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Proterozoic onset of crustal reworking and collisional tectonics : reappraisal of the zircon oxygen isotope record
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dc.contributor.author | Spencer, C.J. | |
dc.contributor.author | Cawood, P.A. | |
dc.contributor.author | Hawkesworth, C.J. | |
dc.contributor.author | Raub, T.D. | |
dc.contributor.author | Prave, A.R. | |
dc.contributor.author | Roberts, N.M.W. | |
dc.date.accessioned | 2014-11-01T00:01:34Z | |
dc.date.available | 2014-11-01T00:01:34Z | |
dc.date.issued | 2014-05-01 | |
dc.identifier.citation | Spencer , C J , Cawood , P A , Hawkesworth , C J , Raub , T D , Prave , A R & Roberts , N M W 2014 , ' Proterozoic onset of crustal reworking and collisional tectonics : reappraisal of the zircon oxygen isotope record ' , Geology , vol. 42 , no. 5 , pp. 451-454 . https://doi.org/10.1130/G35363.1 | en |
dc.identifier.issn | 0091-7613 | |
dc.identifier.other | PURE: 138815077 | |
dc.identifier.other | PURE UUID: e0f953ea-08b4-4fcd-aa38-03c1d311eca8 | |
dc.identifier.other | Scopus: 84898887506 | |
dc.identifier.other | WOS: 000339960700024 | |
dc.identifier.other | ORCID: /0000-0002-4614-3774/work/64033677 | |
dc.identifier.other | ORCID: /0000-0003-4513-2245/work/84315165 | |
dc.identifier.uri | https://hdl.handle.net/10023/5659 | |
dc.description | Funding: University of St Andrews and Natural Environment Research Council. | en |
dc.description.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. | |
dc.format.extent | 4 | |
dc.language.iso | eng | |
dc.relation.ispartof | Geology | en |
dc.rights | © 2014. Geological Society of America This is an Accepted Manuscript of an article published in the Geology May 2014, available online: http://dx.doi.org/10.1130/G35363.1 | en |
dc.subject | GE Environmental Sciences | en |
dc.subject | BDC | en |
dc.subject | R2C | en |
dc.subject.lcc | GE | en |
dc.title | Proterozoic onset of crustal reworking and collisional tectonics : reappraisal of the zircon oxygen isotope record | en |
dc.type | Journal article | en |
dc.contributor.sponsor | NERC | en |
dc.description.version | Postprint | en |
dc.contributor.institution | University of St Andrews. Earth and Environmental Sciences | en |
dc.contributor.institution | University of St Andrews. School of Earth & Environmental Sciences | en |
dc.contributor.institution | University of St Andrews. Scottish Oceans Institute | en |
dc.contributor.institution | University of St Andrews. St Andrews Isotope Geochemistry | en |
dc.contributor.institution | University of St Andrews. Office of the Principal | en |
dc.contributor.institution | University of St Andrews. Marine Alliance for Science & Technology Scotland | en |
dc.contributor.institution | University of St Andrews. St Andrews Sustainability Institute | en |
dc.identifier.doi | https://doi.org/10.1130/G35363.1 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2014-11-01 | |
dc.identifier.grantnumber | NE/J021822/1 | en |
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