Revised ages for tuffs of the Yellowstone Plateau volcanic field: Assignment of the Huckleberry Ridge Tuff to a new geomagnetic polarity event

Research Article| May 01, 2002 Revised ages for tuffs of the Yellowstone Plateau volcanic field: Assignment of the Huckleberry Ridge Tuff to a new geomagnetic polarity event Marvin A. Lanphere; Marvin A. Lanphere 1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar Duane E. Champion; Duane E. Champion 1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar Robert L. Christiansen; Robert L. Christiansen 1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar Glen A. Izett; Glen A. Izett 23012 East Whittaker Close, Williamsburg, Virginia 23185, USA Search for other works by this author on: GSW Google Scholar John D. Obradovich John D. Obradovich 3U.S. Geological Survey, Box 25046, Denver Federal Center, Denver, Colorado 80225, USA Search for other works by this author on: GSW Google Scholar GSA Bulletin (2002) 114 (5): 559–568. https://doi.org/10.1130/0016-7606(2002)1142.0.CO;2 Article history received: 22 Jan 2001 rev-recd: 03 Dec 2001 accepted: 03 Dec 2001 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 Marvin A. Lanphere, Duane E. Champion, Robert L. Christiansen, Glen A. Izett, John D. Obradovich; Revised ages for tuffs of the Yellowstone Plateau volcanic field: Assignment of the Huckleberry Ridge Tuff to a new geomagnetic polarity event. GSA Bulletin 2002;; 114 (5): 559–568. doi: https://doi.org/10.1130/0016-7606(2002)1142.0.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 40Ar/39Ar ages were determined on the three major ash-flow tuffs of the Yellowstone Plateau volcanic field in the region of Yellowstone National Park in order to improve the precision of previously determined ages. Total-fusion and incremental- heating ages of sanidine yielded the following mean ages: Huckleberry Ridge Tuff—2.059 ± 0.004 Ma; Mesa Falls Tuff— 1.285 ± 0.004 Ma; and Lava Creek Tuff— 0.639 ± 0.002 Ma.The Huckleberry Ridge Tuff has a transitional magnetic direction and has previously been related to the Reunion Normal- Polarity Subchron. Dating of the Reunion event has been reviewed and its ages have been normalized to a common value for mineral standards. The age of the Huckleberry Ridge Tuff is significantly younger than lava flows of the Reunion event on Ré union Island, supporting other evidence for a normal-polarity event younger than the Reunion event. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.