New Re-Os Geochronological Data from the Upper Doushantuo Formation: Age Constraint on the Shuram Excursion and Implication for the Ediacaran Fluctuated Continental Weathering.

Zhaozhao Tan, Jianlan Luo, Xuesheng Xu, Wanglu Jia, Jie Li, Liran Chen

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Article in ACS omega, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Zhaozhao TanHunan Provincial Key Laboratory of Geochemical Processes and Resource Environmental Effects, Changsha, Hunan 410014, China.ORCID https://orcid.org/0000-0002-4022-0433

Jianlan LuoHunan Provincial Key Laboratory of Geochemical Processes and Resource Environmental Effects, Changsha, Hunan 410014, China.

Xuesheng XuHunan Provincial Key Laboratory of Geochemical Processes and Resource Environmental Effects, Changsha, Hunan 410014, China.

Wanglu JiaState Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.ORCID https://orcid.org/0000-0003-1715-4279

Jie LiState Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.

Liran ChenHunan Provincial Key Laboratory of Geochemical Processes and Resource Environmental Effects, Changsha, Hunan 410014, China.

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No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The largest negative carbon-isotope excursion in geological history has been reported by several studies of the upper Doushantuo Formation of South China, which has been correlated to the middle Ediacaran-Shuram excursion (SE). Due to a scarcity of radiometric age constraints on the excursion in South China, however, global correlations and comparisons of this event remain a debate. Here, we present Re-Os and carbon isotope data on organic-rich sediments obtained from a drill-core sample in the Chengkou area, the northeastern margin of the Yangtze Platform, and South China. The Re-Os geochronology yields a depositional age of 568 ± 15 Ma (Model 3, MSWD = 1.9,

Identifiers

PMID39713679

DOI10.1021/acsomega.4c05072

PMCPMC11656371

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