Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System

Target lithologies and post-impact hydrothermal mineral assemblages in a new 1.3 km deep core from the peak ring of the Chicxulub impact crater indicate sulfate reduction was a potential energy source for a microbial ecosystem (Kring et al., 2020). That sulfate was metabolized is confirmed here by m...

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Autores principales: Kring, David A., Whitehouse, Martin J., Schmieder, Martin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Mary Ann Liebert, Inc., publishers 2021
Materias:
Special Collection Articles
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7826424/
https://www.ncbi.nlm.nih.gov/pubmed/33124879
http://dx.doi.org/10.1089/ast.2020.2286
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author Kring, David A.
Whitehouse, Martin J.
Schmieder, Martin
author_facet Kring, David A.
Whitehouse, Martin J.
Schmieder, Martin
author_sort Kring, David A.
collection PubMed
description Target lithologies and post-impact hydrothermal mineral assemblages in a new 1.3 km deep core from the peak ring of the Chicxulub impact crater indicate sulfate reduction was a potential energy source for a microbial ecosystem (Kring et al., 2020). That sulfate was metabolized is confirmed here by microscopic pyrite framboids with δ(34)S values of -5 to -35 ‰ and ΔS(sulfate-sulfide) values between pyrite and source sulfate of 25 to 54 ‰, which are indicative of biologic fractionation rather than inorganic fractionation processes. These data indicate the Chicxulub impact crater and its hydrothermal system hosted a subsurface microbial community in porous permeable niches within the crater's peak ring.
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spelling pubmed-78264242021-01-25 Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System Kring, David A. Whitehouse, Martin J. Schmieder, Martin Astrobiology Special Collection Articles Target lithologies and post-impact hydrothermal mineral assemblages in a new 1.3 km deep core from the peak ring of the Chicxulub impact crater indicate sulfate reduction was a potential energy source for a microbial ecosystem (Kring et al., 2020). That sulfate was metabolized is confirmed here by microscopic pyrite framboids with δ(34)S values of -5 to -35 ‰ and ΔS(sulfate-sulfide) values between pyrite and source sulfate of 25 to 54 ‰, which are indicative of biologic fractionation rather than inorganic fractionation processes. These data indicate the Chicxulub impact crater and its hydrothermal system hosted a subsurface microbial community in porous permeable niches within the crater's peak ring. Mary Ann Liebert, Inc., publishers 2021-01-01 2021-01-05 /pmc/articles/PMC7826424/ /pubmed/33124879 http://dx.doi.org/10.1089/ast.2020.2286 Text en © David A. Kring et al., 2021; Published by Mary Ann Liebert, Inc. This Open Access article is distributed under the terms of the Creative Commons Attribution Noncommercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
spellingShingle Special Collection Articles
Kring, David A.
Whitehouse, Martin J.
Schmieder, Martin
Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System
title Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System
title_full Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System
title_fullStr Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System
title_full_unstemmed Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System
title_short Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System
title_sort microbial sulfur isotope fractionation in the chicxulub hydrothermal system
topic Special Collection Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7826424/
https://www.ncbi.nlm.nih.gov/pubmed/33124879
http://dx.doi.org/10.1089/ast.2020.2286
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AT schmiedermartin microbialsulfurisotopefractionationinthechicxulubhydrothermalsystem

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