A transient swing to higher oxygen levels in the atmosphere and oceans at ~1.4 Ga

Wei Wei,Robert Frei,Robert Klaebe,Dongjie Tang,Guang-Yi Wei,Da Li,Lan-Lan Tian,Fang Huang,Hong-Fei Ling

Precambrian Research（2021）

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摘要

•REEs in the Tieling carbonates imply an oxygenation in shallow waters at ~1.44 Ga.•Oxidative weathering transiently fractionated Cr isotopes in the Tieling carbonates.•Integrated evidence shows higher pO2 at the Earth surface at ~1.4 Ga.

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关键词

REY,Cr isotopes,North china platform,Mid-proterozoic,Oxygenation

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