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Structural Evolution of the McDowell Mountains, Maricopa County, Arizona


Abstract ABSTRACT The accretion of juvenile island-arc lithosphere by convergent tectonism during the Paleoproterozoic, in conjunction with felsic volcanism, resulted in the assembly, ductile to partial brittle deformation, uplift, and northwest-directed thrusting of rocks in the McDowell Mountains region and adjacent areas in the Mazatzal Orogenic belt. Utilizing lithologic characteristics and petrographic analysis of the Proterozoic bedrock, a correlation to the Alder series was established, revising the stratigraphic sequences described by earlier works. The central fold belt, composed of an open, asymmetric syncline and an overturned, isoclinal anticline, is cut by an axial-plane parallel reactivated thrust zone that is intruded by a deformed Pa... (more)
Created Date 2012
Contributor Vance, Brad L. (Author) / Reynolds, Stephen J. (Advisor) / Semken, Steven (Committee member) / Stump, Edmund (Committee member) / Arizona State University (Publisher)
Subject Geology / Fountain Hills / Mazatzal / McDowell Mountains / Proterozoic / Structure
Type Masters Thesis
Extent 124 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note M.S. Geological Sciences 2012
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis