Publications
Filter Total Items: 7614
Geologic and geotechnical conditions adjacent to the Turnagain Heights landslide, Anchorage, Alaska Geologic and geotechnical conditions adjacent to the Turnagain Heights landslide, Anchorage, Alaska
No abstract available.
Authors
Randall G. Updike, H. W. Olsen, H. R. Schmoll, Y.K. Kharaka, K.H. Stokoe
Geologic and hydrologic investigations of a potential nuclear waste disposal site at Yucca Mountain, southern Nevada Geologic and hydrologic investigations of a potential nuclear waste disposal site at Yucca Mountain, southern Nevada
Crustal velocity sections based on two seismic-refraction profiles are presented for the area west of Yucca Mountain, Nye County, Nevada. The Crater Flat profile is interpreted in terms of six velocity layers ranging from 1.5 to 6.1 km/s. Interpretation of the Beatty profile reveals an escarpment near the northeast edge of Bare Mountain, where Paleozoic rocks are probably down-faulted...
A water-resources appraisal of the Mount Shasta area in northern California, 1985 A water-resources appraisal of the Mount Shasta area in northern California, 1985
Present Mount Shasta, California, area hydrologic characteristics were documented to compare future changes due to land use or volcanic activity. Lower flanks of Mount Shasta consist of broad aprons of pyroclastic-flow, debris flow, and fluvial deposits, with incised channels on upper parts of the mountain. Data include glacial areas and volumes, streamflow, sediment concentrations...
Authors
J. C. Blodgett, K.R. Poeschel, J.L. Thornton
Report on recommended list of structures for seismic instrumentation in the Boston Region Report on recommended list of structures for seismic instrumentation in the Boston Region
No abstract available.
Authors
Mehmet Çelebi
Hydrologic data for computation of sediment discharge: Toutle and North Fork Toutle Rivers near Mount St. Helens, Washington, water years 1980-84 Hydrologic data for computation of sediment discharge: Toutle and North Fork Toutle Rivers near Mount St. Helens, Washington, water years 1980-84
Immediately after the devastating May 18, 1980, eruption of Mount St. Helens, a program was initiated by the U.S. Geological Survey to study the streamflow and sediment characteristics of streams impacted by the eruption. Some of the data gathered in that program are presented in this report. Data are presented for two key sites in the Toutle River basin: North Fork Toutle River near Kid...
Authors
Dallas Childers, Stephen E. Hammond, William P. Johnson
Submarine topography of northeastern Papua New Guinea Submarine topography of northeastern Papua New Guinea
No abstract available
Authors
Thomas E. Chase, Barbara A. Seekins, J. D. Young, Shawn V. Dadisman
Source-rock evaluation of outcrop samples from Vanuatu (Malakula, Espiritu Santo, Maewo, and Pentecost) Source-rock evaluation of outcrop samples from Vanuatu (Malakula, Espiritu Santo, Maewo, and Pentecost)
Thirty-nine outcrop samples of mudstones, siltstones, and limestones were collected for source-rock evaluation of the sedimentary column in Vanuatu. Twenty-nine samples showing the least evidence of oxidation were selected for total organic analysis from the Miocene Matanui Group and Port Sandwich Formation in Malakula, and from the Miocene Ilava, Peteao, and Pelapa Formations in...
Authors
Binyamin Buchbinder, Robert B. Halley
Causes of varied sediment gravity flow types on the Alsek Prodelta, northeast Gulf of Alaska Causes of varied sediment gravity flow types on the Alsek Prodelta, northeast Gulf of Alaska
Slope failures and subsequent mass movements have been identified in Holocene glaciomarine sediment on declivities less than 1.3° on the Alsek prodelta, Gulf of Alaska. Isolated collapse features cover less than 10 percent of a nearshore sand deposit, in water depths less than 40 m. In contrast, sediment gravity flow deposits (disintegrative failures) cover more than 95 percent of a...
Authors
William C. Schwab, Homa J. Lee, Bruce F. Molnia
Large quaternary landslides in the central appalachian valley and ridge province near Petersburg, West Virginia Large quaternary landslides in the central appalachian valley and ridge province near Petersburg, West Virginia
Geological mapping and photointerpretation of side-looking airborne radar images and color-infrared aerial photographs reveal two large Quaternary landslides in the Valley and Ridge province of the central Appalachians near Petersburg, W. Va. The Elkhorn Mountain rock avalanche occurs on the thrust-faulted northwestern flank of the Elkhorn Mountain anticlinorium. A minimum of 7 × 106 m3...
Authors
C. Scott Southworth
Strontium-isotope stratigraphy of Enewetak Atoll Strontium-isotope stratigraphy of Enewetak Atoll
87Sr/86Sr ratios determined for samples from a 350 m core of Neogene lagoonal, shallow-water limestones from Enewetak Atoll display a remarkably informative trend. Like the recently published data for Deep Sea Drilling Project (DSDP) carbonates, 87Sr/86Sr at Enewetak increases monotonically but not smoothly from the early Miocene to the Pleistocene. The data show intervals of little or...
Authors
K.R. Ludwig, Robert B. Halley, Kathleen R. Simmons, Zell E. Peterman