New evidence for ~4.45Ga terrestrial crust from zircon xenocrysts in Ordovician ignimbrite in the North Qinling Orogenic Belt, China

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New evidence for ~4.45Ga terrestrial crust from zircon xenocrysts in Ordovician ignimbrite in the North Qinling Orogenic Belt, China

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...

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Bibliographic Details
Main Authors:	Diwu, C., Sun, Y., Wilde, Simon, Wang, H., Dong, Z., Zhang, H., Wang, Q.
Format:	Journal Article
Published:	Elsevier Science BV 2013
Subjects:	Hadean Ancient crustal recycling Zircon Hf model ages Early Earth
Online Access:	http://hdl.handle.net/20.500.11937/24679

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