Cited by 135Origins and Evolution of LifeGeochemistry and Elemental AnalysisCO2 Sequestration and Geologic Interactions

Formation of H2 and CH4by weathering of olivine at temperatures between 30 and 70°C

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Neubeck, Anna, Duc, Nguyen Thanh, Bastviken, David, Crill, Patrick, Holm, Nils G·2011·Geochemical Transactions

Abstract

Hydrocarbons such as CH4 are known to be formed through the Fischer-Tropsch or Sabatier type reactions in hydrothermal systems usually at temperatures above 100°C. Weathering of olivine is sometimes suggested to account for abiotic formation of CH4 through its redox lowering and water splitting properties. Knowledge about the CH4 and H2 formation processes at low temperatures is important for the research about the origin and cause of early Earth and Martian CH4 and for CO2 sequestration. We have conducted a series of low temperature, long-term weathering experiments in which we have tested the CH4 and H2 formation potential of forsteritic olivine.The results show low temperature CH4 production that is probably influenced by chromite and magnetite as catalysts. Extensive analyses of a potential CH4 source trapped in the crystal structure of the olivine showed no signs of incorporated CH4. Also, the available sources of organic carbon were not enough to support the total amount of CH4 detected in our experiments. There was also a linear relationship between silica release into solution and the net CH4 accumulation into the incubation bottle headspaces suggesting that CH4 formation under these conditions could be a qualitative indicator of olivine dissolution.It is likely that minerals such as magnetite, chromite and other metal-rich minerals found on the olivine surface catalyze the formation of CH4, because of the low temperature of the system. This may expand the range of environments plausible for abiotic CH4 formation both on Earth and on other terrestrial bodies.

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  • High experimental methane production has been reported, but similar experiments with 13C-labeled carbon have shown that the methane produced is derived from background organic carbon contamination.

    “High experimental methane production has been reported (51, 52), but similar experiments with 13C-labeled carbon have shown that the methane produced is derived from background organic carbon contamination (53, 54).”

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  1. Horita J, Berndt ME: Abiogenic Methane Formation and Isotopic Fractionation Under Hydrothermal Conditions. Science. 1999, 285: 1055-1057. 10.1126/science.285.5430.1055. · DOI · Paper page

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Authors
Neubeck, A., Duc, N. T., Bastviken, D., Crill, P., & Holm, N. G.
Affiliations
  • Stockholm University (SE)
  • Linköping University (SE)
Corresponding author
Neubeck, Anna
Venue
Geochemical Transactions
Published
2011-06-27
Volume
12
Issue
1
Pages
6-6
ISSN
1467-4866 (ISSN-L)
OpenAlex
W2169148758
Cited by
135
References
43
Citations by year
2026: 20 · 2025: 14 · 2024: 5 · 2023: 9 · 2022: 6 · 2021: 7 · 2020: 9 · 2019: 8 · 2018: 7 · 2017: 4 · 2016: 12 · 2015: 8 · 2014: 8 · 2013: 10 · 2012: 6
FWCI
4.24
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Geochemical Transactions (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DiVA (Linkoping University) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Vetenskapsrådet (621-2008-2712)
  • Umeå Universitet
  • Stockholms Universitet
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
Keywords
olivine weathering, methane production, hydrogen formation, abiotic methane, forsterite, silica release, hydrothermal systems, Martian methane, CO2 sequestration, Fischer-Tropsch synthesis, CO2 methanation, water splitting

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