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dc.contributor.authorDiwu, C.
dc.contributor.authorSun, Y.
dc.contributor.authorWilde, Simon
dc.contributor.authorWang, H.
dc.contributor.authorDong, Z.
dc.contributor.authorZhang, H.
dc.contributor.authorWang, Q.
dc.date.accessioned2017-01-30T12:44:27Z
dc.date.available2017-01-30T12:44:27Z
dc.date.created2014-03-11T20:00:54Z
dc.date.issued2013
dc.identifier.citationDiwu, Chunrong and Sun, Yong and Wilde, Simon A. and Wang, Hongliang and Dong, Zengchan and Zhang, Hong and Wang, Qian. 2013. New evidence for ~4.45Ga terrestrial crust from zircon xenocrysts in Ordovician ignimbrite in the North Qinling Orogenic Belt, China. Gondwana Research. 23 (4): pp. 1484-1490.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/24679
dc.identifier.doi10.1016/j.gr.2013.01.001
dc.description.abstract

Evidence for the earliest known terrestrial crust comes predominantly from Jack Hills in Western Australia, where hafnium isotopic results from >3.8. Ga detrital zircons indicate crustal precursors as old as ~4.4-4.5. Ga. We present evidence from magmatic cores in >3.9. Ga xenocrystic zircons from a felsic volcanic rock in the North Qinling Orogenic Belt, China, of similar Hf crustal model ages up to 4.45 Ga. These lie on the same Lu/Hf trajectory as the least disturbed Jack Hills and Apollo 14 zircons, therefore providing only the second example of the earliest known generation of continental crust on Earth. In addition, the rims of two zircon grains record later growth at 3.7. Ga and, when combined with the fact that the grains are incorporated in Paleozoic volcanic rocks, imply long-lived crustal residence within the basement of the North China Craton. These results therefore establish the wider distribution and survival of the most ancient crustal material on the Earth and highlight the possibility for the further discovery of ancient crustal remnants.

dc.publisherElsevier Science BV
dc.subjectHadean
dc.subjectAncient crustal recycling
dc.subjectZircon Hf model ages
dc.subjectEarly Earth
dc.titleNew evidence for ~4.45Ga terrestrial crust from zircon xenocrysts in Ordovician ignimbrite in the North Qinling Orogenic Belt, China
dc.typeJournal Article
dcterms.source.volume23
dcterms.source.number4
dcterms.source.startPage1484
dcterms.source.endPage1490
dcterms.source.issn1342-937X
dcterms.source.titleGondwana Research
curtin.department
curtin.accessStatusFulltext not available


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