Extensional fault uplift of regional Franciscan blueschists die to subduction shallowing during the Laramide orogeny

Research Article| December 01, 1989 Extensional fault uplift of regional Franciscan blueschists die to subduction shallowing during the Laramide orogeny Scot W. Krueger; Scot W. Krueger 1Department of Geology and Geophysics, University of California, Berkeley, California 94720 Search for other works by this author on: GSW Google Scholar David L. Jones David L. Jones 1Department of Geology and Geophysics, University of California, Berkeley, California 94720 Search for other works by this author on: GSW Google Scholar Author and Article Information Scot W. Krueger 1Department of Geology and Geophysics, University of California, Berkeley, California 94720 David L. Jones 1Department of Geology and Geophysics, University of California, Berkeley, California 94720 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1989) 17 (12): 1157–1159. https://doi.org/10.1130/0091-7613(1989)017<1157:EFUORF>2.3.CO;2 Article history First Online: 02 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 Scot W. Krueger, David L. Jones; Extensional fault uplift of regional Franciscan blueschists die to subduction shallowing during the Laramide orogeny. Geology 1989;; 17 (12): 1157–1159. doi: https://doi.org/10.1130/0091-7613(1989)017<1157:EFUORF>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 SocietyGeology Search Advanced Search Abstract Regional structural and stratigraphic relations in the northern California Coast Ranges require an episode of extensional tectonic unroofmg of coherent blueschist terranes of the Eastern belt of the Franciscan complex along a crustal-scale, low-angle, normal-fault system, here named the Coast Range detachment. This tectonic unroofmg occurred during the latest Cretaceous and early Tertiary, contemporaneous with the compressional Laramide orogeny of the North American interior. Dynamic models of accretionary wedges predict that shallowing of subduction, as has been inferred during the Laramide orogeny, will impart extensional stresses in the wedge above the subducting plate. We therefore suggest a single causal event—gradual shallowing of subduction in the latest Cretaceous and early Tertiary—to link the extensional fault uplift of regional Franciscan blueschists to Laramide compression in the North American interior. 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.