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Brief Communications Arising
Nature 444, E18-E19 (14 December 2006) | doi:10.1038/nature05500; Published online 13 December 2006
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Faculty Positions in Cancer, Cardiovascular and Metabolic Diseases, Immunology
- Institute de Recherches Cliniques de Montreal
- Montreal, Quebec, Canada
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Geochemistry: Biosignatures and abiotic constraints on early life (Reply)
Yuichiro Ueno1,2,5, Keita Yamada4,5, Naohiro Yoshida1,3,4,5, Shigenori Maruyama1,2 & Yukio Isozaki6
Abstract
Replying to Sherwood Lollar and McCollom
Sherwood Lollar and McCollom1 suggest that abiotic reactions, in particular those catalysed by Fe–Ni alloys, might be responsible for the methane recorded in our fluid inclusions2. They point out that 13C in methane that is produced abiotically can be substantially depleted under field and laboratory conditions. However, native metal catalysis would not only have been implausible in the sulphidic environment of the basalt-hosted Dresser hydrothermal system, but it would also have been inconsistent with the isotopic fractionation between CH4 and CO2 that we note in the primary fluid2.
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RESEARCH
Geochemistry Biosignatures and abiotic constraints on early lifeNature Brief Communication (14 Dec 2006)
Evidence from fluid inclusions for microbial methanogenesis in the early Archaean eraNature Letters to Editor (23 Mar 2006)
Abiogenic formation of alkanes in the Earth's crust as a minor source for global hydrocarbon reservoirsNature Letters to Editor (04 Apr 2002)
A light carbon reservoir recorded in zircon-hosted diamond from the Jack HillsNature Letters to Editor (03 Jul 2008)
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