Publications
Filter Total Items: 1492
Coordinated strike-slip and normal faulting in the Southern Ozark dome of Northern Arkansas: Deformation in a late Paleozoic foreland Coordinated strike-slip and normal faulting in the Southern Ozark dome of Northern Arkansas: Deformation in a late Paleozoic foreland
Structures that formed on the southern flank of the Ozark dome, in the foreland of the late Paleozoic Ouachita orogeny, have received little modern study. New mapping of the western Buffalo River region of northern Arkansas identifies diversely oriented faults and monoclinal folds that displace the generally flat lying Mississippian Boone Formation over a 180 m elevation range. Kinematic
Authors
M.R. Hudson
Geochemical evidence for an Eolian sand dam across the North and South Platte rivers in Nebraska Geochemical evidence for an Eolian sand dam across the North and South Platte rivers in Nebraska
Geochemical and geomorphic data from dune fields in southwestern Nebraska provide new evidence that the Nebraska Sand Hills once migrated across the North and South Platte rivers and dammed the largest tributary system to the Missouri River. The Lincoln County and Imperial dune fields, which lie downwind of the South Platte River, have compositions intermediate between the Nebraska Sand...
Authors
Daniel R. Muhs, James B. Swinehart, David B. Loope, Josh Been, Shannon Mahan, Charles A. Bush
Pb Isotopic Systematics of Lunar Highland Rocks (>3.9 Ga): Constraints on Early Lunar Evolution Pb Isotopic Systematics of Lunar Highland Rocks (>3.9 Ga): Constraints on Early Lunar Evolution
No abstract available.
Authors
Wayne R. Premo, M. Tatsumoto, Keiji Misawa, N. Nakamura, N. Kita
Isotope hydrology of ground-water flow systems, southern Nevada Isotope hydrology of ground-water flow systems, southern Nevada
No abstract available.
Authors
James B. Paces, Zell E. Peterman
Quantitative paleoclimatic reconstructions from late Pleistocene plant macrofossils of the Yucca Mountain region Quantitative paleoclimatic reconstructions from late Pleistocene plant macrofossils of the Yucca Mountain region
Plant macrofossil assemblages recovered from packrat (Neotoma) middens of late Pleistocene age from the present-day Mojave Desert of southern Nevada contain plant species that today live at higher elevations and/or farther north than the midden collection sites. Previous reconstructions of late Pleistocene climates from packrat midden assemblages in this region (Spaulding, 1985) assessed...
Authors
R.S. Thompson, K. H. Anderson, P. J. Bartlein
Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America
This atlas explores the continental-scale relations between the geographic ranges of woody plant species and climate in North America. A 25-km equal-area grid of modern climatic and bioclimatic parameters was constructed from instrumental weather records. The geographic distributions of selected tree and shrub species were digitized, and the presence or absence of each species was...
Authors
Robert S. Thompson, Katherine H. Anderson, Patrick J. Bartlein
Constraints on Quaternary unsaturated- and saturated-zone hydrology from geochronological and isotopic studies of calcite and silica, Yucca Mountain, Nevada Constraints on Quaternary unsaturated- and saturated-zone hydrology from geochronological and isotopic studies of calcite and silica, Yucca Mountain, Nevada
No abstracts available.
Authors
James B. Paces, Zell E. Peterman, Leonid A. Neymark, J. F. Whelan, Brian D. Marshall
Conditions for bubble elongation in cold ice-sheet ice Conditions for bubble elongation in cold ice-sheet ice
Highly elongated bubbles are sometimes observed in ice-sheet ice. Elongation is favored by rapid ice deformation, and opposed by diffusive processes. We use simple models to show that vapor transport dominates diffusion except possibly very close to the melting point, and that latent-heat effects are insignificant. Elongation is favored by larger bubbles at pore close-off, but is nearly
Authors
R. B. Alley, J. J. Fitzpatrick
Sand dunes of the northern Great Plains of Canada and the United States Sand dunes of the northern Great Plains of Canada and the United States
No abstract available.
Authors
D.R. Muhs, S.A. Wolfe
Geologic map of the Oasis Valley basin and vicinity, Nye County, Nevada Geologic map of the Oasis Valley basin and vicinity, Nye County, Nevada
No abstract available.
Authors
Christopher J. Fridrich, S.A. Minor, P. L. Ryder, J. L. Slate, R.G. Warren, T.G. Hildenbrand, D.A. Sawyer, P. P. Orkild
U-Pb age evidence for long-term stability of the unsaturated zone at Yucca Mountain U-Pb age evidence for long-term stability of the unsaturated zone at Yucca Mountain
No abstract available.
Authors
Leonid A. Neymark, Y. V. Amelin, James B. Paces, Zell E. Peterman
Secondary minerals record past percolation flux at Yucca Mountain, Nevada Secondary minerals record past percolation flux at Yucca Mountain, Nevada
No abstract available.
Authors
Brian D. Marshall, James B. Paces, Leonid A. Neymark, J. F. Whelan, Zell E. Peterman