Index Catalog // ScholarsArchive@OSU

Spectral analysis and ridge-regression of magnetic anomalies from the northern continental margin of the Yucatán Peninsula, Mexico

Creator:: Garcia-Abdeslem, Juan
Abstract:: Marine magnetic data from the northern Yucatan continental margin were used to obtain the radially-averaged power-density spectra (RAPDS) of 34 grids, each with dimensions of 128 by 128 km, overlapping 50 percent. Depths to the tops of three magnetic horizons were estimated from the slopes of linear segments in the...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE ThESIS OF Juan Garcia-Abdeslem for the

High resolution seismic refraction study of the uppermost oceanic crust near the Juan De Fuca Ridge

Creator:: Poujol, Michel
Resource Type:: Masters Thesis
Full Text:: Study of the Uppermost Oceanic Crust near the Juan De Fuca Ridge. Abstract approv :' Randall S

Shallow crustal structure of the caldera of Axial Seamount, Juan de Fuca ridge

Creator:: van Heeswijk, Marijke
Abstract:: An airgun refraction line along the length of the caldera of Axial Seamount as recorded by three Ocean Bottom Seismometers has been analyzed using the tau-zeta inversion technique (Dorman and Jacobson, 1981). Five resulting velocity profiles show that the seismic velocities of the upper 1.4 km of the crust are...
Resource Type:: Masters Thesis
Full Text:: of the Caldera of Axial Seamount, Juan de Fuca Ridge Abstract approved: L. Dale Bibee An airgun

Bulldozer blades and colliding submarine mountain chains : constraints on central Oregon convergent margin tectonics from magnetics and gravity

Creator:: Fleming, Sean W.
Abstract:: Magnetic and gravity modelling was completed along two E-W transects offshore central Oregon. These models indicate that the backstop-forming western edge of the Siletz terrane has a seaward dip of approximately 40° to 49° at 44°48'N, shallowing to ~28° at 44°1 1 'N. This is a well-determined result, given available...
Resource Type:: Masters Thesis
Full Text:: Gravity. Abstract Approved: Anne M. Trehu Magnetic and gravity modelling was completed along two E-W

The Gorda Escarpment's rise and fall : synthesis of exploration seismology, sampling efforts, micropaleontology, and radiometric dating

Creator:: Potter, Susan M.
Abstract:: The Gorda Escarpment (40.4° N and from 126° W to 124.7° W) is a topographic high which is the eastern portion of the Mendocino Transform Fault. The Vizcaino Block is the anomalously shallow portion of the Pacific plate immediately south of the Gorda Escarpment. Sediments of the Vizcaino Block record...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Susan M. Potter for the degree of

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:: Washington is controlled by the subduction of the Juan de Fuca plate beneath the North American plate (Fig

Crustal structure of the Queen Charlotte Transform Fault Zone from multichannel seismic reflection and gravity data

Creator:: Scheidhauer, Maren
Abstract:: The Queen Charlotte Fault system is a segment of the North America - Pacific plate boundary. From 45 Ma - 5 Ma, plate motion has been primarily translational. Since 5 Ma, transpression has been the dominant mode of interaction. The plate boundary west of the Queen Charlotte Islands is characterized...
Resource Type:: Masters Thesis
Full Text:: . Redacted for Privacy Abstract approved: Anne M. Trehu The Queen Charlotte Fault system is a segment of

Shear-wave anisotrophy across the Cascadia Subduction Zone from a linear seismograph array

Creator:: Fabritius, R. Axel
Resource Type:: Masters Thesis
Full Text:: motion of the Juan de Fuca plate and the North American plate at the eastern end of the array

Seismotectonics of the explorer region and of the Blanco Transform Fault Zone

Creator:: Braunmiller, Jochen
Abstract:: In this thesis, we present the first detailed, long-term seismotectonic studies of oceanic ridge-transform systems. The proximity of the Juan de Fuca plate to a network of broadband seismic stations in western North America provides a unique synergy of interesting tectonic targets, high seismicity, and recording capabilities. Our main tools...
Resource Type:: Dissertation
Full Text:: systems. The proximity of the Juan de Fuca plate to a network of broadband seismic stations in western

Plate boundary deformation of the Pacific plate : two case studies

Creator:: Leitner, Beate
Abstract:: Two examples of Pacific rim plate boundary deformation are presented. In the first part of the thesis crustal models are derived for the northwestern part of the Vizcaino block in California using marine seismic and gravity data collected by the Mendocino Triple Junction Seismic Experiment. A northwest-southeast trending kink in...
Resource Type:: Dissertation
Full Text:: mainly north-south compression between the Pacific-Juan de Fuca plates across the Mendocino transform

ScholarsArchive@OSU

Spectral analysis and ridge-regression of magnetic anomalies from the northern continental margin of the Yucatán Peninsula, Mexico

High resolution seismic refraction study of the uppermost oceanic crust near the Juan De Fuca Ridge

Shallow crustal structure of the caldera of Axial Seamount, Juan de Fuca ridge

Bulldozer blades and colliding submarine mountain chains : constraints on central Oregon convergent margin tectonics from magnetics and gravity

The Gorda Escarpment's rise and fall : synthesis of exploration seismology, sampling efforts, micropaleontology, and radiometric dating

Seismic sequence stratigraphy and tectonic evolution of southern hydrate ridge

Crustal structure of the Queen Charlotte Transform Fault Zone from multichannel seismic reflection and gravity data

Shear-wave anisotrophy across the Cascadia Subduction Zone from a linear seismograph array

Seismotectonics of the explorer region and of the Blanco Transform Fault Zone

Plate boundary deformation of the Pacific plate : two case studies

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