TECTONIC SIGNIFICANCE OF THE MCCOY MOUNTAINS FORMATION, SOUTHEASTERN CALIFORNIA AND SOUTHWESTERN ARIZONA
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azu_td_8217379_sip1_m.pdf
Issue Date
1982Keywords
Geology -- Arizona -- Yuma County.Geology -- California -- Riverside County.
Geology, Stratigraphic -- Mesozoic.
Geology, Structural.
Advisor
Butler, RobertCommittee Chair
Coney, Peter J.Metadata
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The University of Arizona.Rights
Copyright © is held by the author. Digital access to this material is made possible by 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.Abstract
Poorly preserved fossil wood collected throughout the terrane had been the basis of a Cretaceous age assignment. New age constraints come from paleomagnetic data which fail the fold test at both regional and local levels. These data indicate that the paleomagnetism was produced by a post-folding metamorphic event. The resulting paleomagnetic pole at 58.9°N, 114.6°E falls on the North American apparent polar wander path very near a pole from the Callovian Summerville Formation. These data imply that Callovian is a minimum age for the metamorphism and that the proto1ith is older.Type
textDissertation-Reproduction (electronic)
Degree Name
Ph.D.Degree Level
doctoralDegree Program
GeosciencesGraduate College