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Geology of the Tunis-Pastoria Creek area, Kern County, California

Citation

Harris, Paul Bernard (1950) Geology of the Tunis-Pastoria Creek area, Kern County, California. Master's thesis, California Institute of Technology. doi:10.7907/SA85-J484. https://resolver.caltech.edu/CaltechTHESIS:01302018-090328210

Abstract

The geology of the Tunis-Pastoria Creek area, located approximately thirty miles southeast of Bakersfield, California, is rather simple from a regional standpoint. It more closely resembles the geology of the eastern edge of the San Joaquin Valley than that of the Coast Range province to the west. In the area mapped, pre-Tertiary crystalline rocks of the Tehachapi Mountains are overlain with a depositional contact by Tertiary sedimentary and volcanic rocks. These Tertiary rocks range in age from Middle Eocene to Lower Pliocene. Extensive terrace deposits and tiled alluvial fans of Quaternary age record the more recent history of this part of the San Joaquin Valley.

Structurally the area is characterized by strata that dip moderately to the northwest, and by two sets of faults, one trending roughly parallel and the other perpendicular to the strike of the beds. Movement along most of these faults is believed to be of the normal type. Folding is minor and limited primarily to phenomena associated with faulting. Structures have been complicated by repeated periods of uplift and subsidence that have given rise to numerous unconformities in the Tertiary section.

Item Type:Thesis (Master's thesis)
Subject Keywords:San Joaquin Valley, Tehachapi Mountains, volcanic rocks, alluvial fans, Tejon Formation, Santa Margarita Formation
Degree Grantor:California Institute of Technology
Division:Geological and Planetary Sciences
Major Option:Geology
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Jahns, Richard H.
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1950
Additional Information:P. 69 missing from original thesis. Supplemental Files Information: Geologic map of the Tunis-Pastoria Creek area: Supplement 1 from "Geology of the Tunis-Pastoria Creek area, Kern County, California" (Thesis). Date(s) Collected: 1950-4-15. Geographic Location Point: 35 Degrees Latitude; -118.875 Degrees Longitude. Geologic cross-sections: Supplement 2 from "Geology of the Tunis-Pastoria Creek area, Kern County, California" (Thesis) Date(s) Collected: 1950-4-15. Generalized contour map, top of Santa Margarita Formation: Supplement 3 from "Geology of the Tunis-Pastoria Creek area, Kern County, California" (Thesis). Date(s) Collected: 1950-4-15.
Record Number:CaltechTHESIS:01302018-090328210
Persistent URL:https://resolver.caltech.edu/CaltechTHESIS:01302018-090328210
DOI:10.7907/SA85-J484
Related URLs:
URLURL TypeDescription
https://doi.org/10.22002/D1.822DOISupplement 1 in CaltechDATA: Geologic map of the Tunis-Pastoria Creek area
https://doi.org/10.22002/D1.823DOISupplement 2 in CaltechDATA: Geologic cross-sections
https://doi.org/10.22002/D1.824DOISupplement 3 in CaltechDATA: Generalized contour map, top of Santa Margarita Formation
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10653
Collection:CaltechTHESIS
Deposited By: Tony Diaz
Deposited On:30 Jan 2018 19:17
Last Modified:13 Apr 2023 21:57

Thesis Files

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PDF (Thesis) - Final Version
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45MB
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PDF (Plate 1. Geologic Map of the Tunis-Pastoria Creek Area) - Supplemental Material
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46MB
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PDF (Plate 2. Geologic Cross-Sections) - Supplemental Material
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67MB
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PDF (Plate 3. Generalized Contour Map. Top of Santa Margarita Formation) - Supplemental Material
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24MB

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