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: 1924
Investigating a physical basis for spectroscopic estimates of leaf nitrogen concentration Investigating a physical basis for spectroscopic estimates of leaf nitrogen concentration
The reflectance spectra of dried and ground plant foliage are examined for changes directly due to increasing nitrogen concentration. A broadening of the 2.1-??m absorption feature is observed as nitrogen concentration increases. The broadening is shown to arise from two absorptions at 2.054 ??m and 2.172 ??m. The wavelength positions of these absorptions coincide with the absorption
Authors
R.F. Kokaly
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
Environmental studies of the World Trade Center area after the September 11, 2001 attack Environmental studies of the World Trade Center area after the September 11, 2001 attack
This web site describes the results of an interdisciplinary environmental characterization of the World Trade Center (WTC) area after September 11, 2001. Information presented in this site was first made available to the World Trade Center emergency response teams on September 18, 2001 (Thermal hot spot information), and September 27, 2001 (maps and compositional results). The Airborne...
Authors
Roger N. Clark, Robert O. Green, Gregg A. Swayze, Greg Meeker, Steve Sutley, Todd M. Hoefen, K. Eric Livo, Geoff Plumlee, Betina Pavri, Chuck Sarture, Steve Wilson, Phil Hageman, Paul Lamothe, J. Sam Vance, Joe Boardman, Isabelle Brownfield, Carol Gent, Laurie C. Morath, Joseph Taggart, Peter M. Theodorakos, Monique Adams
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
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
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
Application of geophysical techniques to minerals-related environmental problems Application of geophysical techniques to minerals-related environmental problems
No abstract available.
Authors
Ken Watson, David Fitterman, R. W. Saltus, Anne McCafferty, Gregg A. Swayze, Stan Church, Kathy Smith, Marty Goldhaber, Stan Robson, Pete McMahan
The distribution of MVT-related metals in ground water of the Ozark Plateaus region of the United States The distribution of MVT-related metals in ground water of the Ozark Plateaus region of the United States
No abstract available.
Authors
Lopaka Lee, Martin B. Goldhaber
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
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