Publications
Filter Total Items: 1492
Ribbon Cliff landslide Washington, and the earthquake of 14 December 1872 Ribbon Cliff landslide Washington, and the earthquake of 14 December 1872
Estimates of the epicentral location and maximum intensity of the earthquake of 14 December 1872, the largest and oldest historic earthquake documented in the Pacific Northwest, are controversial largely because the estimates are based on ground effects. The Ribbon Cliff landslide is one of the more critical ground effects used to argue that the epicenter was in the vicinity of Lake...
Authors
Richard F. Madole, Robert L. Schuster, Andrei M. Sarna-Wojcicki
Spatial and temporal patterns of late quaternary eolian deposition, Eastern Colorado, U.S.A Spatial and temporal patterns of late quaternary eolian deposition, Eastern Colorado, U.S.A
Eolian sediment covers about 60% of Colorado east of the Rocky Mountains; about 30% of the sediment is sand and 70% is loess. Initially, flood plains were the principal sources of eolian sediment, but during the Holocene, dunes formed from older eolian sand and alluvium on uplands. Since latest Pleistocene time, dominant dune-forming winds have been northwesterly in the northern part of...
Authors
Richard F. Madole
Bermuda solution pipe soils: A geochemical evaluation of eolian parent materials Bermuda solution pipe soils: A geochemical evaluation of eolian parent materials
No abstract available.
Authors
Stanley R. Herwitz, Daniel R. Muhs
Geomorphic and geochemical evidence for the source of sand in the Algodones dunes, Colorado Desert, southeastern California Geomorphic and geochemical evidence for the source of sand in the Algodones dunes, Colorado Desert, southeastern California
No abstract available.
Authors
D.R. Muhs, C. A. Bush, S.D. Cowherd, S. Mahan
Strontium isotope geochemistry of soil and playa deposits near Yucca Mountain, Nevada Strontium isotope geochemistry of soil and playa deposits near Yucca Mountain, Nevada
The isotopic composition of strontium contained in the carbonate fractions of soils provides an excellent tracer which can be used to test models for their origin. This paper reports data on surface coatings and cements, eolian sediments, playas and alluvial fan soils which help to constrain a model for formation of the extensive calcretes and fault infillings in the Yucca Mountain...
Authors
Brian D. Marshall, Shannon A. Mahan
Geology and occurrence of radon Geology and occurrence of radon
The accumulation of radon indoors is commonly due to movement of radon from adjacent soil and rock into a building foundation through joints, utility openings, cracks, or porous block walls. When air pressure inside the building is lower than that in the soil, pressure-driven flow of radonbearing soil gas can occur (see Chapter 2). Whether or not an indoor radon problem results depends...
Authors
R. Randall Schumann, Linda C. Gundersen, A. B. Tanner
Preliminary U-series disequilibrium and thermoluminescence ages of surficial deposits and paleosols associated with Quaternary faults, eastern Yucca Mountain Preliminary U-series disequilibrium and thermoluminescence ages of surficial deposits and paleosols associated with Quaternary faults, eastern Yucca Mountain
No abstract available.
Authors
James B. Paces, Christopher M. Menges, B. Wildmann, J. R. Wesling, Charles A. Bush, Kiyoto Futa, H. T. Millard, P. B. Maat, John W. Whitney
Varve calibrated records of carbonate and organic carbon accumulation over the last 2000 years in the Black Sea Varve calibrated records of carbonate and organic carbon accumulation over the last 2000 years in the Black Sea
Sedimentologic and geochemical studies of box and gravity cores recovered from the Black Sea during the first leg of a multileg international Black Sea expedition in 1988 allow reconstruction of the basinwide Holocene environmental history of the Black Sea. In the deeper parts of the basin, box cores typically recovered a flocculent surface layer (“fluff”), laminated coccolith marls of...
Authors
Michael A. Arthur, Walter E. Dean, E.D. Neff, B.J. Hay, J. King, Glenn A. Jones
New uranium-series ages of the Waimanalo Limestone, Oahu, Hawaii: implications for sea level during the last interglacial period New uranium-series ages of the Waimanalo Limestone, Oahu, Hawaii: implications for sea level during the last interglacial period
The Waimanalo Formation (limestone) of Oahu has been correlated with the last interglacial period based on U-series dating of corals by T.-L. Ku and colleagues. The limestone consists of growth-position corals and overlying coral conglomerate. An apparent bimodal distribution of ages for the growth-position corals (mean age = 133 ka) and the overlying coral conglomerate (mean age = 119...
Authors
D.R. Muhs, Barney J. Szabo
Magnetization and geochemistry of greigite-bearing Cretaceous strata, North Slope basin, Alaska Magnetization and geochemistry of greigite-bearing Cretaceous strata, North Slope basin, Alaska
No abstract available.
Authors
Richard L. Reynolds, Michele L. Tuttle, Cynthia A. Rice, Neil S. Fishman, John A. Karachewski, David M. Sherman
Preliminary map showing quaternary faults and landslides in the Cliff Lake 15' quadrangle, Madison County, Montana Preliminary map showing quaternary faults and landslides in the Cliff Lake 15' quadrangle, Madison County, Montana
No abstract available.
Authors
J. M. O’Neill, T. H. LeRoy, Paul E. Carrara
U-Pb provenance ages of shocked zircons from the K-T boundary, Raton Basin, Colorado U-Pb provenance ages of shocked zircons from the K-T boundary, Raton Basin, Colorado
No abstract available.
Authors
Wayne R. Premo, G. A. Izett