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Geology of the Le Brun and Mint Canyon Quadrangles, California


Scherb, Ivan Victor (1935) Geology of the Le Brun and Mint Canyon Quadrangles, California. Bachelor's thesis, California Institute of Technology. doi:10.7907/RC5N-4B66.


The Le Brun and Mint Canyon Quadrangles comprise an area of approximately fifty-two square miles. The northern part of the Le Brun Quadrangle is made up of three fundamental geologic units. Steeply dipping Tertiary sediments form a wedge, which narrows eastward, between an igneous complex to the north and a metamorphic series to the south. Three rock units are all bounded by steep, northerly dipping faults. The faulting is post-Oligocene and pre-Pleistocene in age. Everywhere the faults are truncated by an old land surface which is several stages removed from some of the more progressive land forms of the present cycle. The southern part of the Le Brun Quadrangle is composed largely of the metamorphic series which forms Sierra Pelona Ridge.

In the northern part of the Mint Canyon Quadrangle, the sedimentary wedge is terminated by a series of intersecting faults which persist to the eastern edge of the area and continue into the San Andreas Rift, several miles east of the boundary of the Mint Canyon Quadrangle. The central portion of the Mint Canyon Quadrangle is formed by the metamorphic series and is expressed topographically by Sierra Pelona Ridge. In the southern part of this quadrangle, an intricate system of faulted igneous and sedimentary beds are exposed. Easterly, this fault system disappears.

Item Type:Thesis (Bachelor's thesis)
Subject Keywords:Le Brun Canyon, Mint Canyon, Sierra Pelona Ridge, San Andreas Rift
Degree Grantor:California Institute of Technology
Division:Geological and Planetary Sciences
Major Option:Geology
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Maxson, John H.
Thesis Committee:
  • None, None
Defense Date:1 January 1935
Additional Information:Supplemental Files Information: Geologic Map of Le Brun and Mint Canyon Quadrangles: Supplement 1 from "Geology of the Le Brun and Mint Canyon quadrangles, California" (Thesis). Geographic Location Bounding Box: -118.3 Degrees East; -118.5 Degrees West; 34.6 Degrees North; 34.5 Degrees South.
Record Number:CaltechTHESIS:12072009-140946030
Persistent URL:
Related URLs:
URLURL TypeDescription 1 in CaltechDATA: Geologic Map of Le Brun and Mint Canyon Quadrangles
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5424
Deposited By: Tony Diaz
Deposited On:07 Dec 2009 22:40
Last Modified:03 Oct 2019 23:43

Thesis Files

PDF (Thesis) - Final Version
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PDF (Geologic Map) - Supplemental Material
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