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Structural study of a portion of the Lang and Humphreys quadrangles, Los Angeles County, California


Uhrig, Leonard Frederick (1936) Structural study of a portion of the Lang and Humphreys quadrangles, Los Angeles County, California. Master's thesis, California Institute of Technology.


In this report the area mapped north of the San Gabriel Mountains in the Lang and Humphreys Quadrangles is considered primarily from the structural point of view. A portion of this area at the head of Tick Canyon was mapped by Y. Bonillaas in 1933. During the year 1934-5, Mr. C. Dawson and the writer extended this work independent of the other.

W.S. Kew in Bulletin 753 of the U.S.G.S. has described much of the geology of the area. O.H. Hershey has described the Escondido formation outcropping in Tick Canyon, in the Amer. Meol. Vol. 29, p356. Brief descriptions of the borax deposits in Tick Canyon are found in Econ. Geol. Vol. 16, 1921 and U.S.G.S. Prof. Paper 158, 1931.

Item Type:Thesis (Master's thesis)
Subject Keywords:Geology
Degree Grantor:California Institute of Technology
Division:Geological and Planetary Sciences
Major Option:Geology
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1936
Record Number:CaltechTHESIS:03282010-111919127
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5625
Deposited By: Tony Diaz
Deposited On:15 Apr 2010 17:05
Last Modified:23 Oct 2017 16:21

Thesis Files

PDF - Final Version
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PDF (Plate 1) - Supplemental Material
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PDF (Plate 2) - Supplemental Material
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