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: 1939
Potential effects of alpha-recoil on uranium-series dating of calcrete Potential effects of alpha-recoil on uranium-series dating of calcrete
Evaluation of paleosol ages in the vicinity of Yucca Mountain, Nevada, at the time the site of a proposed high-level nuclear waste repository, is important for fault-displacement hazard assessment. Uranium-series isotope data were obtained for surface and subsurface calcrete samples from trenches and boreholes in Midway Valley, Nevada, adjacent to Yucca Mountain. 230Th/U ages of 33...
Authors
L.A. Neymark
Fire and brimstone continues to shape Yellowstone Lake: connecting geology and past climates with today's biodiversity Fire and brimstone continues to shape Yellowstone Lake: connecting geology and past climates with today's biodiversity
No abstract available.
Authors
Susan Kelly, Lisa Morgan, Stephanie McGinnis
A carbon isotopic and sedimentological record of the latest Devonian (Famennian) from the Western U.S. and Germany A carbon isotopic and sedimentological record of the latest Devonian (Famennian) from the Western U.S. and Germany
New carbon isotopic data from upper Famennian deposits in the western United States reveal two previously unrecognized major positive isotopic excursions. The first is an abrupt ~ 3‰ positive excursion, herein referred to as ALFIE (A Late Famennian Isotopic Excursion), recorded in two sections of the Pinyon Peak Limestone of north-central Utah. Integration of detailed chemostratigraphic...
Authors
P.M. Myrow, J.V. Strauss, J.R. Creveling, K.R. Sicard, R. Ripperdan, Charles Sandberg, S. Hartenfels
Episodic intrusion, internal differentiation, and hydrothermal alteration of the Miocene Tatoosh intrusive suite south of Mount Rainier, Washington Episodic intrusion, internal differentiation, and hydrothermal alteration of the Miocene Tatoosh intrusive suite south of Mount Rainier, Washington
The Miocene Tatoosh intrusive suite south of Mount Rainier is composed of three broadly granodioritic plutons that are manifestations of ancestral Cascades arc magmatism. Tatoosh intrusive suite plutons have individually diagnostic characteristics, including texture, mineralogy, and geochemistry, and apparently lack internal contacts. New ion-microprobe U-Pb zircon ages indicate...
Authors
Edward A. du Bray, Charles R. Bacon, David A. John, Joseph L. Wooden, Frank K. Mazdab
High-resolution well-log derived dielectric properties of gas-hydrate-bearing sediments, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope High-resolution well-log derived dielectric properties of gas-hydrate-bearing sediments, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope
A dielectric logging tool, electromagnetic propagation tool (EPT), was deployed in 2007 in the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well (Mount Elbert Well), North Slope, Alaska. The measured dielectric properties in the Mount Elbert well, combined with density log measurements, result in a vertical high-resolution (cm-scale) estimate of gas hydrate saturation. Two...
Authors
Y. Sun, D. Goldberg, Timothy S. Collett, R. Hunter
Thermal structure and dynamics of Saturn's northern springtime disturbance Thermal structure and dynamics of Saturn's northern springtime disturbance
Saturn’s slow seasonal evolution was disrupted in 2010–2011 by the eruption of a bright storm in its northern spring hemisphere. Thermal infrared spectroscopy showed that within a month, the resulting planetary-scale disturbance had generated intense perturbations of atmospheric temperatures, winds, and composition between 20° and 50°N over an entire hemisphere (140,000 kilometers). The
Authors
L.N. Fletcher, B.E. Hesman, P.G.J. Irwin, K. H. Baines, T.W. Momary, A. Sanchez-Lavega, F.M. Flasar, P.L. Read, G.S. Orton, A. Simon-Miller, R. Hueso, G.L. Bjoraker, A. Mamoutkine, Rio-Gaztelurrutia Del, J.M. Gomez, B. Buratti, R. N. Clark, P. D. Nicholson, Christophe Sotin
Remote compositional analysis of lunar olivine-rich lithologies with Moon Mineralogy Mapper (M3) spectra Remote compositional analysis of lunar olivine-rich lithologies with Moon Mineralogy Mapper (M3) spectra
A systematic approach for deconvolving remotely sensed lunar olivine‐rich visible to near‐infrared (VNIR) reflectance spectra with the Modified Gaussian Model (MGM) is evaluated with Chandrayaan‐1 Moon Mineralogy Mapper (M3) spectra. Whereas earlier studies of laboratory reflectance spectra focused only on complications due to chromite inclusions in lunar olivines, we develop a...
Authors
P.J. Isaacson, C.M. Pieters, S. Besse, Roger N. Clark, J.W. Head, R.L. Klima, J.F. Mustard, N.E. Petro, M.I. Staid, J.M. Sunshine, L.A. Taylor, K.G. Thaisen, S. Tompkins
Helicopter magnetic and electromagnetic surveys at Mounts Adams, Baker and Rainier, Washington: implications for debris flow hazards and volcano hydrology Helicopter magnetic and electromagnetic surveys at Mounts Adams, Baker and Rainier, Washington: implications for debris flow hazards and volcano hydrology
High‐resolution helicopter magnetic and electromagnetic (HEM) data flown over the rugged, ice‐covered Mt. Adams, Mt. Baker and Mt. Rainier volcanoes (Washington), reveal the distribution of alteration, water and ice thickness essential to evaluating volcanic landslide hazards. These data, combined with geological mapping and rock property measurements, indicate the presence of...
Authors
Carol A. Finn, Maria Deszcz-Pan
Titan's cloud seasonal activity from winter to spring with Cassini/VIMS Titan's cloud seasonal activity from winter to spring with Cassini/VIMS
Since Saturn orbital insertion in July 2004, the Cassini orbiter has been observing Titan throughout most of the northern winter season (October 2002–August 2009) and the beginning of spring, allowing a detailed monitoring of Titan’s cloud coverage at high spatial resolution with close flybys on a monthly basis. This study reports on the analysis of all the near-infrared images of Titan...
Authors
S. Rodriguez, S. Le Mouelic, P. Rannou, Christophe Sotin, R. H. Brown, J. W. Barnes, C.A. Griffith, J. Burgalat, K. H. Baines, B. J. Buratti, R. N. Clark, P. D. Nicholson
And last comes XYZ And last comes XYZ
Catesian Coordinates can be used to specify the position of any point in three-dimensional space by measuring its distances from three mutually perpendicular planes.
Authors
Bill Langer
P is for pit P is for pit
A gravel pit that was a source of happy childhood memories showcases the evolution of mining technology.
Authors
W. H. Langer