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: 2018
Water-quality, biology, and streambed sediment data and preliminary geochemical interpretations for streams in the upper Prickly Pear Creek watershed, Montana, 2000 Water-quality, biology, and streambed sediment data and preliminary geochemical interpretations for streams in the upper Prickly Pear Creek watershed, Montana, 2000
No abstract available.
Authors
Terry L. Klein, Joanna N. Thamke, Aida M. Farag
Databases and simplified geology for mineralized areas, claims, mines and prospects in Wyoming Databases and simplified geology for mineralized areas, claims, mines and prospects in Wyoming
No abstract available.
Authors
Anna B. Wilson, Terry L. Klein, William D. Heran
Construction and destruction of crinoidal mudmounds on Mississippian Antler forebulge, east of Eureka, Nevada Construction and destruction of crinoidal mudmounds on Mississippian Antler forebulge, east of Eureka, Nevada
No abstract available.
Authors
Charles Sandberg, Forrest G. Poole, Jared R. Morrow
Mars' "White Rock" feature lacks evidence of an aqueous origin: Results from Mars Global Surveyor Mars' "White Rock" feature lacks evidence of an aqueous origin: Results from Mars Global Surveyor
The “White Rock” feature on Mars has long been viewed as a type example for a Martian playa largely because of its apparent high albedo along with its location in a topographic basin (a crater). Data from the Mars Global Surveyor Thermal Emission Spectrometer (TES) demonstrate that White Rock is not anomalously bright relative to other Martian bright regions, reducing the significance of...
Authors
S. W. Ruff, P. R. Christensen, Roger N. Clark, H. H. Kieffer, M. C. Malin, J. L. Bandfield, B. M. Jakosky, M. D. Lane, M. T. Mellon, M. A. Presley
A procedural manual for measurement of uranium and thorium isotopes utilizing the USGS-Stanford Finnegan Mat 262 A procedural manual for measurement of uranium and thorium isotopes utilizing the USGS-Stanford Finnegan Mat 262
Over the past several decades investigators have extensively examined the 238U-234U- 230Th systematics of a variety of geologic materials using alpha spectroscopy. Analytical uncertainty for 230Th by alpha spectroscopy has been limited to about 2% (2σ). The advantage of thermal ionization mass spectroscopy (TIMS), introduced by Edwards and co-workers in the late 1980’s is the increased
Authors
Donald D. Shamp
Log for Joint SEPM-Colorado Scientific Society field trip, September 20-21, 1986: Late Paleozoic sedimentation and Laramide tectonics of the Sangre de Cristo Range, from Westcliffe to Crestone, Colorado Log for Joint SEPM-Colorado Scientific Society field trip, September 20-21, 1986: Late Paleozoic sedimentation and Laramide tectonics of the Sangre de Cristo Range, from Westcliffe to Crestone, Colorado
This trip will cross the northern Sangre de Cristo Range, from Westcliffe to Crestone, Colorado, by way of the Hermit Pass Road and the Rito Alto pack trail (Fig. 1 below; road and trail shown on Fig. 2). The traverse is designed to give the geologist a sample of the structure and stratigraphy of this part of the range. Emphasis will be on the relationship between the horst of the Sangre...
Authors
David A. Lindsey
Compelling new evidence for Paleocene dinosaurs in the Ojo Alamo Sandstone, San Juan Basin, New Mexico and Colorado, USA Compelling new evidence for Paleocene dinosaurs in the Ojo Alamo Sandstone, San Juan Basin, New Mexico and Colorado, USA
No abstract available.
Authors
James E. Fassett, Spencer G. Lucas, Robert A. Zielinski, James R. Budahn
Quaternary geochronology using combined U-Pb and U-series methods: The opal perspective Quaternary geochronology using combined U-Pb and U-series methods: The opal perspective
No abstract available.
Authors
Leonid A. Neymark, Y. V. Amelin
Silurian and Devonian carbonate-shelf rocks and Lower Jurassic sequence near Rancho Placeritos West-Central Sonora Silurian and Devonian carbonate-shelf rocks and Lower Jurassic sequence near Rancho Placeritos West-Central Sonora
No abstract available.
Authors
Forrest G. Poole, R. Amaya-Martinez, William R. Page
The Sonora Orogen in the Barita de Sonora mine area east of Mazatán, central Sonora The Sonora Orogen in the Barita de Sonora mine area east of Mazatán, central Sonora
No abstract available.
Authors
Forrest G. Poole, R. Amaya-Martinez
The Goldfield mining district, Nevada: an acid sulfate bonanza gold deposit The Goldfield mining district, Nevada: an acid sulfate bonanza gold deposit
This paper provides an introduction to the geology, ore deposits, and fluid geochemistry of the Goldfield mining district, Esmerelda and Nye Counties, Nevada. Also included is a brief interpretation of mineral maps of the western half of the district which were recently produced from remotely sensed imagery acquired by the Airborne Visible Infrared Imaging Spectrometer (AVIRIS) systems...
Authors
Barnaby W. Rockwell
Assessment of the alluvial sediments in the Big Thompson River Valley, Colorado Assessment of the alluvial sediments in the Big Thompson River Valley, Colorado
To obtain subsurface geologic information about the alluvium in the Big Thompson River valley, S-wave refraction data were collected along three roads that cross the valley. The refraction data were used to estimate velocities and thickness for a layered-earth model; from these models, three cross sections of the river valley were constructed. These cross sections show the thickness and...
Authors
Adrienne Barnett, Karl J. Ellefsen