Index Catalog // ScholarsArchive@OSU

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

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

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

Two-stage opening of the northwestern basin and range in eastern Oregon : evidence from the Miocene Crane basin

Creator:: Milliard, Justin B.
Abstract:: New data are presented that provide evidence for the onset of extensional deformation in the Northwestern Basin and Range within 1 million years after the eruption of the Steens Basalt at 16.5 Ma. New geologic mapping (1:24,000), stratigraphic sections, and ⁴⁰Ar/³⁹Ar dating of the Crane Basin rocks provide a control...
Resource Type:: Masters Thesis
Full Text:: history of the basin. Extension‐related horst and graben formation began at 15.5 Ma and continued until

Diffuse deformation patterns along the North American plate boundary zone, offshore western United States

Creator:: Chaytor, Jason D.
Abstract:: Plate boundaries are commonly regions of complex, diffuse deformation with the motion across the boundary accommodated by numerous structural systems, rather than being narrow, discrete zones of deformation. One such boundary occurs where the North American plate makes contact with Juan de Fuca, Gorda, and Pacific plates along the west...
Resource Type:: Dissertation
Full Text:: ............................................................... 11 2-3 3.5 kHz echo-sounder sub-bottom profile collected across the north-east extension of

Structural Evolution, Vein Orientation, and Paragenesis of the Botija Porphyry Cu-Mo-(Au) Deposit, Colón, Panamá

Creator:: Sepp, Michael D.
Abstract:: The Botija Cu-Mo-Au porphyry deposit is located in the Cobre Panamá mining district, which contains several deposits with a global measure and indicated and inferred resource of 14.8 MT of Cu. These deposits are associated with the Cerro Petaquilla batholith, which has U/Pb zircon ages of 26-33 Ma (Whattam et...
Resource Type:: Masters Thesis
Full Text:: ), which constrain the exhumation of the deposit during a period of localized extension in Panamá between

Understanding large resurgent calderas and associated magma systems : the Pastos Grandes Caldera Complex, southwest Bolivia

Creator:: Kaiser, Jason Frederick, 1985-
Abstract:: The Pastos Grandes Caldera Complex (PGCC) in southwest Bolivia has produced two large-volume (≥800 km³ DRE) dacite ignimbrites from a nested caldera source over a period of 5.5 Myr. In addition to the large-volume ignimbrites, a small-volume ignimbrite shield and post-climactic lavas define this composite system. Based on detailed field...
Resource Type:: Dissertation
Full Text:: America. Geological Society of America Bulletin, 70, 671. Chmielowski, J., Zandt, G., & Haberland, C

Olivine and plagioclase-hosted melt inclusions and their application to determining parental arc magmas

Creator:: Kohut, Edward John
Abstract:: Three broadly interrelated problems of critical significance to the proper interpretation of melt inclusion (MI) data are addressed in this thesis. The first issue, the petrogenesis of anorthitic plagioclase phenocrysts in MORB lavas, has relevance due to the presence of numerous MI in many high-An feldspars. This problem was addressed...
Resource Type:: Dissertation

Genesis of the El Salvador porphyry copper deposit, Chile and distribution of epithermal alteration at Lassen Peak, California

Creator:: Lee, Robert G. (Robert George)
Abstract:: The El Salvador porphyry copper deposit in the Indio Muerto district of northern Chile has been geologically investigated for more than 60 years and provides one of the best bases for understanding similar environments of ore formation elsewhere in the world. Fourteen new zircon U/Pb isotopic ages obtained via in...
Resource Type:: Dissertation
Full Text:: extension of active volcanism within the Cascades. Modified from Guffanti and Weaver (1988

Volatile mobility of trace metals in volcanic systems

Creator:: Loewen, Matthew W.
Abstract:: Semi-volatile trace metals like Li, Cu, Mo, Sn, In, and Pb have the potential to track mobility of a volatile phase in volcanic systems. In this dissertation four studies are presented that either directly investigate or are motivated by observations of trace metal behavior in volcanic systems. A common tool...
Resource Type:: Dissertation

ScholarsArchive@OSU

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

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

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

Two-stage opening of the northwestern basin and range in eastern Oregon : evidence from the Miocene Crane basin

Diffuse deformation patterns along the North American plate boundary zone, offshore western United States

Structural Evolution, Vein Orientation, and Paragenesis of the Botija Porphyry Cu-Mo-(Au) Deposit, Colón, Panamá

Understanding large resurgent calderas and associated magma systems : the Pastos Grandes Caldera Complex, southwest Bolivia

Olivine and plagioclase-hosted melt inclusions and their application to determining parental arc magmas

Genesis of the El Salvador porphyry copper deposit, Chile and distribution of epithermal alteration at Lassen Peak, California

Volatile mobility of trace metals in volcanic systems

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