Denali fault slip rates and Holocene–late Pleistocene kinematics of central Alaska

Abstract

Research Article| August 01, 2006 Denali fault slip rates and Holocene–late Pleistocene kinematics of central Alaska A. Matmon; A. Matmon 1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar D.P. Schwartz; D.P. Schwartz 1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar P.J. Haeussler; P.J. Haeussler 2U.S. Geological Survey, 4200 University Drive, Anchorage, Alaska 99508, USA Search for other works by this author on: GSW Google Scholar R. Finkel; R. Finkel 3Lawrence Livermore National Laboratory, Livermore, California 94550, USA Search for other works by this author on: GSW Google Scholar J.J. Lienkaemper; J.J. Lienkaemper 4U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar H.D. Stenner; H.D. Stenner 4U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar TE. Dawson TE. Dawson 4U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar Author and Article Information A. Matmon 1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA D.P. Schwartz 1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA P.J. Haeussler 2U.S. Geological Survey, 4200 University Drive, Anchorage, Alaska 99508, USA R. Finkel 3Lawrence Livermore National Laboratory, Livermore, California 94550, USA J.J. Lienkaemper 4U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA H.D. Stenner 4U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA TE. Dawson 4U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Publisher: Geological Society of America Received: 26 Oct 2005 Revision Received: 16 Mar 2006 Accepted: 18 Mar 2006 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2006) 34 (8): 645–648. https://doi.org/10.1130/G22361.1 Article history Received: 26 Oct 2005 Revision Received: 16 Mar 2006 Accepted: 18 Mar 2006 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation A. Matmon, D.P. Schwartz, P.J. Haeussler, R. Finkel, J.J. Lienkaemper, H.D. Stenner, TE. Dawson; Denali fault slip rates and Holocene–late Pleistocene kinematics of central Alaska. Geology 2006;; 34 (8): 645–648. doi: https://doi.org/10.1130/G22361.1 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 Denali fault is the principal intracontinental strike-slip fault accommodating deformation of interior Alaska associated with the Yakutat plate convergence. We obtained the first quantitative late Pleistocene–Holocene slip rates on the Denali fault system from dating offset geomorphic features. Analysis of cosmogenic 10Be concentrations in boulders (n = 27) and sediment (n = 13) collected at seven sites, offset 25–170 m by the Denali and Totschunda faults, gives average ages that range from 2.4 ± 0.3 ka to 17.0 ± 1.8 ka. These offsets and ages yield late Pleistocene– Holocene average slip rates of 9.4 ± 1.6, 12.1 ± 1.7, and 8.4 ± 2.2 mm/yr−1 along the western, central, and eastern Denali fault, respectively, and 6.0 ± 1.2 mm/yr−1 along the Totschunda fault. Our results suggest a westward decrease in the mean Pleistocene– Holocene slip rate. This westward decrease likely results from partitioning of slip from the Denali fault system to thrust faults to the north and west. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.