Dating of Quaternary basalts using the cosmogenic 3He and 14C methods with implications for excess 40Ar

Abstract

Research Article| February 01, 1994 Dating of Quaternary basalts using the cosmogenic 3He and 14C methods with implications for excess 40Ar A. William Laughlin; A. William Laughlin 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Search for other works by this author on: GSW Google Scholar Jane Poths; Jane Poths 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Search for other works by this author on: GSW Google Scholar Heather A. Healey; Heather A. Healey 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Search for other works by this author on: GSW Google Scholar Steven Reneau; Steven Reneau 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Search for other works by this author on: GSW Google Scholar Giday WoldeGabriel Giday WoldeGabriel 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Search for other works by this author on: GSW Google Scholar Author and Article Information A. William Laughlin 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Jane Poths 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Heather A. Healey 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Steven Reneau 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Giday WoldeGabriel 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1994) 22 (2): 135–138. https://doi.org/10.1130/0091-7613(1994)022<0135:DOQBUT>2.3.CO;2 Article history First Online: 02 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 A. William Laughlin, Jane Poths, Heather A. Healey, Steven Reneau, Giday WoldeGabriel; Dating of Quaternary basalts using the cosmogenic 3He and 14C methods with implications for excess 40Ar. Geology 1994;; 22 (2): 135–138. doi: https://doi.org/10.1130/0091-7613(1994)022<0135:DOQBUT>2.3.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 SocietyGeology Search Advanced Search Abstract Concordant radiocarbon and cosmogenic 3He dates of 3 and 11 ka on basalt flows and associated scoria deposits from the Zuni-Bandera volcanic field in New Mexico further substantiate published production rates and latitudinal and altitudinal corrections for 3He. Identical 3He concentrations in coexisting olivine and clinopyroxene confirm that these two minerals have very similar production rates. A cosmogenic 3He date of 57 ka on another flow is concordant with a U-series date and is younger than two K-Ar dates, suggesting that this flow contains excess 40Ar. This excess 40Ar is also evident in gases released by vacuum crushing of olivine-clinopyroxene fractions from all three flows. 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.