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Petrology of the Hopewell Series in the Ojo Caliente of New Mexico


Shoemaker, Eugene Merle (1948) Petrology of the Hopewell Series in the Ojo Caliente of New Mexico. Master's thesis, California Institute of Technology.


The Hopewell series is a group of pre-Cambrian metamorphic rocks exposed in the Picuris, Petaca, and Ojo Caliente districts of northern New Mexico. In the Ojo Caliente district these and other pre-Cambrian rocks are exposed in an elongate inlier in the surrounding Tertiary strata. This inlier represents a low mountain or monadnock on an early Tertiary erosion surface. The Hopewell series has been divided into two phases, the Picuris basalt and a series of metasedimentary rocks. Both general rock types show a well defined sequence of metamorphic degree, but the variation of metamorphic degree is roughly bedding controled. The highest degree of metamorphism noted in the area is correlative with the sillimanite zone. In type, the metamorphic processes involved could be classed as normal regional metamorphism, which includes a certain amount of metasomatism. From the evidence in the Ojo Caliente district it seems probable that the processes of normal regional metamorphism were carried out in large part under the influence of hydrothermal solutions.

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):
  • Jahns, Richard H.
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1948
Record Number:CaltechETD:etd-06282004-155653
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2752
Deposited By: Imported from ETD-db
Deposited On:29 Jun 2004
Last Modified:27 Jan 2017 22:28

Thesis Files

PDF - Final Version
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PDF (Geologic map of the Ojo Caliente District) - Supplemental Material
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PDF (Structure section between Ojo Caliente and La Madera Mountains) - Supplemental Material
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