Publications
Products (journal articles, reports, fact sheets) authored by current and past scientists are listed below. Please check the USGS Pubs Warehouse for other USGS publications.
Filter Total Items: 1927
REMAPP - PC computer file : remote sensing image processing software for MS - DOS personal computers, Part C - Executable code, source code, and text images REMAPP - PC computer file : remote sensing image processing software for MS - DOS personal computers, Part C - Executable code, source code, and text images
No abstract available.
Authors
Keith Eric Livo
REMAPP - PC computer file : remote sensing image processing software for MS - DOS personal computers, Part D - Test images disk 1 REMAPP - PC computer file : remote sensing image processing software for MS - DOS personal computers, Part D - Test images disk 1
No abstract available.
Authors
Keith Eric Livo
High-resolution reflectance spectra of Mars in the 2.3-μm region: evidence for the mineral scapolite High-resolution reflectance spectra of Mars in the 2.3-μm region: evidence for the mineral scapolite
patially resolved reflectance spectra of Mars in the 2.2- to 2.4-μm spectral region were obtained in August 1988 using the NASA 3-m Infrared Telescope Facility. The spectra show weak absorption features due to Martian atmospheric carbon monoxide and a surface mineral. Both CO and the mineral absorptions are composed of overlapping narrow features, but in many locations, such as Hellas...
Authors
Roger N. Clark, Gregg A. Swayze, Robert B. Singer, James B. Pollack
Mineral Resources of the Mount Nutt Wilderness Study Area, Mohave County, Arizona Mineral Resources of the Mount Nutt Wilderness Study Area, Mohave County, Arizona
The Mount Nutt Wilderness Study Area (AZ-020-024) is located in the Black Mountains about 15 mi west of Kingman, Arizona. At the request of the U.S. Bureau of Land Management, approximately 27,210 acres of the wilderness study area was evaluated for mineral resources (known) and mineral resource potential (undiscovered). In this report, the area studied is referred to as the 'wilderness...
Authors
Floyd Gray, Robert C. Jachens, Robert J. Miller, Robert L. Turner, Eric K. Livo, Daniel H. Knepper, John Mariano, Carl L. Almquist
Mineral resources of the Gibraltar Mountain and Planet Peak Wilderness Study Areas, La Paz County, Arizona Mineral resources of the Gibraltar Mountain and Planet Peak Wilderness Study Areas, La Paz County, Arizona
No abstract available.
Authors
Robert G. Eppinger, Jocelyn A. Peterson, H. Richard Blank, K. Eric Livo, Daniel H. Knepper, James A. Pitkin, Jon E. Spencer, Stephen J. Reynolds, Michael J. Grubensky, Terry J. Kreidler, David C. Scott
Epithermal gold-siver deposits in the western United States: time-space products of evolving plutonic, volcanic and tectonic environments Epithermal gold-siver deposits in the western United States: time-space products of evolving plutonic, volcanic and tectonic environments
The western United States has been the locus of considerable subaerial volcanic and plutonic igneous activity since the mid-Mesozoic. After the destruction of the Jurassic-Cretaceous magmatic arc-trench system, subduction was re-established in the Late Mesozoic with low-angle underthrusting of the oceanic plate beneath western North America. This resulted in crustal shortening during the...
Authors
Byron R. Berger, Harold F. Bonham
Isotopic geochemistry of a mid-Proterozoic evaporite basin: Balmat, New York Isotopic geochemistry of a mid-Proterozoic evaporite basin: Balmat, New York
No abstract available.
Authors
Joseph F. Whelan, Robert O. Rye, W. De Lorraine, Hiroshi Ohmoto
Mineral resources of the Gibraltar Mountain and Planet Peak Wilderness Study Areas, La Paz County, Arizona Mineral resources of the Gibraltar Mountain and Planet Peak Wilderness Study Areas, La Paz County, Arizona
No abstract available.
Authors
R. G. Eppinger, J.A. Peterson, H. R. Blank, K.E. Livo, D. H. Knepper, J. A. Pitkin, J.E. Spencer, S. J. Reynolds, M. J. Grubensky, T.J. Kreidle, D.C. Scott
High spectral resolution reflectance spectroscopy of minerals High spectral resolution reflectance spectroscopy of minerals
The reflectance spectra of minerals are studied as a function of spectral resolution in the range from 0.2 to 3.0 μm. Selected absorption bands were studied at resolving powers (λ/Δλ) as high as 2240. At resolving powers of approximately 1000, many OH‐bearing minerals show diagnostic sharp absorptions at the resolution limit. At low resolution, some minerals may not be distinguishable...
Authors
R. N. Clark, T. V. V. King, M. Klejwa, Gregg A. Swayze, N. Vergo
Genesis of the tabular-type vanadium-uranium deposits of the Henry Basin, Utah Genesis of the tabular-type vanadium-uranium deposits of the Henry Basin, Utah
Tabular-type vanadium-uranium deposits occur in fluvial sandstones of the Salt Wash Member of the Morrison Formation of Late Jurassic age The mineralized intervals and the weakly mineralized lateral extensions are bounded both above and below by zones rich in dolomite cement. Carbon isotope values of dolomite cements indicate that at least two sources of carbon existed. One source...
Authors
H. R. Northrop, M. B. Goldhaber, Gary P. Landis, J.W. Unruh, Richard J. Reynolds, John A. Campbell, Richard B. Wanty, Richard I. Grauch, Gene Whitney, Robert O. Rye
Geochemistry and occurrence of selenium: An overview Geochemistry and occurrence of selenium: An overview
Selenium (Se) is both beneficial and toxic to animals, plants, and humans. Consequently, it is imperative to know its concentration in the environment and to understand the processes controlling its distribution. Determinations of Se concentrations in a variety of materials indicate that Se is widely distributed throughout the environment. The processes responsible for its distribution...
Authors
James M. McNeal, Laurie S. Balistrieri
Isostatic residual gravity and crustal geology of the United States Isostatic residual gravity and crustal geology of the United States
A new isostatic residual gravity map of the conterminous United States presents continent-wide gravity data in a form that can be readily used, with geologic information and other geophysical data, in studies of the composition and structure of the continental crust. This map was produced from the gridded gravity data on which the recently released Gravity Anomaly Map of the United...
Authors
Robert C. Jachens, Robert W. Simpson, Richard J. Blakely, Richard W. Saltus