The Petroleum Geology of the Oceanside Trough, Capistrano Basin, Offshore Southern California

by James M. Galloway, Dep of the Interior, Camarillo, United States,
William W. H. Kou, Dep of the Interior, Camarillo, United States,

Document Type: Proceeding Paper

Part of: Coastal Zone '91


The Caoistrano Basin represents one of the last essentially unexplored Neogene depocenters along the southern California coast. Within the greater Capistrano Basin, the Oceanside Trough is a narrow, elongate, upper crustal depression. The stratigraphy of the Oceanside Trough is not known with absolute certainty, due to the lack of well data. However, in excess of 8,000 miles of seismic reflection data have been obtained in the area. Our geologic model of the trough suggests that the subsurface rocks in the area may be analogous to those known in the southwestern block of the nearby Los Angeles Basin. The dominant structural feature in the Capistrano Basin offshore is the southeasterly extension of the Newport- Inglewood fault zone. The geologic Features associated with this fault zone in the Los Angeles Basin contain a number of large oil fields.

Subject Headings: Geology | Basins | Seas and oceans | Petroleum | Non-renewable energy | Seismic tests | Seismic effects | California | United States | Los Angeles

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