Early Miocene mylonitization and detachment faulting, South Mountains, central Arizona

Abstract

Research Article| April 01, 1986 Early Miocene mylonitization and detachment faulting, South Mountains, central Arizona Stephen J. Reynolds; Stephen J. Reynolds 1Arizona Bureau of Geology and Mineral Technology, 845 N. Park Avenue, Tucson, Arizona 85719 Search for other works by this author on: GSW Google Scholar M. Shafiqullah; M. Shafiqullah 2Laboratory of Isotope Geochemistry, Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar Paul E. Damon; Paul E. Damon 2Laboratory of Isotope Geochemistry, Department of Geosciences, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar Ed DeWitt Ed DeWitt 3U.S. Geological Survey, Federal Center, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Geology (1986) 14 (4): 283–286. https://doi.org/10.1130/0091-7613(1986)14<283:EMMADF>2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Stephen J. Reynolds, M. Shafiqullah, Paul E. Damon, Ed DeWitt; Early Miocene mylonitization and detachment faulting, South Mountains, central Arizona. Geology 1986;; 14 (4): 283–286. doi: https://doi.org/10.1130/0091-7613(1986)14<283:EMMADF>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The South Mountains of central Arizona are one of the geologically simplest metamorphic core complexes of the North American Cordillera. An early Miocene age of mylonitization is indicated by crosscutting relationships between mylonitic fabric and a composite pluton dated at 22–25 Ma by Rb-Sr, U-Th-Pb, and K-Ar techniques. The kinematic agreement and close temporal association of mylonitization and detachment faulting support models in which the two processes are related to an evolving crustal shear zone that accommodated mid-Tertiary continental extension. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.