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Extreme C-13 deplet...
Extreme C-13 depletion of carbonates formed during oxidation of biogenic methane in fractured granite
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- Drake, Henrik (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Linnaeus University, Sweden
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- Åström, Mats E. (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Linnaeus University, Sweden
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- Heim, Christine (författare)
- Univ Göttingen, Germany,Georg-August University, Germany
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- Broman, Curt (författare)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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- Åstrom, Jan (författare)
- CSC-IT Center for Science, Finland
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- Whitehouse, Martin (författare)
- Naturhistoriska riksmuseet,Enheten för geovetenskap
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- Ivarsson, Magnus, 1975- (författare)
- Swedish Museum of Natural History, Sweden
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- Siljeström, Sandra (författare)
- RISE,SP Kemi Material och Ytor,SP Tech Res Inst Sweden
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- Sjövall, Peter (författare)
- RISE,SP – Sveriges Tekniska Forskningsinstitut,SP Tech Res Inst Sweden
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(creator_code:org_t)
- 2015-05-07
- 2015
- Engelska.
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Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 6
- Relaterad länk:
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https://doi.org/10.1...
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https://www.nature.c...
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https://ri.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Precipitation of exceptionally C-13-depleted authigenic carbonate is a result of, and thus a tracer for, sulphate-dependent anaerobic methane oxidation, particularly in marine sediments. Although these carbonates typically are less depleted in C-13 than in the source methane, because of incorporation of C also from other sources, they are far more depleted in C-13 (delta C-13 as light as - 69% V-PDB) than in carbonates formed where no methane is involved. Here we show that oxidation of biogenic methane in carbon-poor deep groundwater in fractured granitoid rocks has resulted in fracture-wall precipitation of the most extremely C-13-depleted carbonates ever reported, delta C-13 down to - 125% V-PDB. A microbial consortium of sulphate reducers and methane oxidizers has been involved, as revealed by biomarker signatures in the carbonates and S-isotope compositions of co-genetic sulphide. Methane formed at shallow depths has been oxidized at several hundred metres depth at the transition to a deep-seated sulphate-rich saline water. This process is so far an unrecognized terrestrial sink of methane.
Ämnesord
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Miljöbioteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Biotechnology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
Nyckelord
- Mikrobiologi
- Microbiology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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