Geometries of extensional fault systems developed in model experiments

Research Article| April 01, 1987 Geometries of extensional fault systems developed in model experiments K. R. McClay; K. R. McClay 1Department of Geology, Royal Holloway and Bedford New College, University of London, Egham, Surrey TW20 OEX, England Search for other works by this author on: GSW Google Scholar P. G. Ellis P. G. Ellis 2Department of Earth Sciences, University of London, Goldsmiths' College, London SE8 3BU, England Search for other works by this author on: GSW Google Scholar Author and Article Information K. R. McClay 1Department of Geology, Royal Holloway and Bedford New College, University of London, Egham, Surrey TW20 OEX, England P. G. Ellis 2Department of Earth Sciences, University of London, Goldsmiths' College, London SE8 3BU, England Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1987) 15 (4): 341–344. https://doi.org/10.1130/0091-7613(1987)15<341:GOEFSD>2.0.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 K. R. McClay, P. G. Ellis; Geometries of extensional fault systems developed in model experiments. Geology 1987;; 15 (4): 341–344. doi: https://doi.org/10.1130/0091-7613(1987)15<341:GOEFSD>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 geometries of extensional fault systems have been studied by use of experimental sand analogues and are compared with examples in the literature. Extensional faulting above a uniformly extending basement produces a domino-style fault array involving both planar rotational faults and listric faults. The faults evolve with time and may change from listric geometries (concave upward) through planar fault segments to convex-upward geometries. At high extensional strains early faults are cut by later high-angle planar extensional faults. Hanging-wall deformation above a simple listric extensional detachment is characterized by faults that nucleate and propagate into the hanging wall and produce crestal collapse grabens. Listric extensional faults with a ramp/flat geometry also produce hanging-wall crestal collapse grabens and local reverse faults. The experiments show that hanging-wall blocks in listric extensional fault systems must undergo significant internal strains in order to accommodate progressive deformation over nonplanar fault surfaces. 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.