Late Holocene glacier fluctuations in the Wrangell Mountains, Alaska

Research Article| July 01, 2002 Late Holocene glacier fluctuations in the Wrangell Mountains, Alaska Gregory C. Wiles; Gregory C. Wiles 1Department of Geology, College of Wooster, Wooster, Ohio 44691, USA Search for other works by this author on: GSW Google Scholar Gordon C. Jacoby; Gordon C. Jacoby 2Tree Ring Laboratory, Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Nicole K. Davi; Nicole K. Davi 2Tree Ring Laboratory, Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Ryan P. McAllister Ryan P. McAllister 3Department of Geology, College of Wooster, Wooster, Ohio 44691, USA Search for other works by this author on: GSW Google Scholar GSA Bulletin (2002) 114 (7): 896–908. https://doi.org/10.1130/0016-7606(2002)114<0896:LHGFIT>2.0.CO;2 Article history received: 26 Mar 2001 rev-recd: 08 Feb 2002 accepted: 25 Feb 2002 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 Gregory C. Wiles, Gordon C. Jacoby, Nicole K. Davi, Ryan P. McAllister; Late Holocene glacier fluctuations in the Wrangell Mountains, Alaska. GSA Bulletin 2002;; 114 (7): 896–908. doi: https://doi.org/10.1130/0016-7606(2002)114<0896:LHGFIT>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 Four intervals of late Holocene glacier advance are recognized from study of nine valley glaciers in the Wrangell and westernmost St. Elias Mountains of Alaska. The oldest glacial advance is recognized at the Nabesna and Barnard Glaciers where five radiocarbon ages suggest advance as early as 2700 cal. (calibrated) yr B.P. Two additional radiocarbon-dated advances are centered on cal. yr A.D. 300 and the beginning of the Little Ice Age about A.D. 1200. The best-documented Little Ice Age advances occurred during the mid-1600s through the 1800s and are recognized at all nine glaciers. These latter advances are dated by tree rings of trees overrun by glaciers in five glacier valley, by 17 radiocarbon dates, and by tree-ring and lichen ages from 20 moraines that were deposited during the culmination of these advances. The glacial chronology is broadly similar to chronologies from adjoining Alaskan mountain ranges, at both coastal and interior sites for the past 3000 yr. There are, however, differences in timing of advances during the first millennium A.D. The glacial history for the past 2000 yr is also consistent with temperature-sensitive proxy records from interior Alaska and Yukon Territory. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.