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dc.contributor.authorGardiner, N. J.
dc.contributor.authorMaidment, D. W.
dc.contributor.authorKirkland, C. L.
dc.contributor.authorBodorkos, S.
dc.contributor.authorSmithies, R. H.
dc.contributor.authorJeon, H.
dc.date.accessioned2019-09-17T10:30:01Z
dc.date.available2019-09-17T10:30:01Z
dc.date.issued2018-08
dc.identifier261213652
dc.identifier9934bb15-388c-4684-963c-767f320dfe55
dc.identifier85047227628
dc.identifier.citationGardiner , N J , Maidment , D W , Kirkland , C L , Bodorkos , S , Smithies , R H & Jeon , H 2018 , ' Isotopic insight into the Proterozoic crustal evolution of the Rudall Province, Western Australia ' , Precambrian Research , vol. 313 , pp. 31-50 . https://doi.org/10.1016/j.precamres.2018.05.003en
dc.identifier.issn0301-9268
dc.identifier.otherORCID: /0000-0003-3465-9295/work/62311907
dc.identifier.urihttps://hdl.handle.net/10023/18483
dc.descriptionNJG acknowledges Curtin University for financial support.en
dc.description.abstractThe Proterozoic assembly of Australia involved the convergence of three main Archean cratonic entities: the North, West and South Australian Cratons, and is recorded in the Proterozoic orogenic belts surrounding these continental nuclei. The Rudall Province of northern Western Australia is the sole exposure of a Paleo- to Mesoproterozoic orogen lying between the North and West Australian Cratons, and may record the effects of their amalgamation. We present new zircon O, U–Pb and Lu–Hf isotope data from magmatic rocks across the Rudall Province, to which we add existing isotope data to yield a crustal evolution overview. Hf evolution trends for the ca. 1804–1762 Ma Kalkan Supersuite, the ca. 1589–1549 Ma Krackatinny Supersuite and the ca. 1310–1286 Ma Camel Suite, indicate a significant input of Archean East Pilbara Basement material, albeit as a mix with more juvenile material, including a possible ca. 1900 Ma component. Zircon δ18O data suggest a contribution from supracrustal material into the magmatic source of the Kalkan Supersuite, which may have been emplaced in an extensional setting. In contrast, the Krackatinny Supersuite and Camel Suite have mantle-like δ18O which may reflect partial melting of deeper Archean sources. Geochemical data for the Krackatinny Supersuite shows geochemical trends implying that melting of thickened mafic crust progressed from deeper to shallower levels, possibly in a rift setting. Camel Suite K-rich leucogranites may also have been emplaced in an extensional setting towards the end of high-P metamorphism. All terranes of the Rudall Province are para-autochthonous with respect to the Pilbara Craton, with no requirement for arc-related magmatism. We outline two potential scenarios for the Paleo- to Mesoproterozoic geodynamic evolution of the Rudall Province: an early cratonic amalgamation between the West and North Australian Cratons ca. 1680 Ma followed by Mesoproterozoic intraplate events; or a later assembly ca. 1377–1275 Ma. We lean towards this later amalgamation scenario.
dc.format.extent20
dc.format.extent1761453
dc.language.isoeng
dc.relation.ispartofPrecambrian Researchen
dc.subjectNorth Australian Cratonen
dc.subjectPilbaraen
dc.subjectProterozoic belten
dc.subjectWest Australian Cratonen
dc.subjectZircon Hf O isotopesen
dc.subjectQE Geologyen
dc.subjectGeologyen
dc.subjectGeochemistry and Petrologyen
dc.subjectT-DASen
dc.subject.lccQEen
dc.titleIsotopic insight into the Proterozoic crustal evolution of the Rudall Province, Western Australiaen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.identifier.doi10.1016/j.precamres.2018.05.003
dc.description.statusPeer revieweden


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