Publications
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Report on recommended list of structures for seismic instrumentation in San Bernardino County, California Report on recommended list of structures for seismic instrumentation in San Bernardino County, California
No abstract available.
Authors
G. Brady, Mehmet Çelebi, C. Rojahn, Wilfred Iwan, G. Hart, G. Pardoen, L. Schoelkopf, R. Haskell, K. Topping, Erdal Safak, R.P. Maley
Description and preliminary testing of the CDSN Seismic Sensor Systems Description and preliminary testing of the CDSN Seismic Sensor Systems
The China Digital Seismograph Network (CDSN) is being designed and installed to provide the People's Republic of China with the facilities needed to create a national digital database for earthquake research. The CDSN, which is being developed jointly by the PRC State Seismological Bureau and the U.S. Geological Survey, will consist initially of nine digitally-recording seismograph...
Authors
Jon Peterson, Edwin E. Tilgner
Feasibility of a nationwide program for the identification and delineation of hazards from mud flows and other landslides; Chapter D, The Economics of landslide mitigation strategies in Cincinnati, Ohio : a methodology for benefit-cost analysis Feasibility of a nationwide program for the identification and delineation of hazards from mud flows and other landslides; Chapter D, The Economics of landslide mitigation strategies in Cincinnati, Ohio : a methodology for benefit-cost analysis
No abstract available.
Authors
Richard L. Bernknopf, David S. Brookshire, Russell H. Campbell, Carl D. Shapiro, Robert W. Fleming
Preliminary response activities and recommendations of the USGS Landslide Hazard Research Team to the Puerto Rico landslide disaster of October 7, 1985 Preliminary response activities and recommendations of the USGS Landslide Hazard Research Team to the Puerto Rico landslide disaster of October 7, 1985
No abstract available.
Authors
R. H. Campbell, Darrell G. Herd, R.M. Alonso
Bibliography of United States landslide maps and reports Bibliography of United States landslide maps and reports
No abstract available.
Authors
C.S. Alger, E. E. Brabb
Occurrence and preservation of Eocene squamariacean and coralline rhodoliths: Eau, Tonga Occurrence and preservation of Eocene squamariacean and coralline rhodoliths: Eau, Tonga
A widespread rhodolith facies occurs within middle Eocene limestones of Eua, Tonga (Fig. 1). These limestones, first described by Hoffmeister (1932), represent a portion of a broad, early Tertiary platform that developed in the Tonga area prior to disruption and uplift by later Tertiary plate movements (Kroenke and Tongilava 1975). Algal rhodoliths form beds several meters thick within...
Authors
Binyamin Buchbinder, Robert B. Halley
Bottom current and sediment transport on San Pedro Shelf, California Bottom current and sediment transport on San Pedro Shelf, California
GEOPROBE (Geological Processes Bottom Environmental) tripods were used to measure bottom currents, pressure, and light transmission and scattering and to obtain time-series photographs of the sea floor at depths of 23 m and 67 m on San Pedro shelf between 18 April and 6 June 1978. Winds were light ( 5 m/s) with a mean direction from the southwest throughout the measurement period. Hourly...
Authors
David E. Drake, David A. Cacchione, Herman A. Karl
Ferromanganese crusts from Necker Ridge, Horizon Guyot and S.P. Lee Guyot: Geological considerations Ferromanganese crusts from Necker Ridge, Horizon Guyot and S.P. Lee Guyot: Geological considerations
Necker Ridge, Horizon Guyot and S.P. Lee Guyot in the Central Pacific were sampled, seismically surveyed, and photographed by bottom cameras in order to better understand the distribution, origin, and evolution of ferromanganese crusts. Necker Ridge is over 600 km long with a rugged crest, pods of sediment to 146 m thick, slopes that average 12° to 20°, and debris aprons that cover some...
Authors
James R. Hein, Frank T. Manheim, William C. Schwab, Alice S. Davis
Why deposits of longitudinal dunes are rarely recognized in the geologic record Why deposits of longitudinal dunes are rarely recognized in the geologic record
Dunes that are morphologically of linear type, many of which are probably of longitudinal type in a morphodynamic sense, are common in modern deserts, but their deposits are rarely identified in aeolian sandstones. One reason for non-recognition of such dunes is that they can migrate laterally when they are not exactly parallel to the long-term sand-transport direction, thereby...
Authors
David M. Rubin, Ralph E. Hunter
Foraminiferal, lithic, and isotopic changes across four major unconformities at Deep Sea Drilling Project Site 548, Goban Spur Foraminiferal, lithic, and isotopic changes across four major unconformities at Deep Sea Drilling Project Site 548, Goban Spur
Sediment samples taken at close intervals across four major unconformities (middle Miocene/upper Miocene, lower Oligocene/upper Oligocene, lower Eocene/upper Eocene, lower Paleocene/upper Paleocene) at DSDP-IPOD Site 548, Goban Spur, reveal that coeval biostratigraphic gaps, sediment discontinuities, and seismic unconformities coincide with postulated low stands of sea level...
Authors
C. Wylie Poag, Leslie A. Reynolds, James M. Mazzullo, Loyd D. Keigwin
Dolomitization in a mixing zone of near-seawater composition, Late Pleistocene, northeastern Yucatan Peninsula Dolomitization in a mixing zone of near-seawater composition, Late Pleistocene, northeastern Yucatan Peninsula
Patches of dolomite occur in cores of reefal limestone from the shallow subsurface on the northeastern coast of the Yucatan Peninsula. This limestone accumulated during an interglacial high stand of sea level about 200,000 years ago. Dolomitization was preceded by freshwater diagenesis, including precipitation of sparry calcite cement, stabilization of Mg-calcitic skeletal fragments, and...
Authors
W. C. Ward, Robert B. Halley