Unravelling the protracted U-Pb zircon geochronological record of high to ultrahigh temperature metamorphic rocks: Implications for provenance investigations

Mahyra Tedeschi,Pedro Leonardo Rossi Vieira,Matheus Kuchenbecker,Bruno V. Ribeiro,Vitor Barrote,Humberto Reis,Laura Stutenbecker,Cristiano Lana,Antonio Pedrosa-Soares,Ivo Dussin

Geoscience Frontiers（2022）

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摘要

•Metamorphism >850 °C can produce protracted concordant U-Pb zircon records.•Concordant U-Pb zircon age spectrum of a metaigneous source may span up to 700 Myr.•Potential effects of protracted zircon record on provenance studies are investigated.•HT-UHT may induce misleading modes in the detrital zircon record.•Inferred depositional ages, sources and tectonic settings can be misinterpreted.

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关键词

Detrital zircon,Protracted zircon record,Sedimentary basins,UHT metamorphism,Prolonged metamorphism,Bias in detrital zircon

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