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- W2023355473 abstract "The global Late Ediacaran Shuram–Wonoka carbon isotope anomaly has been regarded as the largest and longest known isotopic anomaly in the ocean, assuming that all Ediacaran carbonate is marine. Disregarding carbonate in South Australia shown here to be palaeosol or palaeokarst, the synchronous marine organic–carbonate excursion is only −8‰ for δ 13 C organic and −6‰ for δ 13 C carbonate, and lasted less than a million years. This revised magnitude and duration is comparable with perturbations across the Permian–Triassic boundary, and correlative with a global Late Ediacaran acritarch mass extinction. Like Permian–Triassic isotopic excursions, the revised organic–carbonate Wonoka excursion may also have been a greenhouse palaeoclimatic warm spike, which terminated valley incision and glacioeustatic drawdown during the mid-Ediacaran Fauquier Glaciation, and preceded chill of the Late Ediacaran Billy Springs Glaciation. Supplementary material: Measured sections and tables of mineral and grain-size proportions, major element and stable isotope analyses are available at www.geolsoc.org.uk/SUP18756." @default.
- W2023355473 created "2016-06-24" @default.
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- W2023355473 date "2014-07-07" @default.
- W2023355473 modified "2023-10-15" @default.
- W2023355473 title "Revised Wonoka isotopic anomaly in South Australia and Late Ediacaran mass extinction" @default.
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- W2023355473 doi "https://doi.org/10.1144/jgs2014-016" @default.
- W2023355473 hasPublicationYear "2014" @default.
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