Index Catalog // ScholarsArchive@OSU

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

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:: range, Surface geology indicates the exposed rocks are primarily Quaternary continental sediments (King

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

Stratigraphy and structure of Dixon Mountain-Little Water Canyon area Beaverhead County, Montana

Creator:: Klecker, Richard Alan
Abstract:: Approximately 23 square miles of the east-central part of the Tendoy Range are included in the thesis area which lies three miles west of Dell, Montana. Rocks ranging in age from Late Mississippian to Recent are exposed in the study area. The upper Paleozoic section includes approximately 4,200 feet (1,281...
Resource Type:: Masters Thesis

Superposed compressional and extensional strain in Lower Paleozic rocks of the northwestern Grant Range, Nevada

Creator:: Camilleri, Phyllis A.
Abstract:: The Grant Range, in east-central Nevada, is a north-east trending range bounded on the west by a west-dipping normal fault system. Rocks within the range record a complex polyphase Mesozoic ductile compressional and Cenozoic brittle extensional deformational history. The northwestern Grant Range exposes deformed, regionally metamorphosed and unmetamorphosed, Cambrian to...
Resource Type:: Masters Thesis

Structural interpretation of the eastern Sulaiman foldbelt and foredeep, Pakistan

Creator:: Humayon, Mansoor
Abstract:: The Sulaiman foldbelt is an active and conspicuous tectonic feature on the northwestern margin of the Indo-Pakistani plate. Seismic reflection data have been combined with surface geological mapping and drillhole data to interpret the structural style and tectonic shortening of the eastern Sulaiman foldbelt and its adjacent foredeep. The data...
Resource Type:: Masters Thesis
Full Text:: Science in Geology presented on March. 13. 1990. Title: Structural Interpretation of the Eastern

The Deschutes Formation-- High Cascade transition in the Whitewater River area, Jefferson County, Oregon

Creator:: Yogodzinski, Gene M.
Abstract:: The Whitewater River area is located directly east of Mt. Jefferson in the Cascades of central Oregon. Approximately 90 mi2 (230 km2) were mapped (scale 1/24,000) and four new K-Ar ages and 151 major element analyses were obtained in a study of the stratigraphic and magmatic transition from the Miocene...
Resource Type:: Masters Thesis

Stratigraphy and structure of part of the Fish Lake Plateau, Sevier County, Utah

Creator:: Alexander, John Byron
Abstract:: Over 3,000 feet of nonmarine Late Cretaceous sedimentary rocks are exposed within the northern Fish Lake Plateau. The Cretaceous strata are overlain by over 2,000 feet of Early Tertiary nonmarine sedimentary rocks and volcanics. Landslide deposits cover over one-half of the area. The Late Cretaceous Blackhawk Formation, the oldest formation...
Resource Type:: Masters Thesis

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

Subsurface geology of the southeastern Cuyama Valley, southern Coast Ranges, California

Creator:: Spitz, Herbert M.
Abstract:: The southeastern Cuyama Valley is located in the southern Coast Ranges, west of Bakersfield, California. Subsurface geologic mapping using data from 62 prospect wells was integrated with surface mapping to determine the depositional and deformational history of this part of the Neogene Cuyama basin. The northwest-trending Russell fault system was...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

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

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

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

Stratigraphy and structure of Dixon Mountain-Little Water Canyon area Beaverhead County, Montana

Superposed compressional and extensional strain in Lower Paleozic rocks of the northwestern Grant Range, Nevada

Structural interpretation of the eastern Sulaiman foldbelt and foredeep, Pakistan

The Deschutes Formation-- High Cascade transition in the Whitewater River area, Jefferson County, Oregon

Stratigraphy and structure of part of the Fish Lake Plateau, Sevier County, Utah

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

Subsurface geology of the southeastern Cuyama Valley, southern Coast Ranges, California

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