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- W2081736250 abstract "Research Article| May 01, 2014 Proterozoic onset of crustal reworking and collisional tectonics: Reappraisal of the zircon oxygen isotope record Christopher J. Spencer; Christopher J. Spencer * 1Department of Earth and Environmental Sciences, University of St Andrews, St Andrews KY16 9AL, UK *Current address: NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottingham NG12 5GG, UK; E-mail: spenchristoph@gmail.com. Search for other works by this author on: GSW Google Scholar Peter A. Cawood; Peter A. Cawood 1Department of Earth and Environmental Sciences, University of St Andrews, St Andrews KY16 9AL, UK Search for other works by this author on: GSW Google Scholar Chris J. Hawkesworth; Chris J. Hawkesworth 1Department of Earth and Environmental Sciences, University of St Andrews, St Andrews KY16 9AL, UK Search for other works by this author on: GSW Google Scholar Timothy D. Raub; Timothy D. Raub 1Department of Earth and Environmental Sciences, University of St Andrews, St Andrews KY16 9AL, UK Search for other works by this author on: GSW Google Scholar Anthony R. Prave; Anthony R. Prave 1Department of Earth and Environmental Sciences, University of St Andrews, St Andrews KY16 9AL, UK Search for other works by this author on: GSW Google Scholar Nick M.W. Roberts Nick M.W. Roberts 2NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottingham NG12 5GG, UK Search for other works by this author on: GSW Google Scholar Geology (2014) 42 (5): 451–454. https://doi.org/10.1130/G35363.1 Article history received: 09 Dec 2013 rev-recd: 27 Feb 2014 accepted: 28 Feb 2014 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Christopher J. Spencer, Peter A. Cawood, Chris J. Hawkesworth, Timothy D. Raub, Anthony R. Prave, Nick M.W. Roberts; Proterozoic onset of crustal reworking and collisional tectonics: Reappraisal of the zircon oxygen isotope record. Geology 2014;; 42 (5): 451–454. doi: https://doi.org/10.1130/G35363.1 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 A global U-Pb and δ18O zircon database shows temporal changes in the magmatic record related to changes in the degree of crustal reworking. The δ18O composition of bulk sediment remains relatively constant through geologic time, with a mean value of 14.9‰. In contrast, the δ18O values in magmatic zircons vary from relatively low values averaging ∼6‰ in the Archean to increasingly higher and scattered values defining a series of peaks and troughs in post-Archean data. The degree of crustal reworking increases at times of supercontinent assembly. Therefore we attribute the pattern of post-Archean δ18O values recorded by magmatic zircons to a significant increase in the incorporation of high δ18O sediment in response to enhanced crustal thickening and reworking associated with the onset of collisional tectonics, especially during formation of supercontinents. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2081736250 title "Proterozoic onset of crustal reworking and collisional tectonics: Reappraisal of the zircon oxygen isotope record" @default.
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