened concern now in...
Preliminary correlation of post-Erie interstadial events (16,000-10,000 radiocarbon years before present), central and eastern Great Lakes region, and Hudson, Champlain, and St. Lawrence Lowlands, United States and Canada
David S. Fullerton
1980, Professional Paper 1089
No abstract available....
Effects of the rate of releases from Sam Rayburn Reservoir on the aeration capacity of the Angelina River, eastern Texas
Jack Rawson, Richard L. Goss, Ira G. Rathbun
1980, Water-Resources Investigations Report 80-58
A three-phase study was conducted during July and August 1979 to determine the effects of varying release rates through the power-outlet works at Sam Rayburn Reservoir, eastern Texas, on aeration capacity of a 14-mile reach of the Angelina River below Sam Rayburn Dam. The dominant factors that affected the aeration...
Geology and groundwater resources of Monroe County, Pennsylvania
Orville B. Lloyd Jr., Louis D. Carswell
1979, Water Resource Report 47
Monroe County is on the eastern border of Pennsylvania and includes much of the area popularly called the Poconos. It is an area long used for outdoor recreation and includes a part of the Delaware Water Gap National Recreation Area. Water resources in the county are derived from precipitation. The...
Recovery of breeding success in a population of brown pelicans
Vivian M. Mendenhall, Richard M. Prouty
1979, Conference Paper, Proceedings of the 1978 conference of the colonial waterbird group
Breeding populations of the brown pelican (Pelecanus occidentalis) declined during the 1960's on both east and west coasts of the United States. In 1969, colonies in South Carolina fledged an average of 0.78 young per nest (Blus et al. 1974b), and those in California only 0.004 (Anderson et al....
Small-scale slump deposits, Middle Atlantic Continental Slope, off eastern United States
H.J. Knebes, Bobb Carson
1979, Marine Geology (29) 221-236
Analyses of 24 high-resolution seismic-reflection profiles that were collected during local and regional surveys show that small-scale slump deposite are ubiquitous whthin the intercanyon areas of the Continental Slope of the Middle Atlantic Bight. The deposits involve the upper 10-90 m of sediments, extend downslops for 1.8-7.2 km, and are...
Earthquake recurrence on the Calaveras fault east of San Jose, California
Charles G. Bufe, Philip W. Harsh, Robert O. Burford
1979, Tectonophysics (52) 603-603
Occurrence of small (3 ⩽ ML < 4) earthquakes on two 10-km segments of the Calaveras fault between Calaveras and Anderson reservoirs follows a simple linear pattern of elastic strain accumulation and release. The centers of these independent patches of earthquake activity are 20 km apart. Each region is characterized by a...
Quaternary crustal deformation along a major branch of the San Andreas fault in central California
G. E. Weber, K. R. Lajoie, J.F. Wehmiller
1979, Tectonophysics (52) 378-379
Deformed marine terraces and alluvial deposits record Quaternary crustal deformation along segments of a major, seismically active branch of the San Andreas fault which extends 190 km SSE roughly parallel to the California coastline from Bolinas Lagoon to the Point Sur area. Most of this complex fault zone lies offshore...
Two areas of probable holocene deformation in southwestern Utah
R.E. Anderson, R.C. Bucknam
1979, Tectonophysics (52) 417-430
Recent geologic studies in southwestern Utah indicate two areas of probable Holocene ground deformation. 1. (1) A narrow arm of Lake Bonneville is known to have extended southward into Escalante Valley as far as Lund, Utah. Remnants of weakly developed shoreline features, which we have recently found, suggest that Lake...
Vertical crustal movements in the Charleston, South Carolina-Savannah, Georgia area
Peter T. Lyttle, Gregory S. Gohn, Brenda Higgins, D.S. Wright
1979, Tectonophysics (52) 183-189
First-order vertical level surveys (National Geodetic Survey) repeated between 1955 and 1975 suggest that modern vertical crustal movements have taken place in the Atlantic Coastal Plain between Charleston, South Carolina and Savannah, Georgia. The relative sense of these movements correlates with the sense of displacement of Tertiary strata on known...
Initiation and development of the southern California uplift along its northern margin
R.S. Stein, W. Thatcher, R. O. Castle
1979, Tectonophysics (52) 301-302
Analysis of three first-order leveling lines that traverse the White Wolf fault (site of the 1952 M = 7.7 earthquake), each resurveyed nine times between 1926 and 1974, reveals probable preseismic tilting, major coseismic movements, and a spatial association between these movements and the subsequently recognized southern California uplift. In examining the...
Seismic refraction study of the continental edge off the eastern United States
R. E. Sheridan, J. A. Grow, John C. Behrendt, K.C. Bayer
1979, Tectonophysics (59) 1-26
Three long, strike-parallel, seismic-refraction profiles were made on the continental shelf edge, slope and upper rise off New Jersey during 1975. The shelf edge line lies along the axis of the East Coast Magnetic Anomaly (ECMA), while the continental rise line lies 80 km seaward of the shelf edge. Below...
General geology and mines of the East Tintic mining district, Utah and Juab counties, Utah, with sections on the geology of the Burgin mine and the geology of the Trixie mine
H. T. Morris, Thomas Seward Lovering, A. P. Mogensen, W.M. Shepard, L. I. Perry, S. M. Smith
1979, Professional Paper 1024
This report is a study of the rocks, geologic structures, and mines of a highly productive silver, gold, and base-metal mining district in the east-central Great Basin. The East Tintic mining district is in the east-central part of the East Tintic Mountains, near the east margin of the Basin and...
Preliminary report on drilling in and near the San Andreas fault zone, California; Dry Lake Valley No. 1
John C. Roller, Mark D. Zoback, C.B. Raleigh, R.P. Liechti
1979, Open-File Report 79-1206
The purpose of drilling into the San Andreas fault zone is threefold. First, recovery of material from depth will permit determination of the composition and constitutive properties of both solid and fluid phases. Second, it will enable measurements of the physical state of the fault zone to be made (that...
Surface mining and fish/wildlife needs in the eastern United States: addendum to proceedings of a symposium
Jay R. Stauffer, Charles H. Hocutt, William T. Mason
David E. Samuel, editor(s)
1979, FWS/OBS 78/81A
A preliminary study of the Coyote Lake earthquake of August 6, 1979, and its major aftershocks
William Hung Kan Lee, Darrell G. Herd, V. Cagnetti, W. H. Bakun, A. Rapport
1979, Open-File Report 79-1621
The August 6, 1979 earthquake (magnitude 5.7 + 0.2) was located about 1 km east of the Calaveras fault trace near Coyote Lake, at a depth of about 10 km. The spatial distribution of the aftershocks in the first 15 days and the focal mechanism of the main shock and...
Discharge of saltwater from Permian rocks to major stream-aquifer systems in central and south-central Kansas
Anthony J. Gogel
1979, Open-File Report 79-1055
Saline-water inflow from Permian rocks has resulted in the degradation of freshwater systems in several areas of central and south-central Kansas. Solution of evaporite beds has occurred along the eastern edge of the Wellington Formation, chiefly within the Hutchinson Salt Member and associated gypsum units. The solution, caused by leakage...
Principal thorium resources in the United States
Mortimer Hay Staatz, T.J. Armbrustmacher, J. C. Olson, I. K. Brownfield, M. R. Brock, J.F. Lemons, L.V. Coppa, B.V. Clingan
1979, Circular 805
Resources were assessed for thorium in the higher grade and better known deposits in the United States in: (1) veins, (2) massive carbonatites, (3) stream placers of North and South Carolina, and (4) disseminated deposits. Thorium resources for the first three categories were divided into reserves and probable potential resources....
Water resources data for Washington, water year 1978, Vol. 2 - Eastern Washington
Water Resources Division, U.S. Geological Survey
1979, Water Data Report WA-78-2
Water resources data for the 1978 water year for Washington consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground-water wells. This volume contains records for water discharge at 248 gaging stations;...
