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April 1, 2026Bulletin of Mineralogy Petrology and Geochemistry

Geochemistry and Geological Implications of the Black Shale from the Ediacaran Doushantuo Formation in the Eastern Yangtze Gorges Area

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Key Points

This research aims to reconstruct the vertical evolution of redox environments and organic matter enrichment mechanisms in black shale.
Analyzed major, trace, and rare earth elements from the black shale
Utilized U-Mo covariance analysis and multi-indicator provenance discrimination
Employed chemical weathering index (CIA)
Average ∑REE of Doushantuo black shale is 77.14 μg/g, significantly lower than PAAS
Ce anomaly values ranged from 0.45 to 0.95, indicating redox conditions
The vertical evolution displayed a trend from anoxic to sulfidic, and then to weakened reduction, peaking in the middle layers.

Implication

Research uncovers redox evolution in black shale from the Doushantuo Formation, suggesting geological implications for gas exploration.

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Cite This Study

Guotao Zhang (2026) studied this question.

synapsesocial.com/papers/6a095b1b7880e6d24efe0dad https://doi.org/10.3724/j.issn.1007-2802.20260114

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