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Filtering by: Creator McManus, James Subject Submarine geology

Marine geology of the continental margin off southern Oregon

Creator:

Spigai, Joseph John

Abstract:

The continental margin off southern Oregon, which includes the shelf and slope from Cape Blanco to the Oregon-California border, exhibits a distinctive marginal-plateau structural pattern which divides the margin into the continental shelf, the upper continental slope and its associated benches, and the lower continental slope. Lutum transport and deposition...

Resource Type:

Dissertation

Full Text:

Gary B. Griggs, and to David M. Chambers, Roger H. Neudeck, Robert E. Peterson, James B. Phipps
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
Tectonic evolution of the Walvis Ridge and West African margin, South Atlantic Ocean

Creator:

Baumgartner, Timothy Robert

Abstract:

The opening of the South Atlantic between 140 and 90 m. y. B. P. occurred about two poles of rotation. The initial pole of rotation was maintained until Africa and South America were completely separated. The subsequent removal of restraints imposed by the pre-existing structure of Africa and South America...

Resource Type:

Masters Thesis
Marine geology of Astoria submarine canyon

Creator:

Carlson, Paul R. (Paul Roland), 1933-

Resource Type:

Dissertation