Publications
Filter Total Items: 1432
Mosaic of digital raster Soviet topographic maps of Afghanistan Mosaic of digital raster Soviet topographic maps of Afghanistan
No abstract available.
Authors
Peter G. Chirico, Michael B. Warner
Fabric and texture at Siple Dome, Antarctica Fabric and texture at Siple Dome, Antarctica
Preferred c-axis orientations are present in the firn at Siple Dome, West Antarctica, and recrystallization begins as shallow as 200 m depth in ice below –20°C, based on digital analysis of c-axis fabrics, grain-sizes and other characteristics of 52 vertical thin sections prepared in the field from the kilometer-long Siple Dome ice core. The shallowest section analyzed, from 22 m, shows...
Authors
C. L. Diprinzio, Lawrence A. Wilen, R. B. Alley, J. J. Fitzpatrick, M. K. Spencer, A. J. Gow
Unusually low rates of slip on the Santa Rosa Range fault zone, northern Nevada Unusually low rates of slip on the Santa Rosa Range fault zone, northern Nevada
The Santa Rosa Range fault zone (SRRFZ) is one of the most topographically prominent normal fault systems in the northern Basin and Range province of the western United States. It has been assigned high rates of vertical slip by others and has been identified as a possible site of the future extension of the central Nevada seismic belt (CNSB). We use detailed trench mapping and...
Authors
S. F. Personius, S. A. Mahan
The Younger Dryas phase of Great Salt Lake, Utah, USA The Younger Dryas phase of Great Salt Lake, Utah, USA
Field investigations at the Public Shooting Grounds (a wildlife-management area on the northeastern shore of Great Salt Lake) and radiocarbon dating show that the Great Salt Lake rose to the Gilbert shoreline sometime between 12.9 and 11.2 cal ka. We interpret a ripple-laminated sand unit exposed at the Public Shooting Grounds, and dated to this time interval, as the nearshore sediments...
Authors
Charles G. Oviatt, D. M. Miller, J. P. McGeehin, C. Zachary, S. Mahan
U-Series isotopes as indicators of water/rock interaction in the unsaturated zone at Yucca Mountain, Nevada, USA U-Series isotopes as indicators of water/rock interaction in the unsaturated zone at Yucca Mountain, Nevada, USA
No abstract available.
Authors
James B. Paces, Leonid A. Neymark
Constraints on the geological history of the karst system in Southern Missouri, U.S.A. provided by radiogenic, cosmogenic and physical/chemical characteristics of doline fill Constraints on the geological history of the karst system in Southern Missouri, U.S.A. provided by radiogenic, cosmogenic and physical/chemical characteristics of doline fill
The Ozark Plateaus region of southern Missouri is underlain by dominantly carbonate marine platform rocks of Paleozoic age. The region has been sub-aerially exposed since the late Paleozoic and is characterized by extensive karst. To better understand the geologic history of this regional karst system, we examined the stratigraphic record preserved in the fill of a large doline near the...
Authors
David J. Waery, Richard W. Harrison, Robert B. Jacobson, Milan P. Javich, Shannon A. Mahan, David Wronkiewicz
Environments of northwestern North America before the last glacial maximum Environments of northwestern North America before the last glacial maximum
No abstract available.
Authors
John J. Clague, Rolf Mathewes, Thomas A. Ager
Topogrid Derived 10 Meter Resolution Digital Elevation Model of the Shenandoah National Park and Surrounding Region, Virginia Topogrid Derived 10 Meter Resolution Digital Elevation Model of the Shenandoah National Park and Surrounding Region, Virginia
Explanation The purpose of developing a new 10m resolution DEM of the Shenandoah National Park Region was to more accurately depict geologic structure, surfical geology, and landforms of the Shenandoah National Park Region in preparation for automated landform classification. Previously, only a 30m resolution DEM was available through the National Elevation Dataset (NED). During...
Authors
Peter G. Chirico, Seth D. Tanner
Reply to the letter to the editor from Huntley re Mayer and Mahan, 2004. Quaternary Research 61, 72–84 Reply to the letter to the editor from Huntley re Mayer and Mahan, 2004. Quaternary Research 61, 72–84
No abstract available.
Authors
J. H. Mayer, Shannon A. Mahan
Reply to the comment on “Physical and stable-isotope evidence for formation of secondary calcite and silica in the unsaturated zone, Yucca Mountain, Nevada”, by Y.V. Dublyansky, S.E. Smirnov and G.P. Palyanova Reply to the comment on “Physical and stable-isotope evidence for formation of secondary calcite and silica in the unsaturated zone, Yucca Mountain, Nevada”, by Y.V. Dublyansky, S.E. Smirnov and G.P. Palyanova
No abstract available.
Authors
Joseph F. Whelan, James B. Paces, Zell E. Peterman, Brian D. Marshall, Leonid A. Neymark
The geochemical and magnetic record of coal combustion products in West Virginia reservoir sediments and soils The geochemical and magnetic record of coal combustion products in West Virginia reservoir sediments and soils
Western West Virginia lies downwind from numerous coal-fired power plants along the Ohio River Valley. To test whether geochemical and mineralogical impacts from these power plants are detectable on the West Virginia landscape, we obtained reservoir cores, soils, and rocks from two separate sites in West Virginia, one in Harrison County (Hinkel and Deegan Reservoirs) and the other in...
Authors
Martin B. Goldhaber, Ted Callender, Richard L. Reynolds
Geology of Gunnison Gorge National Conservation Area, Delta and Montrose Counties, Colorado Geology of Gunnison Gorge National Conservation Area, Delta and Montrose Counties, Colorado
No abstract available.
Authors
Karl S. Kellogg, Wallace R. Hansen, Karen S. Tucker, D. Paco VanSistine