Publications
Listed below are publication products directly associated with the Geology, Energy & Minerals Science Center:
Filter Total Items: 1240
Major- and trace-element concentrations in soils from two continental-scale transects of the United States and Canada Major- and trace-element concentrations in soils from two continental-scale transects of the United States and Canada
This report contains major- and trace-element concentration data for soil samples collected from 265 sites along two continental-scale transects in North America. One of the transects extends from northern Manitoba to the United States-Mexico border near El Paso, Tex. and consists of 105 sites. The other transect approximately follows the 38th parallel from the Pacific coast of the...
Authors
David B. Smith, William F. Cannon, Laurel G. Woodruff, Robert G. Garrett, Rodney Klassen, James E. Kilburn, John D. Horton, Harley D. King, Martin B. Goldhaber, Jean M. Morrison
U.S. Geological Survey 2005 oil and gas resource assessment of the central North Slope, Alaska: Play maps and results U.S. Geological Survey 2005 oil and gas resource assessment of the central North Slope, Alaska: Play maps and results
No abstract available.
Authors
Christopher P. Garrity, David W. Houseknecht, Kenneth J. Bird, Christopher J. Potter, Thomas E. Moore, Philip H. Nelson, Christopher J. Schenk
Acid-rock drainage at Skytop, Centre County, Pennsylvania, 2004 Acid-rock drainage at Skytop, Centre County, Pennsylvania, 2004
Recent construction for Interstate Highway 99 (I?99) exposed pyrite and associated Zn-Pb sulfide minerals beneath a >10-m thick gossan to oxidative weathering along a 40-60-m deep roadcut through a 270-m long section of the Ordovician Bald Eagle Formation at Skytop, near State College, Centre County, Pennsylvania. Nearby Zn-Pb deposits hosted in associated sandstone and limestone in...
Authors
Jane M. Hammarstrom, Keith Brady, Charles A. Cravotta
Virginia aeromagnetic and gravity maps and data: A web site for distribution of data Virginia aeromagnetic and gravity maps and data: A web site for distribution of data
No abstract available.
Authors
Stephen L. Snyder
U-Pb zircon ages and Pb isotope geochemistry of gold deposits in the Carolina slate belt of South Carolina U-Pb zircon ages and Pb isotope geochemistry of gold deposits in the Carolina slate belt of South Carolina
Volcanic rocks of the Persimmon Fork Formation host the largest known gold mines of the Carolina slate belt. U-Pb (SHRIMP) zircon ages have been obtained from rocks closely associated with pyrite-enargite-gold deposits at Brewer (quartz-topaz rhyolite breccia from the argillic alteration zone in the Brewer pit and felsic ash-flow tuff from the quartz sericite alteration zone), from the
Authors
Robert A. Ayuso, Joseph L. Wooden, Nora K. Foley, Robert R. Seal, A. Krishna Sinha
Oceanic Pb-isotopic sources of Proterozoic and Paleozoic volcanogenic massive sulfide deposits on Prince of Wales Island and vicinity, southeastern Alaska Oceanic Pb-isotopic sources of Proterozoic and Paleozoic volcanogenic massive sulfide deposits on Prince of Wales Island and vicinity, southeastern Alaska
Volcanogenic massive sulfide (VMS) deposits on Prince of Wales Island and vicinity in southeastern Alaska are associated with Late Proterozoic through Cambrian volcanosedimentary rocks of the Wales Group and with Ordovician through Early Silurian felsic volcanic rocks of the Moira Sound unit (new informal name). The massive sulfide deposits in the Wales Group include the Big Harbor...
Authors
Robert A. Ayuso, Susan M. Karl, John F. Slack, Peter J. Haeussler, Peter E. Bittenbender, Gregory A. Wandless, Anna Colvin
Tar yields from low-temperature carbonization of coal facies from the Powder River Basin, Wyoming, USA Tar yields from low-temperature carbonization of coal facies from the Powder River Basin, Wyoming, USA
Tar yields from low-temperature carbonization correlate with the amount of crypto-eugelinite in samples selected to represent petrographically distinct coal facies of the Wyodak-Anderson coal zone. Tar yields from Fischer Assay range from
Authors
Ronald W. Stanton, Peter D. Warwick, Sharon M. Swanson
A calibration pad facility for gamma-ray spectrometers at the U.S. Geological Survey in Reston, Virginia A calibration pad facility for gamma-ray spectrometers at the U.S. Geological Survey in Reston, Virginia
No abstract available.
Authors
Joseph S. Duval1, Stephen L. Snyder
Secondary sulfate minerals associated with acid drainage in the eastern US: Recycling of metals and acidity in surficial environments Secondary sulfate minerals associated with acid drainage in the eastern US: Recycling of metals and acidity in surficial environments
Weathering of metal-sulfide minerals produces suites of variably soluble efflorescent sulfate salts at a number of localities in the eastern United States. The salts, which are present on mine wastes, tailings piles, and outcrops, include minerals that incorporate heavy metals in solid solution, primarily the highly soluble members of the melanterite, rozenite, epsomite, halotrichite...
Authors
J. M. Hammarstrom, R.R. Seal, A. L. Meier, J.M. Kornfeld
Geochemistry and jasper beds from the Ordovician Løkken ophiolite, Norway: origin of proximal and distal siliceous exhalites Geochemistry and jasper beds from the Ordovician Løkken ophiolite, Norway: origin of proximal and distal siliceous exhalites
Stratiform beds of jasper (hematitic chert), composed essentially of SiO2 (69–95 wt %) and Fe2O3 (3–25 wt %), can be traced several kilometers along strike in the Ordovician Løkken ophiolite, Norway. These siliceous beds are closely associated with volcanogenic massive sulfide (VMS) deposits and are interpreted as sea-floor gels that were deposited by fallout from hydrothermal plumes in...
Authors
Tor Grenne, John F. Slack
Geology and nonfuel mineral deposits of Greenland, Europe, Russia, and northern Central Asia Geology and nonfuel mineral deposits of Greenland, Europe, Russia, and northern Central Asia
No abstract available.
Authors
Warren J. Nokleberg, Walter J. Bawiec, Jeff L. Doebrich, Bruce R. Lipin, Robert J. Miller, Greta J. Orris, Michael L. Zientek
Preliminary integrated geologic map databases for the United States: Minnesota, Wisconsin, Michigan, Illinois, and Indiana Preliminary integrated geologic map databases for the United States: Minnesota, Wisconsin, Michigan, Illinois, and Indiana
The growth in the use of Geographic Information Systems (GIS) has highlighted the need for regional and national digital geologic maps attributed with age and lithology information. Such maps can be conveniently used to generate derivative maps for purposes including mineral-resource assessment, metallogenic studies, tectonic studies, and environmental research. This Open-File Report is...
Authors
Suzanne W. Nicholson, Connie L. Dicken, Michael P. Foose, Julie Mueller