Potassium-Argon Ages from Lavas of the Hawaiian Islands

Research Article| February 01, 1964 Potassium-Argon Ages from Lavas of the Hawaiian Islands IAN McDOUGALL IAN McDOUGALL Dept. Geophysics, Australian National University, Canberra, A.C.T., Australia Search for other works by this author on: GSW Google Scholar Author and Article Information IAN McDOUGALL Dept. Geophysics, Australian National University, Canberra, A.C.T., Australia Publisher: Geological Society of America Received: 20 Jun 1963 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1964, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1964) 75 (2): 107–128. https://doi.org/10.1130/0016-7606(1964)75[107:PAFLOT]2.0.CO;2 Article history Received: 20 Jun 1963 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation IAN McDOUGALL; Potassium-Argon Ages from Lavas of the Hawaiian Islands. GSA Bulletin 1964;; 75 (2): 107–128. doi: https://doi.org/10.1130/0016-7606(1964)75[107:PAFLOT]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 Thirty six samples of lava from seven of the Hawaiian volcanoes have been dated by the K-Ar method. The results show that the order of extinction of the volcanoes, excluding minor activity after the main shield-building phase was completed, occurred along the island chain from northwest to southeast. All the lavas are late Pliocene and Pleistocene, excepting the Mauna Kuwale trachyte, which is early to middle Pliocene. The exposed parts of the volcanoes dated were built in less than 0.5 m.y., with the exception of the Waianae volcano of West Oahu, which was active over more than 0.7 m.y., and Kauai, which was active over more than 1.8 m.y. The thin veneer of alkali lavas of the main shield-building phase generally is less than 0.2 m.y. younger than the underlying "primitive" basaltic lavas, of which the Hawaiian volcanoes are mainly built. 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.