Index Catalog // ScholarsArchive@OSU

Structural geology of the Mount Polley Cu-Au district, south-central British Columbia

Creator:: Wafforn, Stephanie R.
Abstract:: The Mount Polley copper-gold deposit is one of a series of porphyry copper deposits that occur in a belt of accreted Mesozoic age island arc terranes in the Canadian Cordillera. The deposit comprises three breccia-hosted Cu-Au ore zones that are associated with a series of monzodiorite to monzonite intrusions emplaced...
Resource Type:: Masters Thesis
Full Text:: Structural Geology of the Mount Polley Cu-Au District, South

Seismic sequence stratigraphy and tectonic evolution of southern hydrate ridge

Creator:: Chevallier, Johanna
Abstract:: A 3D seismic volume was acquired summer 2000 over the southern end of Hydrate Ridge (FIR), an anomalously shallow ridge 100 km offshore Newport, Oregon. The survey followed a succession of scientific expeditions aimed at studying the gas hydrates present in the shallow subsurface that gave the name to the...
Resource Type:: Masters Thesis
Full Text:: ) 4.3.8 UnitS.IA(0.2mytopresent) 67 5 BIOSTRATIGRAPHY 70 6 STRUCTURAL GEOLOGY 74 6.1 Regional

Structural geology of the Morales Canyon and Taylor Canyon region of the Cuyama basin, southern Coast Ranges, California

Creator:: Calhoun, Jeannette A.
Abstract:: Early structural influences on the Cuyama basin include Oligocene extension followed by early Miocene wrench faulting. Evidence of wrench faulting is obscured by Pleistocene thrust faulting. Detailed surface and subsurface structural analysis was used to separately examine the effects of each structural regime. The northwest-trending, right-lateral Russell fault was the...
Resource Type:: Masters Thesis

Structural geology and dislocation modeling of the East Coyote anticline, eastern Los Angles basin

Creator:: Myers, Daniel J.
Abstract:: The 1994 Northridge and 1987 Whittier Narrows earthquakes warned Los Angeles residents of the threat of earthquakes due to unmapped, blind reverse faults and emphasized the importance of identifying and characterizing blind reverse faults in assessing the seismic hazard to the region. The East and West Coyote Hills in the...
Resource Type:: Masters Thesis

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:: Possible modes of crustal rifting that may explain observations of structural geology and lithologies

I. Direction of maximum horizontal compression in western Oregon determined by borehole breakouts. II. Structure and tectonics of the northern Willamette Valley, Oregon

Creator:: Werner, Kenneth Stefan
Abstract:: Elliptical borehole enlargements or "breakouts" caused by systematic spalling of a borehole wall due to regional maximum horizontal stresses were identified in 18 wells drilled in the Coast Range and Willamette Valley of western Oregon. The breakouts generally indicate a NNW to NNE orientation of maximum horizontal compression (oH[subscript max])...
Resource Type:: Masters Thesis

Basaltic volcanism and tectonics of the High Lava Plains, southeastern Oregon

Creator:: Jordan, Brennan T.
Abstract:: The High Lava Plains province (HLP) of southeastern Oregon is a Miocene to Recent volcanic upland characterized by widespread basaltic volcanism and west-migrating rhyolitic volcanism. New ⁴⁰Ar/³⁹Ar ages for HLP rhyolites demonstrate that the trend of migrating rhyolitic volcanism is robust, reflecting westward migration at a rate of -35 km/m.y....
Resource Type:: Dissertation
Full Text:: of the High Lava Plains ....................................................... 6 Structural Geology

Seismotectonics in the eastern Precordillera, San Juan, Argentina : reconciling earthquakes and structural geology in the vicinity of the 1944 earthquake for a new model of crustal-scale deformation

Creator:: Schiffman, Celia Rose
Abstract:: This thesis synthesizes surficial structural data, a detailed analysis of an earthquake in 1944, and historical seismicity into a new model of crustal scale deformation in the eastern Precordillera in northwestern Argentina in the vicinity of San Juan. The eastern Precordillera was uplifted during previous thin-skinned deformation episodes, and is...
Resource Type:: Masters Thesis
Full Text:: eastern Precordillera, San Juan, Argentina: Reconciling earthquakes and structural geology in the

Paleoenvironmental reconstruction of an active margin coast from the Pleistocene to the present : examples from southwestern Oregon

Creator:: Punke, Michele Leigh
Abstract:: This study illustrates geoarchaeological and paleoenvironmental approaches to the investigation of an active margin coastal setting and provides examples of how information gleaned through examination of the stratigraphic record can reveal depositional signatures that provide insights into the geomorphic and tectonic forces active within coastal river basins. Three case studies...
Resource Type:: Dissertation

Late Pleistocene Slip Rate along the Panamint Valley Fault System, Eastern California

Creator:: Choi, Na Hyung
Abstract:: The Eastern California Shear Zone (ECSZ) is a broad zone of dextral shear inboard of the North American - Pacific plate boundary. Despite decades of study, the significance of a mismatch between geodetic velocities and geologic fault slip rates across the ECSZ remains incompletely understood. Geodetically determined interseismic strain across...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Na Hyung Choi for the degree of Master of Science in Geology

ScholarsArchive@OSU

Structural geology of the Mount Polley Cu-Au district, south-central British Columbia

Seismic sequence stratigraphy and tectonic evolution of southern hydrate ridge

Structural geology of the Morales Canyon and Taylor Canyon region of the Cuyama basin, southern Coast Ranges, California

Structural geology and dislocation modeling of the East Coyote anticline, eastern Los Angles basin

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

I. Direction of maximum horizontal compression in western Oregon determined by borehole breakouts. II. Structure and tectonics of the northern Willamette Valley, Oregon

Basaltic volcanism and tectonics of the High Lava Plains, southeastern Oregon

Seismotectonics in the eastern Precordillera, San Juan, Argentina : reconciling earthquakes and structural geology in the vicinity of the 1944 earthquake for a new model of crustal-scale deformation

Paleoenvironmental reconstruction of an active margin coast from the Pleistocene to the present : examples from southwestern Oregon

Late Pleistocene Slip Rate along the Panamint Valley Fault System, Eastern California

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