A model for Neogene crustal rotations, transtension, and transpression in southern California

Research Article| November 01, 1991 A model for Neogene crustal rotations, transtension, and transpression in southern California BRUCE P. LUYENDYK BRUCE P. LUYENDYK 1Institute for Crustal Studies and Department of Geological Sciences, University of California, Santa Barbara, California 93106 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1991) 103 (11): 1528–1536. https://doi.org/10.1130/0016-7606(1991)103<1528:AMFNCR>2.3.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 BRUCE P. LUYENDYK; A model for Neogene crustal rotations, transtension, and transpression in southern California. GSA Bulletin 1991;; 103 (11): 1528–1536. doi: https://doi.org/10.1130/0016-7606(1991)103<1528:AMFNCR>2.3.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 SocietyGSA Bulletin Search Advanced Search Abstract Two episodes of crustal rotation have occurred in the regions of southern California and the Mojave Desert since the beginning of Miocene time. An early Miocene episode of clockwise crustal rotation is associated with widespread north-south to north-northeast-south-southwest crustal extension throughout southeast California and western Arizona. This episode is apparently related to changing subduction parameters of the Farallon plate. A middle Miocene and later episode of clockwise rotation in the Transverse Ranges and bordering areas is related to shear between the Pacific and North American plates. In both episodes, clockwise crustal rotations first occur in a deforming zone which has a component of extension across its trend and shear along its trend. The effects of extension are most pronounced in the earlier episode but clear in the later one also. The Pacific-North American deforming zone began contracting in width during Pliocene time, but clockwise rotations continued and are probably in progress today. 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.