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Geology of the San Diego onshore-offshore area, southern California
AuthorWhite, Craig Kenneth
AdvisorLintz, J., Jr.
Geological Sciences and Engineering
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A complete research of the published literature, Masters and Doctoral Theses, and onshore well data, coupled with bottom samples and seismic information has permitted formulation of a structural and stratigraphic interpretation of the onshore-offshore San Diego region. The overall picture is that of a broad, sedimentary basin containing up to several thousand feet of Cretaceous and Tertiary rocks which thin where they overlie basement highs, and pinch out against uplifted structures to the north, west, and east. The sediments were deposited under marine, shallow marine, lagoonal, and non-marine conditions, and in many places reflect deposition by oscillating seas. Two fault systems complicate the basin structure; one trending nearly east-west, and the other, northwest-southeast. Uplift associated with the faulting has had a profound influence upon deposition. The regional structural ''grain" of the San Diego onshore-offshore area appears to be northwest-southeast. Petroleum possibilities in the offshore area appear to be somewhat greater than those onshore. The increased sediment thickness, the presence of a Miocene section, and a possibly higher organic content of the offshore shales are several reasons for this increased potential.
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onshore-offshore San Diego region
shallow marine conditions
two fault systems
regional structure "grain"
Mackay Science Project