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Incremental growth of the Patagonian Torres del Paine laccolith over 90 k.y

2008; Geological Society of America; Volume: 36; Issue: 6 Linguagem: Inglês

10.1130/g24546a.1

1943-2682

Jürgen Michel, Lukas P. Baumgartner, Benita Putlitz, Urs Schaltegger, Maria Ovtcharova,

Pleistocene-Era Hominins and Archaeology

Research Article| June 01, 2008 Incremental growth of the Patagonian Torres del Paine laccolith over 90 k.y. Jürgen Michel; Jürgen Michel 1Institute of Mineralogy and Geochemistry, University of Lausanne, 1015 Lausanne, Switzerland Search for other works by this author on: GSW Google Scholar Lukas Baumgartner; Lukas Baumgartner 1Institute of Mineralogy and Geochemistry, University of Lausanne, 1015 Lausanne, Switzerland Search for other works by this author on: GSW Google Scholar Benita Putlitz; Benita Putlitz 1Institute of Mineralogy and Geochemistry, University of Lausanne, 1015 Lausanne, Switzerland Search for other works by this author on: GSW Google Scholar Urs Schaltegger; Urs Schaltegger 2Department of Earth Sciences, University of Geneva, 1205 Geneva, Switzerland Search for other works by this author on: GSW Google Scholar Maria Ovtcharova Maria Ovtcharova 2Department of Earth Sciences, University of Geneva, 1205 Geneva, Switzerland Search for other works by this author on: GSW Google Scholar Author and Article Information Jürgen Michel 1Institute of Mineralogy and Geochemistry, University of Lausanne, 1015 Lausanne, Switzerland Lukas Baumgartner 1Institute of Mineralogy and Geochemistry, University of Lausanne, 1015 Lausanne, Switzerland Benita Putlitz 1Institute of Mineralogy and Geochemistry, University of Lausanne, 1015 Lausanne, Switzerland Urs Schaltegger 2Department of Earth Sciences, University of Geneva, 1205 Geneva, Switzerland Maria Ovtcharova 2Department of Earth Sciences, University of Geneva, 1205 Geneva, Switzerland Publisher: Geological Society of America Received: 24 Oct 2007 Revision Received: 31 Jan 2008 Accepted: 13 Feb 2008 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2008 Geological Society of America Geology (2008) 36 (6): 459–462. https://doi.org/10.1130/G24546A.1 Article history Received: 24 Oct 2007 Revision Received: 31 Jan 2008 Accepted: 13 Feb 2008 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 Jürgen Michel, Lukas Baumgartner, Benita Putlitz, Urs Schaltegger, Maria Ovtcharova; Incremental growth of the Patagonian Torres del Paine laccolith over 90 k.y.. Geology 2008;; 36 (6): 459–462. doi: https://doi.org/10.1130/G24546A.1 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 The Miocene Paine Granite in the Torres del Paine Intrusive Complex, southern Chile, is an extraordinary example of an upper crustal mafic and granitic intrusion. The granite intruded as a series of three sheets, each one underplating the previous sheet along the top of the basal Paine Mafic Complex. High-precision U/Pb geochronology on single zircons using isotope dilution–thermal ionization mass spectrometry yields distinct ages of 12.59 ± 0.02 Ma and 12.50 ± 0.02 Ma, respectively, for the first and last sheet of the laccolith. This age relationship is consistent with field observations. The zircon ages define a time frame of 90 ± 40 k.y. for the emplacement of a >2000-m-thick granite laccolith. These precise U-Pb zircon ages permit identification of the pulses in a 20 k.y. range. The data obtained for the Paine Granite fill the gap between 100 k.y. and 100–1000 yr pulses described in the literature for crustal magma chambers. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.