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: 1829
Spectroscopy of rocks and minerals and principles of spectroscopy
Spectroscopy is the study of light as a function of wavelength that has been emitted, reflected or scattered from a solid, liquid, or gas. In this chapter I will primarily discuss the spectroscopy of minerals, but the principles apply to any material. No single chapter can cover this topic adequately, and one could argue, not even a single book. Thus, in some ways, this chapter may fall short of e
Authors
Roger N. Clark
Geochemical data for stream-sediment, heavy-mineral-concentrate, and rock samples collected from the Fortyseven Creek gold-arsenic-antimony-tungsten prospect, southwestern Alaska
In the summer of 1991, we conducted a reconnaissance geochemical survey around the Fortyseven Creek Au-As-Sb-W prospect that is located in the southwestern part of the Sleetmute quadrangle. At that time, this project was a small part of a more comprehensive Alaska Mineral Resource Assessment Program (AMRAP) study of the Sleemute quadrangle. AMRAP studies were conducted by the U.S. Geological Surve
Authors
John E. Gray, G. K. Lee, R. M. O'Leary, P. M. Theodorakos
Geochronologic and isotope studies of calcite and silica constraining Quaternary unsaturated- and saturated zone hydrologic flux at Yucca Mountain, Nevada, USA
Both unsaturated- and saturated-zone aqueous solutions are capable of precipitating secondary mineral deposits that document the history and origins of past water flux. Calcite and opal occur as thin coatings on open fractures and cavity floors within the thick unsaturated zone at Yucca Mountain. Outermost surfaces of calcite have 14C ages of between 44,000 and 16,000 radiocarbon years; however, t
Authors
James B. Paces, Zell E. Peterman, Leonid A. Neymark, Joseph F. Whelan, Brian D. Marshall
Neogene to Quaternary U-Th-Pb geochronology using opal, Yucca Mountain, Nevada, USA
No abstract available.
Authors
Leonid A. Neymark, James B. Paces, Yu. V. Amelin
Radionuclides in fly ash and bottom ash: Improved characterization based on radiography and low energy gamma-ray spectrometry
Two radiation-based techniques for determining the distribution and relative abundance of radionuclides are described, and applied to a suite of fly ash and bottom ash samples from a Kentucky power plant. The technique of fission-track radiography provides new observations of the variety of uranium hosts and of uranium distribution in individual particles of fly ash, and thus aids prediction of th
Authors
Robert A. Zielinski, James R. Budahn
Analytical results for forty-two fluvial tailings cores and seven stream sediment samples from High Ore Creek, northern Jefferson County, Montana
Metal-mining related wastes in the Boulder River basin study area in northern Jefferson County, Montana have been implicated in their detrimental effects on water quality with regard to acid-generation and toxic-metal solubility. Sediments, fluvial tailings and water from High Ore Creek have been identified as significant contributors to water quality degradation of the Boulder River below Basin,
Authors
David L. Fey, Stan E. Church
Gravel deposits of the South Platte River valley north of Denver, Colorado
No abstract available.
Authors
David A. Lindsey, William H. Langer, Linda Scott Cummings, John F. Shary, Joseph E. Taggart, Gregory P. Meeker
Geologic studies in Alaska by the U.S. Geological Survey, 1996
This collection of 12 papers continues the annual series of U.S. Geological Survey (USGS) reports on geologic investigations in Alaska. The annual volume presents results from new or ongoing studies in Alaska that are of interest to scientists in academia, industry, land and resource managers, and the general public. The Geological Studies in Alaska volume reports the results of studies that cover
Influence of subglacial geology on the onset of a West Antarctic ice stream from aerogeophysical observations
Marine ice-sheet collapse can contribute to rapid sea-level rise. Today, the West Antarctic Ice Sheet contains an amount of ice equivalent to approximately six metres of sea-level rise, but most of the ice is in the slowly moving interior reservoir. A relatively small fraction of the ice sheet comprises several rapidly flowing ice streams which drain the ice to the sea. The evolution of this drain
Authors
R. E. Bell, D. D. Blankenship, Carol A. Finn, D. L. Morse, T. A. Scambos, J. M. Brozena, S. M. Hodge
Potential mineral resources, Payette National Forest, Idaho: Description and probabilistic estimation
The Payette National Forest (PNF), in west-central Idaho, is geologically diverse and contains a wide variety of mineral resources. Mineral deposit types are grouped into locatable, leasable, and salable categories. The PNF has substantial past production and identified resources of locatable commodities, including gold, silver, copper, zinc, tungsten, antimony, mercury, and opal. Minor lignitic c
Authors
Arthur A. Bookstrom, Bruce R. Johnson, Theresa M. Cookro, Karen Lund, Kenneth C. Watts, Harley D. King, Merlin D. Kleinkopf, James A. Pitkin, J. David Sanchez, J. Douglas Causey
By
Energy and Minerals Mission Area, Energy Resources Program, Groundwater and Streamflow Information Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Preliminary estimates of benthic fluxes of dissolved metals in Coeur d'Alene Lake, Idaho
This report presents porewater and selected water column data collected from Coeur d'Alene Lake in September of 1992. Despite probable oxidation of the porewater samples during collection and handling, these data are used to calculate molecular diffusive fluxes of dissolved metals (that is, Zn, Pb, Cu, and Mn) across the sediment-water interface. While these data and calculations provide prelimina
Authors
Laurie S. Balistrieri
Map showing areas with potential for talc deposits in the Gravelly, Greenhorn, and Ruby Ranges and the Henrys Lake Mountains of southwestern Montana
For the last several years, Montana has been the leading talc producing state in the United States (U.S. Geological Survey, 1996). For example, in 1992 Montana supplied about 40 percent of the U.S. mine production of talc (Virta, 1992). All of this production has come from the large deposits of high purity talc in the southwestern part of the state. All Montana talc is currently (1997) extracted f
Authors
Bradley S. Van Gosen, Richard B. Berg, Jane M. Hammarstrom