Publications
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The case for planetary sample return missions
The essential role of planetary sample studies in exploration of the solar system has been well established “Drake et al., 1987”. As part of the larger pursuit of comparative planetology, samples of other rocky planets (Mercury, Venus, Mars), planetary satellites, asteroids, and comets should reveal much about the materials and processes that formed Earth. In that context, Mars is an especially ap
Authors
James L. Gooding, M. H. Carr, Christopher P McKay
Geologic analyses of Shuttle Imaging Radar (SIR-B) data of Kilauea Volcano, Hawaii
Analyses of imaging radar data of volcanic terranes on Earth and Venus have emphasized the need for a clearer understanding of how these data can be most effectively used to accomplish important volcanological goals, including the interpretation of eruptive styles and the characterization of the geologic history of volcanic centers. The second Shuttle Imaging Radar experiment (SIR-B) obtained two
Authors
Lisa R. Gaddis, Peter J. Mouginis-Mark, Robert B. Singer, Verne Kaupp
Geophysical framework of the continental United States: Progress, problems, and opportunities for research
Significant progress has been made over the past five decades in determining the geophysical framework of the continental United States. Highlights include detailed maps of gravity and aeromagnetic anomalies, heat flow, crustal thickness, seismicity, state of stress, and paleomagnetic pole positions. Important tectonic insights have come from earthquake studies, and from knowledge of lithospheric
Authors
Walter D. Mooney, L. C. Pakiser
Regional crustal structure and tectonics of the Pacific Coastal States: California, Oregon, and Washington
The Pacific Coastal States form a complex geologic environment in which the crust and lithosphere have been continuously reworked. We divide the region tectonically into the southern transform regime of the San Andreas fault and the northern subduction regime, and summarize the geophysical framework with contour maps of crustal thickness, lithospheric and seismicity cross sections, and results fro
Authors
Walter D. Mooney, Craig S. Weaver
Seismic methods for determining earthquake source parameters and lithospheric structure
The seismologic methods most commonly used in studies of earthquakes and the structure of the continental lithosphere are reviewed in three main sections: earthquake source parameter determinations, the determination of earth structure using natural sources, and controlled-source seismology. The emphasis in each section is on a description of data, the principles behind the analysis techniques, an
Authors
Walter D. Mooney
Thermal and cementation histories of Permian shelf-edge carbonate rocks in the Nanpanjiang Basin, South China
As of 1984, the Nanpanjiang Basin of South China has had almost no exploration by drilling although oil seeps exist among its margins and producing wells occur in adjacent basins. however, cooperative studies by petroleum geologists and geochemists of the United States and the People's Republic of China (1982-1984) show that calcite-cemented reef and fore-reef carbonate rocks near Ziyun contain b
Authors
Robert B. Halley, Judith T. Parrish, Xie Zahn, Hu Wenhai, Peter A. Scholle, Su Zhongrui, Zhang Yirong, Huang Yunming, Li Guangxuan
Erosion and deterioration of the Isles Dernieres Barrier Island Arc, Louisiana, U.S.A.: 1853 to 1988
Using cartographic and aerial photography data from the years 1853, 1890, 1934, 1956, 1978, 1984, and 1988, shoreline change maps of the Isles Dernieres barrier island arc were constructed. These data were accurately superimposed, using a computer mapping system, which removed projection, datum, scale, and other cartographic inconsistencies. Linear, areal, and perimeter measurements indicate that
Authors
Randolph A. McBride, Shea Penland, Bruce E. Jaffe, S. Jeffress Williams, Asbury H. Sallenger, Karen A. Westphal
Earthquakes: Putting good ideas to work
No abstract available.
A mechanical model for lava domes that includes a mechanism for eruptive growth
No abstract available.
Authors
Richard M. Iverson, Roger P. Denlinger
Dynamic pore-pressure fluctuations in rapidly shearing granular materials
Results from two types of experiments show that intergranular pore pressures fluctuated dynamically during rapid, steady shear deformation of water-saturated granular materials. During some fluctuations, the pore water locally supported all normal and shear stresses, while grain-contact stresses transiently fell to zero. Fluctuations also propagated outward from the shear zone; this process modifi
Authors
Richard M. Iverson, Richard G. Lahusen
Earthquakes & Volcanoes, Volume 21, Number 1, 1989: Featuring the U.S. Geological Survey's National Earthquake Information Center in Golden, Colorado, USA
Earthquakes and Volcanoes is published bimonthly by the U.S. Geological Survey to provide current information on earthquakes and seismology, volcanoes, and related natural hazards of interest to both generalized and specialized readers. The Secretary of the Interior has determined that the publication of this periodical is necessary in the transaction of the public business required by law of this
Authors
Henry Spall, Diane C. Schnabel
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska
No abstract available.
Authors
John B. Townshend, R. V. O'Connell, Carol Ann Varner