The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.
Abiogenic Methane Formation and Isotopic Fractionation Under Hydrothermal Conditions
Abstract
Recently, methane (CH 4 ) of possible abiogenic origin has been reported from many localities within Earth's crust. However, little is known about the mechanisms of abiogenic methane formation, or about isotopic fractionation during such processes. Here, a hydrothermally formed nickel-iron alloy was shown to catalyze the otherwise prohibitively slow formation of abiogenic CH 4 from dissolved bicarbonate (HCO 3 − ) under hydrothermal conditions. Isotopic fractionation by the catalyst resulted in δ 13 C values of the CH 4 formed that are as low as those typically observed for microbial methane, with similarly high CH 4 /(C 2 H 6 + C 3 H 8 ) ratios. These results, combined with the increasing recognition of nickel-iron alloy occurrence in oceanic crusts, suggest that abiogenic methane may be more widespread than previously thought.
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In the citing paper
“However distinguishing biotic and abiotic methane by carbon isotope fractionation is not always straightforward (Horita and Berndt, 1999)”
From Serpentinization as the source of energy, electrons, organics, catalysts, nutrients and pH gradients for the origin of LUCA and life (2023) · cites this paper as Horita and Berndt, 1999
In the citing paper
“Similarly, the presence of Fe-Ni catalysts enables CH4 production (55), but most of Earth’s crust is not sufficiently reducing to have such catalysts (41).”
From Disequilibrium biosignatures over Earth history and implications for detecting exoplanet life (2018) · cites this paper as [55]
Citations
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Peters, K. E., Walters, C. C., & Moldowan, J. M. (2004) · Cambridge University Press eBooks · doi:10.1017/cbo9780511524868 · Cited by 2,400
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Metadata
- Authors
- Horita, J., & Berndt, M. E.
- Affiliations
- Oak Ridge National Laboratory (US)
- University of Minnesota (US)
- Corresponding author
- Horita, Juske
- Venue
- Science
- Published
- 1999-08-13
- Volume
- 285
- Issue
- 5430
- Pages
- 1055-1057
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1998919748
- Cited by
- 590
- References
- 42
- Citations by year
- 2026: 19 · 2025: 21 · 2024: 19 · 2023: 21 · 2022: 24 · 2021: 24 · 2020: 25 · 2019: 29 · 2018: 38 · 2017: 21 · 2016: 23 · 2015: 30 · 2014: 23 · 2013: 34 · 2012: 21
- FWCI
- 5.23
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Methane Hydrates and Related Phenomena
- Physical Sciences › Earth and Planetary Sciences › Geology › Hydrocarbon exploration and reservoir analysis
- Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
- Keywords
- hydrothermal conditions, bicarbonate, dissolved carbon, carbon-13, oceanic crust
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