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Pathways for abiotic organic synthesis at submarine hydrothermal fields

Open access
McDermott, Jill M., Seewald, Jeffrey S., German, Christopher R., Sylva, Sean P.·2015·Proceedings of the National Academy of Sciences
DOI 10.1073/pnas.1506295112
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Abstract

Significance: Arguments for an abiotic origin of organic compounds in deep-sea hot springs are compelling because of their potential role in the origin of life and sustaining microbial communities. Theory predicts that warm H 2 -rich fluids circulating through serpentinizing systems create a favorable thermodynamic drive for inorganic carbon reduction to organic compounds. We show that abiotic synthesis proceeds by two spatially and temporally distinct mechanisms. Abundant dissolved CH 4 and higher hydrocarbons are likely formed in H 2 -rich fluid inclusions over geologic timescales. Conversely, formate production by ΣCO 2 reduction occurs rapidly during subsurface mixing, which may support anaerobic methanogenesis. We confirm models for abiotic metastable organic compound formation and argue that alkanes in all ultramafic-influenced vents may form independently of actively circulating serpentinizing fluids.

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Metadata

Authors
McDermott, J. M., Seewald, J. S., German, C. R., & Sylva, S. P.
Venue
Proceedings of the National Academy of Sciences
Publisher
Proceedings of the National Academy of Sciences
Published
2015-06-08
Volume
112
Issue
25
Pages
7668-7672
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
DOI
10.1073/pnas.1506295112
OpenAlex
W1607885691
Cited by
340
References
5
FWCI
17.56
Type
journal article
Language
en
Open access
green
Licence
www.pnas.org/site/misc/userlicense.xhtml (vor)
Funders
  • National Aeronautics and Space Administration (NNX-327 09AB75G)
  • National Science Foundation (OCE-1061863)

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CoChat. (2026). Citation check: Pathways for abiotic organic synthesis at submarine hydrothermal fields. https://app.cochat.ai/papers/10.1073/pnas.1506295112
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McDermott, J. M., Seewald, J. S., German, C. R., & Sylva, S. P. (2015). Pathways for abiotic organic synthesis at submarine hydrothermal fields. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1506295112

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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