Hydrology and sedimentation of Bixler Run basin, central Pennsylvania
Lloyd A. Reed
1975, Open-File Report 75-26
Rainfall, streamflow, stream chemical, and sediment discharge data were collected from Bixler Run near Loysville, Pa., during the period February 1954 to September 1969, as part of a project to evaluate sediment discharge from an agricultural area that had been adopting soil-conservation techniques at a moderate rate. The study was...
Water availability in Perry County, Alabama
Philip C. Reed, J.R. Willmon, Patrick O. Jefferson
1975, Open-File Report 75-482
The principal sources of large quantities of ground water in Perry County are sand and gravel aquifers in the Coker, Gordo, and Eutaw Formations of the Upper Cretaceous Series. Upper Cretaceous deposits, which dip to the southwest at about 35 feet per mile, range in thickness (d from about 400...
A predictive computer model of the Lower Cretaceous aquifer, Franklin area, southeastern Virginia
O. J. Cosner
1975, Water-Resources Investigations Report 51-74
The Lower Cretaceous aquifer of Southeastern Virginia is simulated in this study. The aquifer is only a few feet thick along the Fall Line, where it is near or at the surface, but it thickens and dips to the east. At Franklin where the top of the aquifer is 220...
Digital-simulation and projection of water-level declines in basalt aquifers of the Odessa-Lind area, east-central Washington
J. E. Luzier, James A. Skrivan
1975, Water Supply Paper 2036
A digital computer program using finite-difference techniques simulates an intensively pumped, multilayered basalt-aquifer system near Odessa. The aquifers now developed are in the upper 1,000 feet of a regionally extensive series of southwesterly dipping basalt flows of the Columbia River Group. Most of the aquifers are confined. Those in the...
Water availability, Jefferson County, Alabama
Alfred L. Knight
1975, Open-File Report 75-461
The average annual precipitation in Jefferson County is about 53 inches (1,346.2 millimeters) or about 2,820 mgd (million gallons per day), which is equivalent to 124 m3/s (cubic meters per second). Part of the rainfall (about 1,130 mgd or 50 m3/s) runs off directly into streams, and the remaining 1,690...
Availability of ground water in Marion County, Indiana
William R. Meyer, J. P. Reussow, D. C. Gillies, W. J. Shampine
1975, Open-File Report 75-312
County constitute the most extensive aquifers in the county. Four areally distinct sand and gravel aquifers were mapped in the drift during the course of this study. The aquifer of greatest economic importance consists of sand and gravel deposits of glacial-outwash origin which coincide with the courses of the White...
Water-quality assessment of the Indiana Dunes National Lakeshore, 1973-74
Leslie D. Arihood
1975, Water-Resources Investigations Report 75-14
The Indiana Dunes National Lakeshore is underlain by unconsolidated lake and glacial deposits which have been divided into three units. Unit 1 is comprised mostly of sand and, in the western part of the National Lakeshore, is capable of yielding more than 500 gallons per minute (32 litres per second)...
Simulated drawdown for selected well fields in the Ohio River alluvial aquifer
Hayes F. Grubb
1975, Water-Resources Investigations Report 74-2
Drawdown due to pumping was simulated for three sites in the alluvial aquifer adjacent to the Ohio River by digital modeling techniques. Two well-field arrangements were used at each site. The initial well-field arrangement at each site consisted of three wells located in a line parallel to the Ohio River....
A finite-element model of a two-dimensional, single-phase heat transport in a porous medium
James W. Mercer, George Francis Pinder
1975, Open-File Report 75-574
Weather modification: possible effects
Charles J. Robinove
1975, Science (188) 208-208
No abstract available....
ERTS imagery for ground-water investigations
Gerald K. Moore, Morris Deutsch
1975, Ground Water (13) 214-226
ERTS imagery offers the first opportunity to apply moderately high-resolution satellite data to the nationwide study of water resources. This imagery is both a tool and a form of basic data. Like other tools and basic data, it should be considered for use in ground-water investigations. The main advantage of...
Movement of spilled oil as predicted by estuarine nontidal drift
T. J. Conomos
1975, Limnology and Oceanography (20) 159-173
Information on water movement obtained from bimonthly releases of surface and seabed drifters in the San Francisco Bay and adjacent Pacific Ocean is used to understand major processes controlling dispersal of oil after a spill of 3,200 m3 of Bunker C in the bay in January 1971. River-induced nontidal estuarine...
Crustal movement investigations
James C. Savage
1975, Reviews of Geophysics (13) 263-265
Studies of horizontal crustal movement using conventional geodetic methods have been considerably expanded in the quadrennium 1971–1974. The basic fault monitor Geodimeter network now covers most of the major faults in California as well as the zone of faulting that extends into Nevada. Isolated Geodimeter networks in seismic areas of...
Generation of potassium-poor magmas in the northern Sierra Nevada and the Svecofennian of Finland
Anna Hietanen
1975, Journal of Research of the U.S. Geological Survey (3) 631-645
Comparison of the evolution of magmas in the Precambrian of southwestern Finland with that in the Paleozoic and Mesozoic of the northern Sierra Nevada brings out features that may clarify the origin of potassium-poor silicic magmas. In the northern Sierra Nevada, Paleozoic sodarhyolitic effusive rocks and associated trondhjemite represent silicic...
Modern pollen surface samples: An analysis of subsamples
David P. Adam, Peter J. Mehringer
1975, Journal of Research of the U.S. Geological Survey (3) 733-736
Multiple subsamples of pollen samples obtained from the modern soil surface at two sites in southern Arizona were individually collected and analyzed to evaluate the practice of mixing subsamples when collecting modern surface samples. Results suggest that at least five subsamples must be mixed in order to avoid collecting a...
Structure and Paleozoic stratigraphy of a complex of thrust plates in the Fish Creek Reservoir area, south-central Idaho
Betty A. Skipp, Wayne E. Hall
1975, Journal of Research of the U.S. Geological Survey (3) 671-689
Permian, Pennsylvanian, Mississippian, Devonian, and Silurian marine rocks of diverse facies are brought together in a complex of six thrust sheets in the Fish Creek Reservoir area on the north edge of the Snake River Plain, Idaho. The lowest structural element, the parautochthon, is made of more than 450 m...
Evaluation of stochastic models describing movement of sediment particles on riverbeds
Petar Todorovic, Carl F. Nordin Jr.
1975, Journal of Research of the U.S. Geological Survey (3) 513-517
Various stochastic models have been proposed to describe the movement of sediment particles on the riverbed. Here it is attempted to summarize in an integrated form and to generalize the most important theoretical results in this field. The approach adopted in this paper is based on the fact that most...
A typical cross section based on magnetic data of lower and middle Keweenawan volcanic rocks, Ironwood area, Michigan
Elizabeth R. King
1975, Journal of Research of the U.S. Geological Survey (3) 543-546
A north-trending aeromagnetic profile of a sequence of east-striking Keweenawan volcanic rocks near Ironwood, Mich., can be matched to a calculated profile over a model consisting of a series of dipping layers. (The dips were those measured by H. A. Hubbard along the north-trending valley of the Black River.) Remanent...
Quaternary faults at San Diego Bay, California
George W. Moore, Michael P. Kennedy
1975, Journal of Research of the U.S. Geological Survey (3) 589-595
Acoustic-reflection profiles of subbottom strata reveal numerous faults that cut Quaternary deposits within and directly outside of San Diego Bay. These faults, together with previously mapped onshore faults, constitute the Rose Canyon fault zone that forms the local west boundary of the Santa Ana tectonic block, which is bounded on...
Tectonics of the western Valley and Ridge foldbelt, Pendleton County, West Virginia - a summary report
William J. Perry Jr.
1975, Journal of Research of the U.S. Geological Survey (3) 583-588
A belt of high anticlines, the Nittany anticlinorium, occupies the western Valley and Ridge foldbelt in the central Appalachians. It extends southwestward from the Nittany arch of central Pennsylvania into the Virginias. An investigation of the tectonics of this anticlinorium in Pendleton County, W. Va., rules out active basement involvement...
Optimal exploitation strategies for an animal population in a Markovian environment: A theory and an example
David R. Anderson
1975, Ecology (56) 1281-1297
Optimal exploitation strategies were studied for an animal population in a Markovian (stochastic, serially correlated) environment. This is a general case and encompasses a number of important special cases as simplifications. Extensive empirical data on the Mallard (Anas platyrhynchos) were used as an example of general theory. The number of...
Earthquake shaking and damage to buildings
R.A. Page, W. B. Joyner, J.A. Blume
1975, Science (189) 601-608
Ground shaking close to the causative fault of an earthquake is more intense than it was previously believed to be. This raises the possibility that large numbers of buildings and other structures are not sufficiently resistant for the intense levels of shaking that can occur close to the fault. Many...
Morphology and phylogeny of the coccolithophycean family Ceratolithaceae
Stefan Gartner, David Bukry
1975, Journal of Research of the U.S. Geological Survey (3) 451-465
The family Ceratolithaceae includes a group of horseshoe-shaped calcareous nannofossils and contains ten species which are assignable to two genera: Amaurolithus n. gen. and Ceratolithus. Species of Amaurolithus are characterized by showing faint or no birefringence in cross-polarized light when viewed in preferred orientation. Included in Amaurolithus are A. amplificus...
Rockfall seismicity correlation with field observations, Makaopuhi Crater, Kilauea Volcano, Hawaii
Robert I. Tilling, Robert Y. Koyanagi, Robin T. Holcomb
1975, Journal of Research of the U.S. Geological Survey (3) 345-361
During August 7-13, 1972, intense and sustained rockfall activity occurred in Makaopuhi Crater on the east-rift zone of Kilauea Volcano. In a 4-day period (August 7-10), approximately 270,000 m3 of rockfall debris accumulated in Makaopuhi's west pit, representing a total kinetic energy release of about 101B ergs. Because the rockfalls...
Geology, geochemistry, and fluid-inclusion petrography of the Sapo Alegre porphyry copper prospect and its metavolcanic wallrocks, west-central Puerto Rico
Dennis P. Cox, Ileana Perez Gonzalez, J. Thomas Nash
1975, Journal of Research of the U.S. Geological Survey (3) 313-327
The Sapo Alegre prospect, a small porphyry copper-molybdenum occurrence in west-central Puerto Rico, is characterized by distinct zones of alteration and mineralization of quartz diorite porphyry. A biotite-chlorite zone in the porphyry near its contact with surrounding metavolcanic rocks contains copper, molybdenum, gold, silver, selenium, and tellurium. A quartz-sericite-pyrite zone...
