Citation
Kovach, Robert Louis (1962) Geophysical Investigations in the Colorado Delta Region. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/B362-3G65. https://resolver.caltech.edu/CaltechTHESIS:12072009-142350784
Abstract
The combined approach of gravity and seismic re-fraction exploration was used to determine depths of the Cenozoic section and to study the fault pattern in the Colorado Delta region. Basement depths measured varied from about 2200 feet to a minimum depth of 15,400 feet along the international border, east of Calexico. A study of the seismicity of the region shows that the greatest seismic activity over the past 60 years has been along the San Jacinto fault system. Continuity of specific major faults is difficult to establish using gravity methods alone because of the lack of indicated vertical throw on the faults. No conclusive evidence is presented for establishing the continuity of the Mission Creek-Banning fault southward into the present area of investigation, although geophysical evidence is presented for a fault present beneath the Sand hills (Algodones Dunes).
| Item Type: | Thesis (Dissertation (Ph.D.)) | |||||||||
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| Subject Keywords: | (Geophysics) ; gravity refraction, seismic refraction, Colorado Delta, San Jacinto Fault, Algodones Dunes, Imperial Valley | |||||||||
| Degree Grantor: | California Institute of Technology | |||||||||
| Division: | Geological and Planetary Sciences | |||||||||
| Major Option: | Geophysics | |||||||||
| Thesis Availability: | Public (worldwide access) | |||||||||
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| Defense Date: | 1 January 1962 | |||||||||
| Additional Information: | Supplemental Files Information: Bouguer anomaly map of the Colorado Delta region: Supplement 1 from "Geophysical investigations in the Colorado delta region" (Thesis). Geographic Location Bounding Box: -114.5 Degrees East; -116.5 Degrees West; 33.25 Degrees North; 32.75 Degrees South. Anomalia de Bouguer en el Delta del Colorado: Supplement 2 from "Geophysical investigations in the Colorado delta region" (Thesis). Geographic Location Bounding Box: -114.5 Degrees East; -115.75 Degrees West; 32.75 Degrees North; 32.0 Degrees South. | |||||||||
| Record Number: | CaltechTHESIS:12072009-142350784 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechTHESIS:12072009-142350784 | |||||||||
| DOI: | 10.7907/B362-3G65 | |||||||||
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| Default Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 5426 | |||||||||
| Collection: | CaltechTHESIS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 07 Dec 2009 22:57 | |||||||||
| Last Modified: | 27 Nov 2023 19:44 |
Thesis Files
![[img]](https://thesis.library.caltech.edu/style/images/fileicons/application_pdf.png)
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PDF
- Final Version
See Usage Policy. 4MB | |
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PDF (Plate 1)
- Supplemental Material
See Usage Policy. 48MB | |
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PDF (Plate 2)
- Supplemental Material
See Usage Policy. 16MB |
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