Geology of a Portion of the Lompoc Quadrangle of Santa Barbara County, California

Citation

Hookway, Lozell Charles (1930) Geology of a Portion of the Lompoc Quadrangle of Santa Barbara County, California. Master's thesis, California Institute of Technology. doi:10.7907/HG9P-D339. https://resolver.caltech.edu/CaltechTHESIS:01082010-115426058

Abstract

In the southern coastal region of California the Tertiary formations are extensively developed and present many problems of geological interest. The development of their petroleum contents make them of marked economic interest. An area in the Santa Ynez Range was chosen with a view to working out in some detail the structure and stratigraphy of this division of the coast range.

The earliest reports of the geology of the Santa Ynez Range are to be found in the Pacific Railroad Exploration Reports and the Geological Survey of California. Thomas Antisell and Albert H. Campbell described the main topographic features, and noted the presence of asphaltic rocks. The Tertiary age of most of the sedimentary rocks was recognized, but the structural features and the relations of the rocks were in the main misinterpreted. Fairbanks in his paper on the "Geology of Northern Ventura, Santa Barbara, San Luis Obispo, Monterey, and San Benito Counties" discussed the Santa Ynez Range. "There can be no doubt that the main portion of the Santa Ynez Range is Miocene with a general anticlinal structure, well shown in San Marcos Pass". "The normal type of anticlinal structure is also marked by an east west compression, producing features, however, of secondary importance." "As viewed from the south at various points the range consists of heavy bedded sandstones dipping at a high angle to the south." J.D. Whitney, Blake, Diller, and Eldridge, have made reports on the general region of the Santa Ynez Valley. Arnold and Anderson have covered this area in their report on the Santa Maria Oil District of California.

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