Index Catalog // ScholarsArchive@OSU

The Deschutes Formation: evidence of extension-enhanced explosivity in the early High Cascades

Creator:: Pitcher, Bradley W.
Abstract:: The eruptive history of the Quaternary Cascades arc has been relatively well characterized. However, much less is known about the frequency and sizes of explosive eruptions produced by earlier stages of the arc. The Late Neogene Deschutes Formation of Central Oregon preserves a remarkable record of heightened pyroclastic activity during...
Resource Type:: Dissertation
Full Text:: Deschutes Formation: Evidence of Extension-Enhanced Explosivity in the Early High Cascades

Extension and volcanism : tectonic development of the northwestern margin of the Basin and Range Province in southern Oregon

Creator:: Scarberry, Kaleb C.
Abstract:: The northwestern corner of the Basin and Range Province (NWBR) lies in southeast Oregon where extensive Late Miocene, mafic to bimodal basalt-rhyolite volcanism and extensional faults dominate a stark and arid landscape. Near Lake Abert, the Late Miocene volcanic section abuts Early Miocene, dominantly intermediate composition volcanoes at the Coleman...
Resource Type:: Dissertation
Full Text:: formation of NW-striking fault systems. Extension and Volcanism: Tectonic Development of the

Evolution of jasperoid and hydrothermal alteration at Veteran Extension in the Robinson (Ely) porphyry copper district, Nevada

Creator:: Maher, David J., (David Joseph), 1969-
Resource Type:: Masters Thesis
Full Text:: Extension in the Robinson (Ely) porphyry copper district, Nevada AN ABSTRACT OF THE THESIS OF David J

The termination of the Basin and Range Province into a clockwise rotating region of transtension and volcanism, central Oregon

Creator:: Trench, David
Abstract:: Normal faults characterizing extensional provinces may terminate along-strike at regions of zero extension, at zones of transform faults, or at triple junctions. Termination of the Basin and Range extensional province in southeastern Oregon is thought to occur by right-lateral transform motion distributed across the Brothers Fault zone (BFZ) in central...
Resource Type:: Masters Thesis
Full Text:: zero extension, at zones of transform faults, or at triple junctions. Termination of the Basin and

Ar-Ar Age Correlation of the Elkhorn Mountain Volcanics and Base Metal Mineralization in the Ratio Mountain Quadrangle, Montana

Creator:: Horton, Thomas
Abstract:: The Ratio Mountain Quadrangle is located in Southwest Montana, East of the city of Butte. This quadrangle features two major geologic units; the Elkhorn Mountain Volcanics, a series of several ignimbrites of varying composition, and the Boulder Batholith, a large granite pluton that rose through the EMV. Previous studies in...
Resource Type:: Research Paper
Full Text:: Montana: Geology, v. 29, p. 723-726. Protska, H., 1966, Igneous Geology of the Dry Mountain

Structure and seismic hazards of the offshore Cascadia forearc and evolution of the Neogene forearc basin

Creator:: McNeill, Lisa C.
Abstract:: The Cascadia subduction zone has been characterized as a typical Chilean-type subduction zone based on qualitative comparisons of plate age and convergence rate, with simple forearc structure. However, the discovery of unusual structural styles of deformation, variations in the morphology of the forearc, and its absence of seismic activity suggest...
Resource Type:: Dissertation
Full Text:: shelf and upper slope are characterized by extension in the form of listric normal faults. These faults

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
Full Text:: involving extension was in place during the early Cenozoic. In the vicinity of Mitchell, Oregon, the Clarno

Source, evolution, and eruptive history of the Cold Spring Creek volcanics, Beaverhead County, Montana

Creator:: Ivy, Susan Denise
Resource Type:: Masters Thesis
Full Text:: ,,26G, 34M 4A 15A 21H, BV4, 723 805 17C, 17D, B13 20E, 20G 21E PP31 B14, B14A 36C 21G 8C 15E 28F

Structure and evolution of the Dhurnal oil field, northern Potwar deformed zone, Pakistan

Creator:: Jaswal, Tariq Majeed
Abstract:: The North Potwar Deformed Zone (NPDZ) is part of the active foreland fold-and- thrust belt of the Salt Range and Potwar Plateau (SR/PP) in northern Pakistan. About 500 km of seismic reflection profiles are integrated with surface geologic and drilling data to examine the structure of the NPDZ, in general,...
Resource Type:: Masters Thesis
Full Text:: ° 15' nS <723 Fateh Jang 72°45' ::::::) OXY/OGDC/POL/AOCNORTH POTWAR CONCESSION 13 72°50' POL

Interpreting a weird and scenic landscape to park visitors : tectonic and volcanic processes of Craters of the Moon National Monument and Preserve, Idaho

Creator:: Truitt, Kimberly E.
Abstract:: This thesis develops a geology training manual for the Interpretation staff of Craters of the Moon National Monument and Preserve (CRMO) in southern Idaho. The manual will help the staff convey geologic principles to park visitors who are experiencing a landscape formed by volcanic processes. Basic geology and the most...
Resource Type:: Masters Thesis
Full Text:: giving the interpretive staff a clearer picture of the similarity of Basin and Range extension to the

ScholarsArchive@OSU

The Deschutes Formation: evidence of extension-enhanced explosivity in the early High Cascades

Extension and volcanism : tectonic development of the northwestern margin of the Basin and Range Province in southern Oregon

Evolution of jasperoid and hydrothermal alteration at Veteran Extension in the Robinson (Ely) porphyry copper district, Nevada

The termination of the Basin and Range Province into a clockwise rotating region of transtension and volcanism, central Oregon

Ar-Ar Age Correlation of the Elkhorn Mountain Volcanics and Base Metal Mineralization in the Ratio Mountain Quadrangle, Montana

Structure and seismic hazards of the offshore Cascadia forearc and evolution of the Neogene forearc basin

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

Source, evolution, and eruptive history of the Cold Spring Creek volcanics, Beaverhead County, Montana

Structure and evolution of the Dhurnal oil field, northern Potwar deformed zone, Pakistan

Interpreting a weird and scenic landscape to park visitors : tectonic and volcanic processes of Craters of the Moon National Monument and Preserve, Idaho

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