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Crustal structure of the Tehuantepec Ridge and adjacent continental margins of southwestern Mexico and western Guatemala

Creator:: Woodcock, Stephen Frederick
Abstract:: A free-air gravity anomaly map of the area between 10°-17°N and 90°-101°W shows distinctive positive and negative anomalies which parallel the Tehuatepec Ridge. The positive anomaly approximately overlies the topographic expression of the ridge. On the wide continental shelf southeast of the Gulf of Tehuantepec a positive gravity anomaly with...
Resource Type:: Masters Thesis
Full Text:: upper crustal densities are chosen consistent with rock types indicated by surface geology, North of

Structures of the continental margin of Central America from northern Nicaragua to northern Panama

Creator:: Victor, Linda
Abstract:: Gravity and seismic data obtained by the geophysical group at Oregon State University on the R/V YAQUINA during 1969, 1971, and 1973 plus other available data over the area just west of Nicaragua and Costa Rica indicate the tectonic complexity of the region. Gravity measurements show negative free-air anomalies over...
Resource Type:: Masters Thesis
Full Text:: . Geographic and structural province map of Nicaragua and Costa Rica (land geology after McBirney and Williams

Mix design for mechanically compacted concrete pipe

Creator:: Sanders, John Patrick
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE TUSIS OF John Patrick Sanders for the 1iS Degrec in Structural Ehgineering. Date

Magnetic and gravity interpretation of Yaloc-69 data from the Cocos plate area

Creator:: Lu, Richard Shih-Ming
Abstract:: Magnetic, gravity and bathymetry data were collected on an extended cruise of the R/V Yaquina in 1969. The last set of data was obtained from those track lines leaving the Panama Basin. The area covered is mainly the Cocos plate (Molnar and Sykes, 1969). The data is analyzed and compared...
Resource Type:: Masters Thesis
Full Text:: , and continental drift is still undecided. Descriptions of Cocos Plate and Regional Marine Geology Le

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

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:: Master of Science in Geology presented on March 30. 1990. Title: Structure of the Crust Beneath Lake

"Lite Rock" in structural concrete

Creator:: Ritchie, Dwight Dameron
Resource Type:: Masters Thesis
Full Text:: , Portland, Oregon, with trusses of Lite Rock Concrete. "LITE ROCK" IN STRUCTURAL CO CRETE INTRODUCTI

Structure and evolution of the Dhurnal oil field, northern Potwar deformed zone, Pakistan

Creator:: Jaswal, Tariq Majeed
Abstract:: The North Potwar Deformed Zone (NPDZ) is part of the active foreland fold-and- thrust belt of the Salt Range and Potwar Plateau (SR/PP) in northern Pakistan. About 500 km of seismic reflection profiles are integrated with surface geologic and drilling data to examine the structure of the NPDZ, in general,...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Geology presented on March 14, 1990. Title: Structure and Evolution of the Dhurnal

Himalayan deformation and metamorphism of rocks south of the Main Mantle Thrust, Karakar Pass area, southern Swat, Pakistan

Creator:: Palmer-Rosenberg, Paul S.
Abstract:: Rocks south of the Main Mantle Thrust (MMT) in Swat, Pakistan consist predominantly of Precambrian to Paleozoic granitic gneisses and metasedimentary rocks that represent the deformed and metamorphosed northern margin of the Indian subcontinent. In the Karakar Pass area the rocks are divisible into three lithologic units: the Swat granite...
Resource Type:: Masters Thesis

The case for NE-SW extension in northeast Oregon

Creator:: Essman, Jim E.
Abstract:: A zone of diffuse deformation -600 km-wide extending from northern California to Washington has developed resulting from the oblique subduction of the Juan de Fuca plate beneath North America, and the northwestward migration of the Pacific plate. This zone is marked by a change in structural style from transtension in...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Crustal structure of the Tehuantepec Ridge and adjacent continental margins of southwestern Mexico and western Guatemala

Structures of the continental margin of Central America from northern Nicaragua to northern Panama

Mix design for mechanically compacted concrete pipe

Magnetic and gravity interpretation of Yaloc-69 data from the Cocos plate area

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

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

"Lite Rock" in structural concrete

Structure and evolution of the Dhurnal oil field, northern Potwar deformed zone, Pakistan

Himalayan deformation and metamorphism of rocks south of the Main Mantle Thrust, Karakar Pass area, southern Swat, Pakistan

The case for NE-SW extension in northeast Oregon

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