Carbon cycle perturbation expressed in terrestrial Permian-Triassic boundary sections in South China

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• 作者：Ying Cui^a ; ^{cuiying00@gmail.com} ; Antoine Bercovici^b ; ^c ; Jianxin Yu^d ; Lee R. Kump^a ; Katherine H. Freeman^a ; Shangguo Su^e ; Vivi Vajda^b ; ^f
• 关键词：Carbon isotopes ; Organic matter ; Permian&ndash ; Triassic boundary ; South China ; Mass extinction
• 刊名：Global and Planetary Change
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：148
• 期：Complete
• 页码：272-285
• 全文大小：2430 K
• 卷排序：148

文摘

We find − 2.6‰ carbon isotope shift across the Permian–Triassic boundary on land. The shift shows persistent geographic patterns despite the absolute value differs. We use an isotopic mixing model to interpret these records. We find the carbon isotope shift is dominated by the atmospheric δ13C signal. Different absolute δ13C is due to local amplifications and damping of the signal.