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Frasnian-Famennian boundary successions (Upper Devonian) of different depositional settings and correlation in South China: Multiple stratigraphic approaches
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DOI：10.1016/j.earscirev.2026.105627.png)
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Abstract
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• Frasnian-Famennian boundary (FFB) successions deposited in different environmental settings from South China were constrained by multiple stratigraphic approaches. • FFB successions of different settings cover three third-order sequences (Sfr0, Sfr and Sfa), two principal positive carbon isotope excursions (CIE) and two episodes of mass extinction. • The onset of the first CIE coincides with and first faunal kill line, marking the base of late highstand systems tract of Sfr0. • The onset of the second CIE coincides with the final extinction line and FFB, and is fixed at the mid-upper level of the basal cycle set of Sfa.
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