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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 42 (1958)

Issue: 1. (January)

First Page: 218

Last Page: 218

Title: Cascade Oil Field, Los Angeles County, California: ABSTRACT

Author(s): George H. Roth, Harold H. Sullwold, Jr.

Article Type: Meeting abstract


The Cascade oil field is a typical new California oil field--highly complex geologically and economically insignificant to date, but with a glorious future.

The field, discovered in 1954, lies in the Santa Susana Mountains and is the most southeastern field in the Ventura basin. Production is from fluviatile and near-shore marine conglomerate and sandstone of the Sunshine Ranch member of probable latest Pliocene age. The oil is trapped in a plunging anticline with updip closure provided by a large cross-fault. The entire pool lies beneath the Santa Susana thrust fault which is here expressed as two branches separated by 1,000 feet of strata whose structure and stratigraphic relationships are obscure.

Six wells are producing a total of 360 B/D of 17°-24° gravity oil from 200-600 feet of oil sand at total depths of about 2,900 feet. Only thirty-five acres are proved to date. However, the limits have not been established and the deeper possibilities have not been fully investigated.

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