Publications
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Abstracts of the Annual planetary geologic mappers meeting; June 22-24, 2000, Flagstaff, Arizona Abstracts of the Annual planetary geologic mappers meeting; June 22-24, 2000, Flagstaff, Arizona
No abstract available.
Authors
Kenneth L. Tanaka, Derrick D. Hirsch
Landslides induced by Hurricane Mitch in El Salvador -- an inventory and descriptions of selected features Landslides induced by Hurricane Mitch in El Salvador -- an inventory and descriptions of selected features
No abstract available.
Authors
Anthony J. Crone, Rex L. Baum, David J. Lidke, Damon Sather, Lee-Ann Bradley, Arthur C. Tarr
Mountain Meadows Dacite: Oligocene intrusive complex that welds together the Los Angeles Basin, northwestern Peninsular Ranges, and central Transverse Ranges, California Mountain Meadows Dacite: Oligocene intrusive complex that welds together the Los Angeles Basin, northwestern Peninsular Ranges, and central Transverse Ranges, California
Dikes and irregular intrusive bodies of distinctive Oligocene biotite dacite and serially related hornblende latite and felsite occur widely in the central and eastern San Gabriel Mountains, southern California, and are related to the Telegraph Peak granodiorite pluton. Identical dacite is locally present beneath Middle Miocene Topanga Group Glendora Volcanics at the northeastern edge of...
Authors
Thane H. McCulloh, Larry A. Beyer, Ronald W. Morin
A preliminary finite-element analysis of a shallow landslide in the Alki area of Seattle, Washington A preliminary finite-element analysis of a shallow landslide in the Alki area of Seattle, Washington
No abstract available.
Authors
S. Debray, W. Z. Savage
Density and velocity relationships for digital sonic and density logs from coastal Washington and laboratory measurements of Olympic Peninsula mafic rocks and greywackes Density and velocity relationships for digital sonic and density logs from coastal Washington and laboratory measurements of Olympic Peninsula mafic rocks and greywackes
Three-dimensional velocity models for the basins along the coast of Washington and in Puget Lowland provide a means for better understanding the lateral variations in strong ground motions recorded there. We have compiled 16 sonic and 18 density logs from 22 oil test wells to help us determine the geometry and physical properties of the Cenozoic basins along coastal Washington. The depth...
Authors
Thomas M. Brocher, Nikolas I. Christensen
Monterey Bay marine sanctuary geological processes and framework Monterey Bay marine sanctuary geological processes and framework
No abstract available.
Authors
Michael E. Field
Antarctic ice streams and outflow channels on Mars Antarctic ice streams and outflow channels on Mars
New sonar images of the Antarctic sea floor reveal mega-scale glacial lineations that are strikingly similar to longitudinal flutes in martian outflow channels. The analogs suggest that ice moved through the martian channels in places and carved the flutes. The ice in martian channels may have moved like Antarctic ice streams on deformable debris saturated with water under high pore...
Authors
Baerbel K. Lucchitta
U.S. Geological Survey Karst Interest Group: proceedings, St Petersburg, Florida February 13-16, 2001 U.S. Geological Survey Karst Interest Group: proceedings, St Petersburg, Florida February 13-16, 2001
Karst and similar landscapes are found in a wide range of biogeographic classes. In the U.S. for example, Everglades, Mammoth Cave, and Hawaii Volcanoes National Parks have little in common - except karst or pseudokarst, and a cultural past (even though these are very different). This diversity of geologic settings makes karst difficult to categorize and work with when designing a...
Authors
Eve L. Kuniansky
TES premapping data: Slab ice and snow flurries in the Martian north polar night TES premapping data: Slab ice and snow flurries in the Martian north polar night
In the 1970s, Mariner and Viking spacecraft observations of the north polar region of Mars revealed polar brightness temperatures that were significantly below the expected kinetic temperatures for CO2 sublimation. For the past few decades, the scientific community has speculated as to the nature of these Martian polar cold spots. Thermal Emission Spectrometer (TES) thermal spectral data...
Authors
Timothy N. Titus, Hugh H. Kieffer, Kevin F. Mullins, Phillip R. Christensen
Wildfire-related debris-flow initiation processes, Storm King Mountain, Colorado Wildfire-related debris-flow initiation processes, Storm King Mountain, Colorado
A torrential rainstorm on September 1, 1994 at the recently burned hillslopes of Storm King Mountain, CO, resulted in the generation of debris flows from every burned drainage basin. Maps (1:5000 scale) of bedrock and surficial materials and of the debris-flow paths, coupled with a 10-m Digital Elevation Model (DEM) of topography, are used to evaluate the processes that generated fire...
Authors
S.H. Cannon, R. M. Kirkham, M. Parise
TES mapping of Mars' north seasonal cap TES mapping of Mars' north seasonal cap
The Mars Global Surveyor thermal emission spectrometer has made observations of Mars' north polar region for nearly a full martian year. Measurements of bolometric emission and reflectance, as well as brightness temperatures in specific bands synthesized from thermal radiance spectra, are used to track the behavior of surface and atmospheric temperatures, the distribution of condensed...
Authors
Hugh H. Kieffer, Timothy N. Titus