Geomorphic Evidence for Late-Wisconsin and Holocene Tectonic Deformation, Death Valley, California

Research Article| July 01, 1972 Geomorphic Evidence for Late-Wisconsin and Holocene Tectonic Deformation, Death Valley, California ROGER LeB HOOKE ROGER LeB HOOKE Department of Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota 55455 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1972) 83 (7): 2073–2098. https://doi.org/10.1130/0016-7606(1972)832073:GEFLAH2.0.CO;2 Article history received: 28 Feb 1972 first online: 02 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 ROGER LeB HOOKE; Geomorphic Evidence for Late-Wisconsin and Holocene Tectonic Deformation, Death Valley, California. GSA Bulletin 1972;; 83 (7): 2073–2098. doi: https://doi.org/10.1130/0016-7606(1972)832073:GEFLAH2.0.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 Eastward tilting of the Death Valley-Panamint Range structural block has resulted in segmentation of alluvial fans in south-central Death Valley. The youngest segment is generally near the fanhead on the east side and always near the toe on the west side. Six episodes of tilting have occurred, three of which postdate the last major high stand of Lake Manly, herein named the Blackwelder stand, which ended about 10,500 yrs ago. Estimates of the volume of sediment deposited after each episode of tilting suggest that distinct tectonic events occurred approximately 200, 1,000, 6,000, 17,000, 30,000, and 42,000 yrs ago. The average tilting rate appears to have increased exponentially with time.On the Black Mountains, immediately east of the structural block, deposits of tufa and of carbonate-cemented lacustrine, alluvial, and colluvial gravel of diverse age are presently perched at elevations up to 100m above present fans in positions where they could not have formed without support from older fans. On the west side of the valley, shorelines cut during the Blackwelder stand are about 30 m lower than these perched tufa and gravel deposits. Calculations based on these observations suggest that the average tilting rate doubled every 23,000 yrs during the late Wisconsin. The present rate is about 0.016 degrees/1,000 yrs. 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.