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Guang-Ying Ren

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Articles

Earth system instability explains redox paradox during late Cambrian SPICE event

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By Hannes Kehm, Soheil Radfar, Zi-heng Li, Lucia Coppo, Yi-Bo Lin, Zhong-Qiang Chen, Timothy M. Lenton, Shu-Zhong Shen, Feifei Zhang, Jian-Lin Zhou, Guo-Lin Xiong, Guang-Ying Ren
| Science Magazine Verified
Abstract The late Neoproterozoic–early Paleozoic (~600 to 520 million years ago) witnessed a fundamental shift under atmosphere-ocean redox conditions, where pulsed ocean oxygenation events (OOEs) were replaced by episodic ocean anoxic events (OAEs). The Cambrian Steptoean positive carbon isotope excursion (SPICE) event (494.5 to 492.5 million years ago) represents a major early Paleozoic OAE, yet its drivers and underlying dynamics remain controversial.
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