Publications
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Diffusimetry (diffusion constant estimation) on sediment cores by resistivity probe
Measurement of formation factor (ratio of rock resistivity to interstitial water resistivity) from sediment cores provides an indirect measurment of the tortuosity of the fluid channels in the sediments. From these measurements one can estimate the diffusion coefficient of the sediment with depth. The F (formation factor) values for Indian Ocean sediments varied from 1.6 for a clayey diatom ooze h
Authors
Frank T. Manheim, Lee S. Waterman
Deposition of zinc and cadmium by marine bacteria in estuarine sediments
Mixed cultures of marine bacteria isolated from the sediments of Corpus Christi Harbor were examined for their ability to assimilate or precipitate radioactive zinc and cadmium from solution. Test data indicate that during summer, when bacterial activity is at a maximum, the bacteria and their metabolic byproducts play a significant role in the removal of zinc and cadmium from seawater and their s
Authors
C.J. McLerran, Charles W. Holmes
Landslide Susceptibility Maps of Eastern and Southern Allegheny County, Pennsylvania (Braddock, Bridgeville, Canonsburg, Curtisville, Donora, Freeport, Glassport, McKeesport, Monongahela, Murrysvile, New Kensington East, New Kensington West 7-1/2 minute Q
No abstract available.
Authors
William E. Davies
Map showing density of landslides in the Pittsburgh East Quadrangle, Allegheny County, Pennsylvania
No abstract available.
Authors
J. S. Pomeroy
Map showing density of landslides in the Pittsburgh West Quadrangle, Allegheny County, Pennsylvania
No abstract available.
Authors
J. S. Pomeroy
Apollo 11 voice transcript pertaining to the geology of the landing site
On July 20, 1969, America's Eagle touched down in southwestern Mare Tranquillitatis beginning man's firsthand exploration of the moon. This document is an edited record of the conversations between astronauts Neil Armstrong and Edwin "Buzz" Aldrin, Jr., at Tranquility Base, and Bruce McCandless at Mission Control in Houston during the approximately 22 hours spent on the lunar surface. It includes
Authors
N. G. Bailey, G. E. Ulrich
Geology and mineral deposits of Churchill County, Nevada
Churchill County, in west-central Nevada, is an area of varied topography and geology that has had a rather small total mineral production. The western part of the county is dominated by the broad low valley of the Carson Sink, which is underlain by deposits of Lake Lahontan. The bordering mountain ranges to the west and south are of low relief and underlain largely by Tertiary volcanic and sedime
Authors
Ronald Willden, Robert C. Speed
Structural framework of United States Atlantic outer continental shelf north of Cape Hatteras
To assess the area’s hydrocarbon potential, regional geologic and geophysical studies are being conducted by the U.S. Geological Survey to determine the structural framework of the United States Atlantic outer continental shelf (AOCS) north of Cape Hatteras. Preliminary interpretations of geophysical data suggest that the buried ridge under the eastern edge of the AOCS in the Baltimore Canyon trou
Authors
R. E. Mattick, R. Q. Foote, N. L. Weaver, M. S. Grim
Landslide susceptibility map of the Pittsburgh West 7 1/2-minute Quadrangle, Allegheny County, Pennsylvania
No abstract available.
Authors
J. S. Pomeroy
Landslide susceptibility map of the Pittsburgh East 7 1/2-minute Quadrangle, Allegheny County, Pennsylvania
No abstract available.
Authors
J. S. Pomeroy