Evidence from correlated Ir/Os and Cu/S for late-stage Os mobility in peridotite xenoliths: Implications for Re-Os systematics

Field: Earth and Planetary Sciences (Physical Sciences)

Research Article| January 01, 1999 Evidence from correlated Ir/Os and Cu/S for late-stage Os mobility in peridotite xenoliths: Implications for Re-Os systematics Monica R. Handler; Monica R. Handler 1Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia Search for other works by this author on: GSW Google Scholar Victoria C. Bennett; Victoria C. Bennett 1Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia Search for other works by this author on: GSW Google Scholar Gerlind Dreibus Gerlind Dreibus 2Max-Planck-Institut für Chemie, Postfach 3060, D-55020 Mainz, Germany Search for other works by this author on: GSW Google Scholar Author and Article Information Monica R. Handler 1Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia Victoria C. Bennett 1Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia Gerlind Dreibus 2Max-Planck-Institut für Chemie, Postfach 3060, D-55020 Mainz, Germany Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (1): 75–78. https://doi.org/10.1130/0091-7613(1999)027<0075:EFCIOA>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 Email Permissions Search Site Citation Monica R. Handler, Victoria C. Bennett, Gerlind Dreibus; Evidence from correlated Ir/Os and Cu/S for late-stage Os mobility in peridotite xenoliths: Implications for Re-Os systematics. Geology 1999;; 27 (1): 75–78. doi: https://doi.org/10.1130/0091-7613(1999)027<0075:EFCIOA>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 Combined Ir, Os, Cu, and S concentrations from 18 eastern Australian peridotite xenoliths demonstrate systematic variations in Os concentrations with S loss and require a late-stage process capable of fractionating Os from the geochemically similar Ir. This effect accounts for the greater variability and lower mean Os concentrations observed in peridotite xenoliths as compared with massif peridotites and abyssal peridotites. Late-stage mobility of Os in xenoliths has important implications for interpreting Os isotopic data, and strong correlations between Cu/S and Ir/Os may provide a method for screening Re-Os data to provide more reliable Os isotopic model ages. The ability of cryptic secondary processes to fractionate some platinum-group elements (PGEs), in this case Ir and Os, must be taken into account before attributing fractionated PGE patterns in xenoliths to primary mantle processes. 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.