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Geochronology and geochemistry of low temperature hydrothermal alteration in oceanic crust : an investigation of celadonite in the Troodos ophiolite, Cyprus

Creator:: Gallahan, William E.
Resource Type:: Dissertation
Full Text:: the Troodos Ophiolite. Cyprus. Abstract approved; Robert A. Duncan Celadonite, a low-temperature

Analysis of semi-volatile trace metals in basaltic glass by LA-ICP-MS

Creator:: Loewen, Matthew W.
Abstract:: Semi-volatile trace metals (e.g., Cd, Sn, Pb, Zn, Cu, Mo) have been analyzed by using laser ablation ICP-MS in a number of silicate glasses (GSE-1G, GSD-1G, NIST 610, NIST 612, BCR-2G, BHVO-2G). Our work investigates and highlights sources of uncertainty in the analysis of semi-volatile metals using LA-ICP-MS. We identify...
Resource Type:: Masters Thesis
Full Text:: to thank my thesis committee members John Dilles and Robert Duncan for valuable conversation and

Reactive transport modeling in a discrete fracture : applications to the formation of sericitic hydrothermal alteration at Butte, Montana

Creator:: Geiger, Sebastian
Abstract:: A model for the spatial and temporal evolution of the gray sericitic (GS) and sericite with remnant biotite (SBr) hydrothermal alteration selvages within the Butte Quartz Monzonite (BQM) of the porphyry copper deposit at Butte, Montana, is presented. The model provides a mathematical description for the location and advance of...
Resource Type:: Masters Thesis
Full Text:: Robert Duncan. Roy, John, and Mark are not only great geologists who came up with this very exciting

Volcanology and petrology of the Rattlesnake Ash-Flow Tuff, eastern Oregon

Creator:: Streck, Martin J.
Abstract:: The Rattlesnake Ash-Flow Tuff erupted 7.05±0.01 Ma from the western Harney Basin, southeastern Oregon. The location of the vent area is inferred based on vent-ward increases in size of pumices, in degree of welding, and in degree of post-emplacement crystallization. Today's outcrops cover 9000 km2 and estimated original outcrop coverage...
Resource Type:: Dissertation
Full Text:: lot thinner! The time and efforts of my graduate committee, Gordon Goles, Ed Taylor, Bob Duncan

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
Full Text:: appreciation for Adam Kent, my advisor, and the members of my thesis committee: Bob Duncan, John Dilles

Structure of the crust beneath Lake Superior from forward modeling of large aperture seismic data

Creator:: Shay, John T.
Abstract:: Both travel times and amplitudes of large offset refracted and reflected arrivals observed during GLIMPCE (Great Lakes International Multidisciplinary Program on Crustal Evolution) along line A in Lake Superior have been modeled using two-dimensional ray tracing techniques. Forward modeling was used to iteratively refine an initial velocity model that was...
Resource Type:: Masters Thesis
Full Text:: modeling of large aperture seismic data AN ABSTRACT OF THE THESIS OF John T. Shay for the degree of

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:: graduate committee Anita Grunder, John Dilles, and Yvette Sptiz, your contributions were greatly

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:: the door when many others might have. Secondly, my committee members Anita Grunder and John Dilles

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:: him. Conversations with Matt Coble, Nancye Dawers, John Dilles, Bob Duncan, Jim Faulds, Mark Ford

ScholarsArchive@OSU

Geochronology and geochemistry of low temperature hydrothermal alteration in oceanic crust : an investigation of celadonite in the Troodos ophiolite, Cyprus

Analysis of semi-volatile trace metals in basaltic glass by LA-ICP-MS

Reactive transport modeling in a discrete fracture : applications to the formation of sericitic hydrothermal alteration at Butte, Montana

Volcanology and petrology of the Rattlesnake Ash-Flow Tuff, eastern Oregon

Volatile mobility of trace metals in volcanic systems

Structure of the crust beneath Lake Superior from forward modeling of large aperture seismic data

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

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

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