Index Catalog // ScholarsArchive@OSU

Surface-subsurface geology of the middle to upper Eocene sedimentary and volcanic rock units, western Columbia County, northwest Oregon

Creator:: Berkman, Thomas Anthony
Abstract:: The middle to upper Eocene Tillamook Volcanics form the basement in the Rock Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and andesites were erupted as shield volcanoes seaward of the strandline ontop of an older deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
Resource Type:: Masters Thesis

The development and application of benthic classifications for coral reef ecosystems below 30 m depth using multibeam bathymetry : Tutuila, American Samoa

Creator:: Lundblad, Emily Ruth
Abstract:: Coral reef ecosystems are the most diverse on earth, and their subsistence is being threatened by natural and adverse anthropogenic patterns and processes. In an effort to understand and protect these marine environments, several programs have outlined strategies and initiatives. For example, the United States Coral Reef Task Force’s Mapping...
Resource Type:: Masters Thesis

Subsurface Quaternary and Pliocene structures of the northern Los Angeles Basin, California

Creator:: Hummon, Cheryl
Abstract:: The northern Los Angeles basin is influenced by two structural styles: the west-trending compressional Transverse Ranges to the north, and the strike-slip Peninsular Ranges to the south. The interaction of these two structural styles has resulted in a complex fold fault belt at the northern margin of the Los Angeles...
Resource Type:: Masters Thesis

Petrology and geochemistry of the Emigrant Pass volcanics, Nevada : implications for a magmatic-hydrothermal origin of the Carlin gold deposits

Creator:: Johnson, Curtis L.
Abstract:: The Emigrant Pass volcanics (EPV) are a 38.3 to 36.4 Ma calc-alkaline volcanic center that erupted andesite and dacite, and a late series of felsic dikes along the south flank of the Carlin gold district in north-central Nevada. The EPV includes dacite and rhyolite porphyry dikes indistinguishable from porphyry dikes...
Resource Type:: Masters Thesis

Depositional and diagenetic model for the Middle Devonian Denay Limestone, northern Antelope Range, Eureka County, Nevada

Creator:: Hoffmann, Heidi
Abstract:: Deposition of the Middle Devonian part of the Denay Limestone and Bay State Dolomite in the northern Antelope Range and Fish Creek Range, respectively, took place on and in front of a carbonate platform with a lime sand shoal at the shelf edge. In the Givetian part of the Denay...
Resource Type:: Masters Thesis

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

Experimental determination of the temperature and compositional dependences of rare earth element, Y, and Sc partitioning between high-Ca clinopyroxene and natural mafic to intermediate silicate melts

Creator:: Gallahan, William E.
Resource Type:: Masters Thesis

Cretaceous tectonic history along the Salmon River suture zone near Orofino, Idaho : Metamorphic structural and ⁴⁰Ar/³⁹Ar thermochronologic constraints

Creator:: Davidson, Gary F.
Resource Type:: Masters Thesis

Precipitation estimation in mountainous terrain using multivariate geostatistics

Creator:: Hevesi, Joseph A.
Abstract:: Estimates of average annual precipitation (AAP) are-needed for hydrologic modeling at Yucca Mtn., Nevada, site of a proposed, high-level nuclear waste repository. Historical precipitation data and station elevation were obtained for stations in southern Nevada and southeastern California. Elevations for 1,531 additional locations were obtained from topographic maps. The sample...
Resource Type:: Masters Thesis

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

ScholarsArchive@OSU

Surface-subsurface geology of the middle to upper Eocene sedimentary and volcanic rock units, western Columbia County, northwest Oregon

The development and application of benthic classifications for coral reef ecosystems below 30 m depth using multibeam bathymetry : Tutuila, American Samoa

Subsurface Quaternary and Pliocene structures of the northern Los Angeles Basin, California

Petrology and geochemistry of the Emigrant Pass volcanics, Nevada : implications for a magmatic-hydrothermal origin of the Carlin gold deposits

Depositional and diagenetic model for the Middle Devonian Denay Limestone, northern Antelope Range, Eureka County, Nevada

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

Experimental determination of the temperature and compositional dependences of rare earth element, Y, and Sc partitioning between high-Ca clinopyroxene and natural mafic to intermediate silicate melts

Cretaceous tectonic history along the Salmon River suture zone near Orofino, Idaho : Metamorphic structural and ⁴⁰Ar/³⁹Ar thermochronologic constraints

Precipitation estimation in mountainous terrain using multivariate geostatistics

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

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