Publications
Filter Total Items: 3146
Compositional evolution of the zoned calcalkaline magma chamber of Mount Mazama, Crater Lake, Oregon Compositional evolution of the zoned calcalkaline magma chamber of Mount Mazama, Crater Lake, Oregon
The climactic eruption of Mount Mazama has long been recognized as a classic example of rapid eruption of a substantial fraction of a zoned magma body. Increased knowledge of eruptive history and new chemical analyses of ∼350 wholerock and glass samples of the climactic ejecta, preclimactic rhyodacite flows and their inclusions, postcaldera lavas, and lavas of nearby monogenetic vents...
Authors
C. R. Bacon, T. H. Druitt
Historical unrest at large calderas of the world Historical unrest at large calderas of the world
No abstract available.
Authors
Christopher G. Newhall, Daniel Dzurisin
Diskette version of analytical results, and sample locality map for rock samples from the Iditarod quadrangle, Alaska Diskette version of analytical results, and sample locality map for rock samples from the Iditarod quadrangle, Alaska
No abstract available.
Authors
Robert G. McGimsey, Marti L. Miller, B. F. Arbogast
The significance of observations at active volcanoes; A review and annotated bibliography of studies at Kilauea and Mount St. Helens The significance of observations at active volcanoes; A review and annotated bibliography of studies at Kilauea and Mount St. Helens
Study of active volcanoes yields information of much broader significance than to only the discipline of volcanology. Some applications are 1) interpretation of lava-flow structures, stratigraphic complexities, and petrologic relations in older volcanic units; 2) interpretation of bulk properties of the mantle and constraints on partial melting and deep magma transport; 3) interpretation...
Authors
Thomas L. Wright, Don Swanson
Geomorphic and hydrologic dynamics of zero-order basins Geomorphic and hydrologic dynamics of zero-order basins
The 1987 International Symposium on Erosion and Sedimentation in the Pacific Rim, held August 3–7, 1987, in Corvallis, Oreg., included a special session on the geomorphic and hydrologic dynamics of zero-order drainage basins. “Zero-order basin” is one of several terms used to describe unchanneled swales or hollows that may occupy considerable areas of higher-order drainage basins. These...
Authors
Richard M. Iverson
Hawaii Volcano Observatory 75th anniversary Hawaii Volcano Observatory 75th anniversary
The 75th anniversary of the founding of the U.S. Geological Survey (USGS) Hawaiian Volcano Observatory (HVO) was celebrated during January 1987. The festivities began on January 9 with the opening in Hilo of a major exhibit at the Wailoa Center on the current work of HVO, its history, and its special relationship to Hawaii Volcanoes National Park. In addition to spectacular photographs...
Authors
Thomas L. Wright, R. Decker
Book review of The Stability of Slopes, by E.N. Bromhead, Chapman and Hall, New York, 373. p. Book review of The Stability of Slopes, by E.N. Bromhead, Chapman and Hall, New York, 373. p.
No abstract available.
Authors
Richard M. Iverson
Eocene siliceous and calcareous phytoplankton, Deep Sea Drilling Project Leg 95 Eocene siliceous and calcareous phytoplankton, Deep Sea Drilling Project Leg 95
Eocene siliceous and calcareous phytoplankton, with emphasis on silicoflagellates, were studied in 62 samples from DSDP Sites 612 and 613 on the continental slope and rise off New Jersey. The mid-latitude assemblages correlate well with assemblages from California, Peru, and offshore of southern Brazil, but are distinctly different from high-latitude cold-water assemblages of the...
Authors
David Bukry
North Atlantic Quaternary silicoflagellates, Deep Sea Drilling Project Leg 94 North Atlantic Quaternary silicoflagellates, Deep Sea Drilling Project Leg 94
Quaternary silicoflagellates from Deep Sea Drilling Project (DSDP) Mid-Atlantic Leg 94 are generally sparse and dissolution-thinned. Mesocena quadrangula, a low-latitude biostratigraphic guide species, occurs at all four sites studied (606, 607, 609, and 611), allowing identification of low-latitude zones—Dictyocha aculeata Zone, Mesocena quadrangula Zone, and Dictyocha stapedia stapedia...
Authors
David Bukry