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Microbial Fossils i...
Microbial Fossils in the 2.63 Ga Jeerinah Formation, Western Australia-Evidence of Microbial Oxidation
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- Hallberg, Rolf O. (författare)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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- Broman, Curt (författare)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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(creator_code:org_t)
- 2018-01-29
- 2018
- Engelska.
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Ingår i: Geomicrobiology Journal. - : Informa UK Limited. - 0149-0451 .- 1521-0529. ; 35:4, s. 255-260
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A diamond drill core from the upper part of the Jeerinah Formation (similar to 2.63 Ga), underlying the Hamersley Group, deposited at a time when the oxygen concentrations in the marine environment were extremely low, was examined for microbial fossils. The paper presents organo-mineral structures in the form of twisted stalks produced by bacteria being present in the laminated black carbonaceous shale sediments. These twisted stalks are organo-mineral structures produced by microaerophilic Fe(II)-oxidizing-type bacteria such as Gallionella and/or Mariprofundus that are active at very low-oxygen concentrations, thus providing evidence for oxygen being present in the marine environment at 2.63 Ga.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Banded iron formations
- Gallionella
- Mariprofundus
- microbial fossil
- oxygen evolution
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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