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Sulfur cycle imbalance and environmental change during the Ediacaran Period = Desequilibrio del ciclo del azufre y cambio ambiental durante el Período Ediacárico

Shields, GA; Mills, BJW; (2019) Sulfur cycle imbalance and environmental change during the Ediacaran Period = Desequilibrio del ciclo del azufre y cambio ambiental durante el Período Ediacárico. Estudios Geológicos , 75 (2) , Article e114. 10.3989/egeol.43605.569. Green open access

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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. / Se propone aquí un enfoque diferente para resolver el problema de las excursiones quimioestratigráficas negativas durante el Ediacárico, considerándolas en términos de un sistema vinculado de carbono-sulfuro-oxígeno, en el que los cambios en la dinámica de los oxidantes causarían un exceso de oxidación de carbono orgánico sobre el enterramiento, lo que resultaría en un depósito menor de DOM. La cantidad de oxidante requerida para lograr una excursión isotópica de carbono negativa a través de la oxidación de carbono orgánico neto puede resultar razonablemente de la disolución de evaporitaa a escala de cuenca.

Type: Article
Title: Sulfur cycle imbalance and environmental change during the Ediacaran Period = Desequilibrio del ciclo del azufre y cambio ambiental durante el Período Ediacárico
Open access status: An open access version is available from UCL Discovery
DOI: 10.3989/egeol.43605.569
Publisher version: https://doi.org/10.3989/egeol.43605.569
Language: English
Additional information: Copyright © 2019 CSIC. This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial (by-nc) Spain 4.0 License.
Keywords: Carbon isotopes; Sulfur isotopes; Biogeochemical balance; Ediacaran; Isótopos de carbono; Isótopos de azufre; Balance biogeoquímico; Ediacárico
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/10087140
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