Publications
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Effects of geothermal development on deformation in the Long Valley Caldera, eastern California, 1985-1994 Effects of geothermal development on deformation in the Long Valley Caldera, eastern California, 1985-1994
Long Valley caldera in east central California has been the site of crustal unrest in the form of seismicity and ground deformation in response to magmatic inflation since 1980. Uplift of the resurgent dome has totaled ∼0.6 m over the 1975–1992 period. Within this region of uplift, and near the southwestern edge of the resurgent dome, is the Casa Diablo area, which experienced relative...
Authors
M.L. Sorey, C. D. Farrar, G.A. Marshall, J.F. Howie
Debris flow, debris avalanche, and flood hazards at and downstream from Mount Rainier, Washington Debris flow, debris avalanche, and flood hazards at and downstream from Mount Rainier, Washington
Mount Rainier volcano has produced many large debris flows and debris avalanches during the last 10,000 years. These flows have periodically traveled more than 100 kilometers from the volcano to inundate parts of the now-populated Puget Sound Lowland. Meteorological floods also have caused damage, but future effects will be partly mitigated by reservoirs. Mount Rainier presents the most...
Authors
Kevin M. Scott, J.W. Vallance
Rapid deformation of the south flank of Kilauea volcano, Hawaii Rapid deformation of the south flank of Kilauea volcano, Hawaii
The south flank of Kilauea volcano has experienced two large [magnitude (M) 7.2 and M 6.1] earthquakes in the past two decades. Global Positioning System measurements conducted between 1990 and 1993 reveal seaward displacements of Kilauea's central south flank at rates of up to about 10 centimeters per year. In contrast, the northern side of the volcano and the distal ends of the south...
Authors
S. Owen, P. Segall, Jeffrey T. Freymueller, Asta Mikijus, R. Denlinger, T. Arnadottir, M. Sako, R. Burgmann
Uppermost Campanian–Maestrichtian strontium isotopic, biostratigraphic, and sequence stratigraphic framework of the New Jersey Coastal Plain Uppermost Campanian–Maestrichtian strontium isotopic, biostratigraphic, and sequence stratigraphic framework of the New Jersey Coastal Plain
Firm stratigraphic correlations are needed to evaluate the global significance of unconformity bounded units (sequences). We correlate the well-developed uppermost Campanian and Maestrichtian sequences of the New Jersey Coastal Plain to the geomagnetic polarity time scale (GPTS) by integrating Sr-isotopic stratigraphy and biostratigraphy. To do this, we developed a Maestrichtian (ca. 73...
Authors
Peter J. Sugarman, K.G. Miller, David Bukry, Mark D. Feigenson
Intraglacial volcanism in the Wells Gray–Clearwater volcanic field, east-central British Columbia, Canada Intraglacial volcanism in the Wells Gray–Clearwater volcanic field, east-central British Columbia, Canada
Small-volume, subaerial, subaqueous and subglacial basaltic eruptions occurred in the Wells Gray–Clearwater area during Quaternary time. Part of this time, significant thicknesses of glacial ice were present. Dating of intraglacial volcanic features corroborates other evidence of an Early Pleistocene, Cordilleran-wide ice sheet. Of the intraglacial volcanoes investigated, three were...
Authors
C.J. Hickson, James G. Moore, L. Calk, P. Metcalfe
Offshore geology of Mauna Loa and adjacent areas, Hawaii Offshore geology of Mauna Loa and adjacent areas, Hawaii
No abstract available.
Authors
James G. Moore, William W Chadwick
Petrology of Submarine Lavas from Kilauea's Puna Ridge, Hawaii Petrology of Submarine Lavas from Kilauea's Puna Ridge, Hawaii
We have studied 30 quenched tholeiitic lava flows recovered by 20 dredge hauls and one submersible dive along Puna Ridge, the submarine part of the East Rift Zone of Kilauea Volcano, Hawaii Glass grains from numerous additional flows were recovered in turbidite sands cored in the Hawaiian Trough. These quenched lavas document variable primary magma compositions; olivine and multiphase
Authors
D. A. Clague, James G. Moore, J.E. Dixon, W.B. Friesen
Evaluation of viscoplastic slope movement based on triaxial tests Evaluation of viscoplastic slope movement based on triaxial tests
Viscoplastic soil parameters are used in a nonlinear viscoplastic constitutive model to predict time-dependent displacement of slow-moving landslides. The viscoplastic material parameters are determined by a novel method that uses a standard triaxial apparatus. This method employs data obtained from consolidated drained triaxial tests and consolidated drained stress-controlled strain...
Authors
Wylie W. -H. Wong, Carlton L. Ho, Richard M. Iverson, Cynthia Hovind
Topographic maps of Novarupta dome and selected portions of the Valley of Ten Thousand Smokes, Katmai National Park and Preserve, Alaska Topographic maps of Novarupta dome and selected portions of the Valley of Ten Thousand Smokes, Katmai National Park and Preserve, Alaska
No abstract available.
Authors
Robert Strobe, William Rice, C.A. Neal
Living with a volcano in your backyard; volcanic hazards at Mount Rainier Living with a volcano in your backyard; volcanic hazards at Mount Rainier
No abstract available.
Authors
J. S. Walder, C. L. Driedger
History and hazards of Mount Rainier, Washington History and hazards of Mount Rainier, Washington
Mount Rainier is an active volcano that first erupted about half a million years ago. Because of Rainier's great height (14,410 feet above sea level) and northerly location, glaciers have cut deeply into its lavas, making it appear deceptively older than it actually is. Mount Rainier is known to have erupted as recently as in the 1840s, and large eruptions took place as recently as about...
Authors
Thomas W. Sisson
Volcanic-hazard zonation for Glacier Peak Volcano, Washington Volcanic-hazard zonation for Glacier Peak Volcano, Washington
No abstract available.
Authors
R. B. Waitt, Larry Mastin, J. E. Beget