Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Timing and origin of natural gas accumulation in the Siljan impact structure, Sweden
Linnæus University, Sweden.
British Geological Survey, UK.
Georg-August University, Germany.
Swedish Museum of Natural History, Sweden.
Show others and affiliations
2019 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 10, no 1, article id 4736Article in journal (Refereed) Published
Abstract [en]

Fractured rocks of impact craters may be suitable hosts for deep microbial communities on Earth and potentially other terrestrial planets, yet direct evidence remains elusive. Here, we present a study of the largest crater of Europe, the Devonian Siljan structure, showing that impact structures can be important unexplored hosts for long-term deep microbial activity. Secondary carbonate minerals dated to 80 ± 5 to 22 ± 3 million years, and thus postdating the impact by more than 300 million years, have isotopic signatures revealing both microbial methanogenesis and anaerobic oxidation of methane in the bedrock. Hydrocarbons mobilized from matured shale source rocks were utilized by subsurface microorganisms, leading to accumulation of microbial methane mixed with a thermogenic and possibly a minor abiotic gas fraction beneath a sedimentary cap rock at the crater rim. These new insights into crater hosted gas accumulation and microbial activity have implications for understanding the astrobiological consequences of impacts. © 2019, The Author(s).

Place, publisher, year, edition, pages
Nature Publishing Group , 2019. Vol. 10, no 1, article id 4736
Keywords [en]
abiotic factor, anaerobic digestion, bedrock, cap rock, crater, Devonian, methane, methanogenesis, microbial activity, oxidation, shale, Dalarna, Siljan, Sweden
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40597DOI: 10.1038/s41467-019-12728-yScopus ID: 2-s2.0-85073546979OAI: oai:DiVA.org:ri-40597DiVA, id: diva2:1369613
Note

Funding details: Vetenskapsrådet, VR, 04129, 2017–05186, 2017–00766; Funding text 1: Thanks to AB Igrene for access to drill cores, drilling logs and gas data. Swedish research council (contract 2017–05186 to H.D., 2015–04129 to S.S., 2017–04129 to M.I.) and Formas (contract 2017–00766 to H.D. and M.W.) are thanked for financial support. K. Lindén, M. Tillberg, and M. Schmitt are thanked for analytical or sample preparation assistance, and University of Gothenburg for access to SEM. This is NordSIM publication 617 and Vegacenter publication 20.

Available from: 2019-11-12 Created: 2019-11-12 Last updated: 2019-11-12Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Siljeström, Sandra

Search in DiVA

By author/editor
Siljeström, Sandra
By organisation
Chemistry and Materials
In the same journal
Nature Communications
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 10 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.9