Index Catalog // ScholarsArchive@OSU

Gravity anomalies and their structural implications for the southern Oregon Cascade Mountains and adjoining Basin and Range province

Creator:: Veen, Cynthia A.
Abstract:: Gravity measurements made during 1979 and 1980, combined with existing gravity measurements, provide data for the interpretation of upper crustal structures relevant to the assessment of the geothermal potential of south-central Oregon. West of Upper Klamath Lake, free-air gravity anomalies trend north-south and average near 35 mgals. East of Upper...
Resource Type:: Masters Thesis
Full Text:: a regional gradient of nearly .4 mgals/km, which is attributed to the exIstence of a lOW- density

Long wavelength gravity anomalies and implications concerning a descending lithospheric slab in the Pacific Northwest

Creator:: MacFarlane, William Thomas
Abstract:: The thermal regime of a postulated descending lithospheric slab is calculated. The gravity anomaly associated with such a structure is large in amplitude and long in wavelengh. Observed free-air gravity anomalies in the Pacific Northwest do not indicate a gravitational effect due to a descending slab. Two hypothetical compensation models...
Resource Type:: Dissertation
Full Text:: Department) t7' (Date) Title: LONG WAVELENGTH GRAVITY ANOMALIES AND IMPLICA- TIONS CONCERNING A DESCENDING

A marine geophysical study of Vizcaino Bay and the continental margins of western Mexico between 27 ̊and 30 ̊north latitude

Creator:: Calderon, Gustavo
Resource Type:: Dissertation
Full Text:: degree of Doctor_of_Ppjy in_ Geophysics presented on August 8, 1978 Title: A MARINE GEOPHYSICAL STUDY

Gravity measurements and their structural implications for the continental margin of southern Peru

Creator:: Whitsett, Robert Manning
Abstract:: A free-air gravity anomaly map of the continental margin of Peru between 12° and 18° S. Lat. shows a -110 to -220 mgl anomaly associated with the Peru-Chile Trench, a -60 mgl anomaly over the Pisco Basin on the continental shelf, and -120 mgl anomaly over the Mollendo (or Arequipa)...
Resource Type:: Dissertation
Full Text:: : RichardW. Couch A free-air gravity anomaly map of the continental margin of Peru between 12° and 18° S

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:: approved: Richard W. Couch A free-air gravity anomaly map of the area between 10°-17°N and 90°-101°W

Crustal structure of the northwestern continental margin of the Indian subcontinent from gravity and magnetic data

Creator:: Soofi, Muhammad Asif
Abstract:: The continental margin off the coast of Pakistan between the Murray ridge and the Gulf of Cambay has been studied in this work using gravity, magnetic and bathymetric data. Two dimensional gravity and magnetic models based on free-air gravity and residual magnetic data are developed along a north-south profile off...
Resource Type:: Masters Thesis
Full Text:: are developed along a north- south profile off the coast of Karachi. The purpose was to interpret

Geologic structure of the western continental margin of south central Baja California based on seismic and potential field data

Creator:: Coperude, Shane Patrick
Abstract:: Marine geophysical data from the continental margin of Baja California and the Gulf of California, and geological and geophysical data from the Baja California Peninsula and mainland Mexico, outline the major geologic and tectonic features of the Baja California Peninsula and the surrounding areas from 24.5° N. Lat. to 27.5°...
Resource Type:: Masters Thesis
Full Text:: empirical curve of Ludwig, Nafe, and Drake (1971) provides a means of relating seismic velocity to rock

Crustal structures and tectonism in southeastern Alaska and western British Columbia from seismic refraction, seismic reflection, gravity, magnetic, and microearthquake measurements

Creator:: Johnson, Stephen Hans
Abstract:: Seismic refraction measurements along two unreversed lines indicate that the earth's crust is 26 km thick in southeastern Alaska and 30 km thick along the Inside Passage of British Columbia. The crust in southeastern Alaska, north of Dixon Entrance, consists of a layer 9 km thick with a seismic velocity...
Resource Type:: Dissertation
Full Text:: southeastern Alaska, north of Dixon Entrance, consists of a layer 9 km thick with a seismic velocity of 5.90

Structure of the Panama Basin from marine gravity data

Creator:: Barday, Robert James
Abstract:: In order to quantitatively examine the crustal structure of the Panama Basin without the benefit of local seismic refraction data, the following assumptions were made: (1) No significant lateral changes in density take place below a depth of 50 km. (2) The densities of the crustal layers are those of...
Resource Type:: Masters Thesis
Full Text:: below a depth of 50 km. (2) The densities of the crustal layers are those of a 50-km standard section

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:: mgal and -90 mgal respectively. An outer shell gravity high of +35 mgal occurs between the lows. A

ScholarsArchive@OSU

Gravity anomalies and their structural implications for the southern Oregon Cascade Mountains and adjoining Basin and Range province

Long wavelength gravity anomalies and implications concerning a descending lithospheric slab in the Pacific Northwest

A marine geophysical study of Vizcaino Bay and the continental margins of western Mexico between 27 ̊and 30 ̊north latitude

Gravity measurements and their structural implications for the continental margin of southern Peru

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

Crustal structure of the northwestern continental margin of the Indian subcontinent from gravity and magnetic data

Geologic structure of the western continental margin of south central Baja California based on seismic and potential field data

Crustal structures and tectonism in southeastern Alaska and western British Columbia from seismic refraction, seismic reflection, gravity, magnetic, and microearthquake measurements

Structure of the Panama Basin from marine gravity data

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

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