Chlorine in oceanic intraplate basalts: Constraints on mantle sources and recycling processes

Research Article| November 01, 2004 Chlorine in oceanic intraplate basalts: Constraints on mantle sources and recycling processes Nicole A. Stroncik; Nicole A. Stroncik 1Institut für Geowissenschaften der Universität Kiel, Olshausenstrasse 40, D-24118 Kiel, Germany Search for other works by this author on: GSW Google Scholar Karsten M. Haase Karsten M. Haase 1Institut für Geowissenschaften der Universität Kiel, Olshausenstrasse 40, D-24118 Kiel, Germany Search for other works by this author on: GSW Google Scholar Geology (2004) 32 (11): 945–948. https://doi.org/10.1130/G21027.1 Article history received: 13 May 2004 rev-recd: 06 Aug 2004 accepted: 09 Aug 2004 first online: 03 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 Nicole A. Stroncik, Karsten M. Haase; Chlorine in oceanic intraplate basalts: Constraints on mantle sources and recycling processes. Geology 2004;; 32 (11): 945–948. doi: https://doi.org/10.1130/G21027.1 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 Submarine volcanic glass data from different hotspot regions indicate that the Cl inventory and the Cl/K ratios of the mantle are variable. The majority of hotspot lavas have higher Cl/K ratios than depleted mid-oceanic-ridge basalts, consistent with the presence of recycled crustal components in the mantle-plume sources of hotspots. Enriched mantle sources (EM1 and EM2) have relatively low Cl/K ratios, suggesting significant devolatilization of the subducted sedimentary material. Lavas from HIMU-type hotspots (high μ, μ = 238U/204Pb) have the highest but variable Cl/K, most likely due to the presence of recycled altered oceanic lithosphere in their source. Near-ridge hotspots show correlations between Cl/ K ratios and radiogenic isotopes, supporting mixing between plume and depleted upper-mantle material. The variable Cl/K ratios in the HIMU-type magmas and the low Cl/K ratios in the EM-type magmas suggest that the quantity of Cl recycled into the mantle via subduction is not uniform. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.