Subsurface configuration of the Orleans fault: Implications for deformation in the western Klamath Mountains, California

Abstract

Research Article| April 01, 1986 Subsurface configuration of the Orleans fault: Implications for deformation in the western Klamath Mountains, California R. C. JACHENS; R. C. JACHENS 1U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar C. G. BARNES; C. G. BARNES 2Department of Geosciences, Texas Tech University, Lubbock, Texas 79409 Search for other works by this author on: GSW Google Scholar M. M. DONATO M. M. DONATO 1U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar Author and Article Information R. C. JACHENS 1U.S. Geological Survey, Menlo Park, California 94025 C. G. BARNES 2Department of Geosciences, Texas Tech University, Lubbock, Texas 79409 M. M. DONATO 1U.S. Geological Survey, Menlo Park, California 94025 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1986) 97 (4): 388–395. https://doi.org/10.1130/0016-7606(1986)97<388:SCOTOF>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 R. C. JACHENS, C. G. BARNES, M. M. DONATO; Subsurface configuration of the Orleans fault: Implications for deformation in the western Klamath Mountains, California. GSA Bulletin 1986;; 97 (4): 388–395. doi: https://doi.org/10.1130/0016-7606(1986)97<388:SCOTOF>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 SocietyGSA Bulletin Search Advanced Search Abstract Geologic and geophysical evidence from western Klamath Mountains, California, provides quantitative information on the shape and regional subsurface extent of the Orleans fault. This major Jurassic thrust fault lies beneath all exposures of the western Paleozoic and Triassic belt within the study area and mainly dips gently or is subhorizontal. The regional extent of the juxtaposition of different units across the fault implies a minimum horizontal displacement of 110 km due to westward overthrusting. The fault cuts the Wooley Creek batholith, which indicates that thrusting took place after intrusion at 163±3 Ma. The shape of the fault near Condrey Mountain is consistent with post-thrusting Neogene uplift of the Condrey Mountain dome and suggests a minimum of 6 km of differential uplift. 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.