The volcanic rocks of the Harney Basin comprise a bimodal
assemblage of rhyolites (SiO₂ greater than 72%) and basalts (SiO₂
less than 52%). Tholeiitic basalts account for 15 rocks analyzed and
alkalic basalts for three. Most basalts contain phenocrysts of olivine
and plagioclase. Pyroxene phenocrysts were not found. Rhyolite
flows...
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, Oregon
AN ABSTRACT OF THE THESIS OF
DONALD JAMES PARKER for the DOCTOR OF PHILOSOPHY
(Name) (Degree
Oregon’s High Lava Plains Province (HLP) has strongly bimodal basalt and rhyolitic volcanism. The Province caps the northern margin of the Basin and Range Province and serves as a transitional region between westward extension of the Basin and Range Province and unextended crust to the north . The High Lava...
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submitted to
Oregon State University
in partial fulfillment of
the requirements for the
degree
Twelve earthquakes off the Oregon and Northern California
coasts were used in this research to study whether faulting associated
with these quakes was of the San Andreas type as observed in
California. The first motions of the incident P and S waves recorded
at various seismic stations in the Pacific...
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-south in western Oregon, Washington, and
Northern California. The S wave is observed to travel with a
Natural disasters including hurricanes, floods, earthquakes, tornadoes, and fires often involve substantial physical and mental impacts on affected populations and thus are public health priorities. Limited research shows that vulnerable populations such as the low-income, socially isolated migrant and seasonal farmworkers (MSFW) are particularly susceptible to the effects of natural...
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, Northridge, CA 91330, USA
2
College of Public Health and Human Sciences, Oregon State University
The Pleistocene Carpinteria basin is an east-trending
northward-verging, faulted syncline containing up to
1220m of partially intertonguing Santa Barbara and
Casitas Formations deposited on previously folded pre-
Pleistocene strata with up to 80° discordance. Structures
subcropping against the unconformity indicate most
of the deformation in the Santa Ynez Range prior...
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submitted to
Oregon State University
in partial fulfillment of
the requirements for the
degree of
Master
Subduction zone earthquake and tsunami hazards affect tens of millions worldwide and the recurrence of these disasters can be evaluated with paleoseismic techniques, because earthquake cycles (and their supercycles) typically span many millennia. In these three chapters, I discuss a suite of analyses I use to evaluate the sedimentary record...
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. Pa on
A DISSERTATION
submi ed to
Oregon State University
in par al fulfi llment of
the
Jurassic rocks exposed in the Buckskin Range of the Yerington district,
represent the upper 1 to 2 km of a large magmatic-hydrothermal system with
porphyry copper deposits at 1-4 km depth. These rocks include, from deep to
shallow, the Yerington batholith, the Artesia Lake Volcanics (intruded by the
batholith), and...
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Porphyry Copper Environment
by
Joanna L. Lipske
A THESIS
submitted to
Oregon State University
in