Desequilibrio del ciclo del azufre y cambio ambiental durante el Período Ediacárico

G. A. Shields; B. J.W. Mills

doi:10.3989/egeol.43605.569

Authors

G. A. Shields Department of Earth Sciences, University College London https://orcid.org/0000-0002-7828-3966
B. J.W. Mills School of Earth and Environment, University of Leeds https://orcid.org/0000-0002-9141-0931

DOI:

https://doi.org/10.3989/egeol.43605.569

Keywords:

Carbon isotopes, Sulfur isotopes, Biogeochemical balance, Ediacaran

Abstract

A different approach is proposed here to solve the problem of negative δ¹³C excursions during the Ediacaran, by viewing them in terms of a linked carbon-sulfur-oxygen system, whereby changes in oxidant dynamics caused an excess of organic carbon oxidation over burial, resulting in a smaller DOM reservoir. The amount of oxidant required to achieve a deep negative carbon isotope excursion through net organic carbon oxidation may reasonably result from basin-scale evaporite dissolution.

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References

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