Index Catalog // ScholarsArchive@OSU

The petrography, structure, and stratigraphy of Powell Buttes, Crook County, central Oregon

Creator:: Weidenheim, Jan Peter
Resource Type:: Masters Thesis

Castle Rocks : a late miocene eruptive center at the north end of Green Ridge, Jefferson County, Oregon

Creator:: Wendland, David W.
Abstract:: Castle Rocks is 12 miles east of Mt. Jefferson, in the central Cascades of Oregon. The area contains volcanic rocks ranging from mid-Miocene to Holocene in age. These rocks record alternating periods of tholeiitic and calc-alkaline volcanism. The oldest rocks in the area range from basaltic andesite lava flows to...
Resource Type:: Masters Thesis

Geology and geochemistry of the Little Walker Volcanic Center, Mono County, California

Creator:: Priest, George R.
Abstract:: Detailed mapping and geochemical analysis of Oligocene to early Pliocene volcanic rocks in the Little Walker volcanic center, Mono County, California have revealed a complex eruptive history. After eruption of widespread rhyolitic ash flows of the Valley Springs Formation in the Oligocene, Miocene to early Pliocene volcanism of the western...
Resource Type:: Dissertation

Alkaline and peraluminous intrusives in the Clarno Formation around Mitchell, Oregon : ramifications on magma genesis and subduction tectonics

Creator:: Appel, Michael
Abstract:: The Clarno Formation is a series of volcanic, volcaniclastic, and related intrusive rocks located in central Oregon. It is the westernmost extent of a broader Eocene magmatic belt that covers much the western United States. The magmatic belt stretches eastward from Oregon to western South Dakota, and from the Canadian...
Resource Type:: Masters Thesis

The volcanic stratigraphy of the Mickey Hot Springs area, Harney County, Oregon

Creator:: Hook, Richard
Abstract:: Steens Mountain is a major horst block near the northern terminus of the Basin and Range geomorphic province of southeastern Oregon. A section of Miocene volcanic rocks totaling 5000 feet in thickness are exposed in a fault escarpment on the eastern side of Steens Nountain. These include: the Pike Creek...
Resource Type:: Masters Thesis

Geology of a portion of the Painted Hills Quadrangle, Wheeler County, north-central Oregon

Creator:: Huggins, Jonathan Wayne
Resource Type:: Masters Thesis

Petrochemical evolution of High Cascade volcanic rocks in the Three Sisters region, Oregon

Creator:: Hughes, Scott Stevens
Resource Type:: Dissertation

Geology of the Sand Mountain area, Western Wheeler County, Oregon

Creator:: Barnes, Thomas John
Resource Type:: Masters Thesis

Stratigraphy of the neogene volcanic rocks along the lower Metolius River, Jefferson County, central Oregon

Creator:: Dill, Thomas E.
Resource Type:: Masters Thesis

Geology of the northwest one-quarter of the Prineville Quadrangle, central Oregon

Creator:: Thormahlen, David J.
Abstract:: The northwest one-quarter of the Prineville Quadrangle is underlain by Tertiary and Quaternary volcanic and volcaniclastic rocks of the Columbia River Basalt Group, and the Clarno, John Day, Rattlesnake and Deschutes Formations. The Clarno Formation is dominated by pyroxene-bearing andesites, but also contains olivine-bearing basalts, oxyhornblende-bearing dacite and rhyodacite flows...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The petrography, structure, and stratigraphy of Powell Buttes, Crook County, central Oregon

Castle Rocks : a late miocene eruptive center at the north end of Green Ridge, Jefferson County, Oregon

Geology and geochemistry of the Little Walker Volcanic Center, Mono County, California

Alkaline and peraluminous intrusives in the Clarno Formation around Mitchell, Oregon : ramifications on magma genesis and subduction tectonics

The volcanic stratigraphy of the Mickey Hot Springs area, Harney County, Oregon

Geology of a portion of the Painted Hills Quadrangle, Wheeler County, north-central Oregon

Petrochemical evolution of High Cascade volcanic rocks in the Three Sisters region, Oregon

Geology of the Sand Mountain area, Western Wheeler County, Oregon

Stratigraphy of the neogene volcanic rocks along the lower Metolius River, Jefferson County, central Oregon

Geology of the northwest one-quarter of the Prineville Quadrangle, central Oregon

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