Shear-zone model for the origin of metamorphic core complexes

Research Article| June 01, 1983 Shear-zone model for the origin of metamorphic core complexes George H. Davis George H. Davis 1Department of Geosciences University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar Geology (1983) 11 (6): 342–347. https://doi.org/10.1130/0091-7613(1983)11<342:SMFTOO>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 George H. Davis; Shear-zone model for the origin of metamorphic core complexes. Geology 1983;; 11 (6): 342–347. doi: https://doi.org/10.1130/0091-7613(1983)11<342:SMFTOO>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 Core-complex tectonite results from simple-shear rotational strain within regional ductile shear zones that have accommodated a Tertiary crustal stretching. The emplacement of younger and/or upper-level nontectonite rocks on older and/or deeper level tectonites is the ordinary and predictable result of normal-slip translation along shear zones that cut upward through the local geologic column. Progressive deformation produces a structural stratigraphy marked, from bottom to top, by normal country-rock protolith, mylonitic gneiss, tectonite carapace, microbrecciated tectonite, microbreccia, decollement, and upper-plate detachment rocks (as young as mid-Miocene). The reconstructions suggest that local regional crustal stretching locally exceeded 100%. 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.