Index Catalog // ScholarsArchive@OSU

Flood history and sedimentation at the mouth of Redwood Creek, Humboldt County, California

Creator:: Ricks, Cynthia L.
Abstract:: Since the early 1950's, the distribution of sediment at the mouth of Redwood Creek has been altered by the effects of channel aggradation and channelization along the lower reach. Severe flooding in 1953, 1955, and 1964 caused bank erosion, landsliding, and channel geometry changes along Redwood Creek. The increased sediment...
Resource Type:: Masters Thesis

Alteration and vein mineralization, Schwartzwalder uranium deposit, Front Range, Colorado

Creator:: Wallace, Alan R.
Abstract:: The Schwartzwalder uranium deposit, in the Front Range west of Denver, Colorado, is the largest vein-type uranium deposit in the United States. The deposit is situated in a steeply dipping fault system that cuts Proterozoic metamorphic rocks. The host rocks represent a submarine volcanic system with associated chert and iron-...
Resource Type:: Dissertation
Full Text:: alteration assemblage. Early vein mineralization produced a minor sulfide-adularia-carbonate assemblage

Insights into the Geochemical Evolution of the Youngest Toba Tuff (Sumatra, Indonesia) Magma Chamber Through the Lens of Zircon-hosted Melt Inclusions

Creator:: Lerner, Allan
Abstract:: Supervolcanic eruptions are among the most catastrophic phenomena on Earth, erupting 100s-1000s of cubic kilometers of magma, and producing devastating local effects and global climate perturbations. The largest supervolcanic eruption of the last 28 Ma was the 74 ka Youngest Toba Tuff (YTT) eruption from Sumatra, Indonesia, which erupted 2,800...
Resource Type:: Masters Thesis
Full Text:: sanidine), but these effects are also minor relative to melt inclusions in many major-phase minerals. The

Evolution and inheritance of Cascadia sub-arc mantle reservoirs

Creator:: Bromley, Sarah Ashley
Abstract:: Inheritance from pre-existing mantle domains and fluid and melt contributions from active subduction together produce the geochemical signatures of mantle-derived arc basalts. In this context, this work evaluates the evolution of Cascadia mantle sources by documenting the isotopic and compositional characteristics of primitive basalts along a transect across the Eocene-Oligocene...
Resource Type:: Masters Thesis
Full Text:: minor influence on the Western Cascade arc magmas. As with the Siletzia mantle domain in EOPC arc

Petrogenesis of the Steens Basalt : Variation in Source Contributions and Effects of Crustal Passage During the Onset of Columbia River Flood Basalt Volcanism

Creator:: Moore, Nicole E.
Abstract:: Continental flood basalts represent short-lived but immense blasts of mafic magma to the continental crust. The youngest and smallest continental flood basalt worldwide, the Columbia River Basalt, initiated with the eruption of the most mafic member, the Steens Basalt (~16.9 Ma). The Steens Basalt is exposed in southeast Oregon, southwest...
Resource Type:: Dataset and Dissertation
Full Text:: the mid to upper crust and are generated by increasingly voluminous recharge events with minor

Assessing the Potential for a Late Pleistocene-Early Holocene Occupation at the Tahkenitch Landing Site (35DO130), Siuslaw National Forest, Oregon Dunes National Recreation Area

Creator:: Kirkpatrick, Molly C.
Abstract:: The archaeological record of the First Americans is known almost exclusively from interior sites located away from coastal margins. While archaeologists hypothesize that early peoples initially migrated into the Americas along the Pacific coast, environmental changes associated with postglacial sea level rise may have destroyed or obscured such early sites....
Resource Type:: Masters Thesis
Full Text:: people. Finally, I want to thank my partner Rick who has been by my side throughout graduate school

The geology of the Salem quadrangle, Oregon

Creator:: Mundorff, Maurice John, 1910-2002.
Resource Type:: Masters Thesis
Full Text:: minor variations in diverse directions. The Oligocene beds are the youngest marine beds in the area

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:: Kirkeby, Rick Haslem, Rich Hasler, Bob and Linda Ream, and Chris Wells for making my stay in Ely/Ruth

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:: major (50-100%) and minor (10-20%) Cenozoic extension respectively (Stewart, 1998). The NWBR is

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:: , ... and love, Sharon, Mike, Pat, Rick, Ray and Joe who were always there when I needed them, Eunice

ScholarsArchive@OSU

Flood history and sedimentation at the mouth of Redwood Creek, Humboldt County, California

Alteration and vein mineralization, Schwartzwalder uranium deposit, Front Range, Colorado

Insights into the Geochemical Evolution of the Youngest Toba Tuff (Sumatra, Indonesia) Magma Chamber Through the Lens of Zircon-hosted Melt Inclusions

Evolution and inheritance of Cascadia sub-arc mantle reservoirs

Petrogenesis of the Steens Basalt : Variation in Source Contributions and Effects of Crustal Passage During the Onset of Columbia River Flood Basalt Volcanism

Assessing the Potential for a Late Pleistocene-Early Holocene Occupation at the Tahkenitch Landing Site (35DO130), Siuslaw National Forest, Oregon Dunes National Recreation Area

The geology of the Salem quadrangle, 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

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

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