Precambrian Geology of the Cottonwood Cliffs Area, Mohave County, Arizona

Persistent Link:
http://hdl.handle.net/10150/244095
Title:
Precambrian Geology of the Cottonwood Cliffs Area, Mohave County, Arizona
Author:
Beard, Linda Sue
Issue Date:
1985
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the Antevs Library, Department of Geosciences, and the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author or the department.
Collection Information:
This item is part of the Geosciences Theses collection. It was digitized from a physical copy provided by the Antevs Library, Department of Geosciences, University of Arizona. For more information about items in this collection, please email the Antevs Library, antevs@geo.arizona.edu.
Abstract:
A belt of Early Proterozoic rocks crops out in the Cottonwood Cliffs area, northwest Arizona. The belt contains an eastern and a western assemblage separated by the Slate Mountain fault. The western assemblage consists of mafic to felsic metavolcanic rocks, metapelites, and metaconglomerates. The eastern assemblage consists of phyllites, felsic to intermediate metavolcanic rocks, metagraywackes, and metagabbro bodies. The belt is bounded to the east by foliated granodiorite. The Valentine granite intruded the belt on the west and north. Steeply-plunging lineations and fold axes, and northeast-trending vertical foliation dominate the structural fabric. The regional elongation direction is near-vertical, as indicated by mineral and pebble lineations, and is parallel to fold axes. Although only one deformational event is evident, the intensity of that event may have obliterated evidence of any earlier deformation. Tertiary basalts and the Peach Springs Tuff locally overly the metamorphic rocks. Cenozoic normal faults in the area are mostly of minor displacement.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Arizona; axial-plane structures; Cenozoic; Cottonwood Cliffs; folds; foliation; intrusions; lineation; lithostratigraphy; metamorphic rocks; Miocene; Mohave County Arizona; Neogene; northwestern Arizona; Peach Springs Tuff; Precambrian; Proterozoic; Slate Mountain Fault; stratigraphy; structural analysis; Tertiary; United States; upper Precambrian; Valentine Granite; Geology, Stratigraphic -- Precambrian; Geology -- Arizona -- Mohave County
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Geosciences
Degree Grantor:
University of Arizona
Advisor:
Davis, George H.
Committee Chair:
Davis, George H.

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