Universität zu Köln

Friese, Andre ORCID: 0000-0003-4139-9874, Bauer, Kohen, Glombitza, Clemens, Ordonez, Luis, Ariztegui, Daniel ORCID: 0000-0001-7775-5127, Heuer, Verena B., Vuillemin, Aurele, Henny, Cynthia, Nomosatryo, Sulung, Simister, Rachel, Wagner, Dirk ORCID: 0000-0001-5064-497X, Bijaksana, Satria, Vogel, Hendrik ORCID: 0000-0002-9902-8120, Melles, Martin ORCID: 0000-0003-0977-9463, Russell, James M., Crowe, Sean A. and Kallmeyer, Jens (2021). Organic matter mineralization in modern and ancient ferruginous sediments. Nat. Commun., 12 (1). BERLIN: NATURE RESEARCH. ISSN 2041-1723

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Abstract

Deposition of ferruginous sediment was widespread during the Archaean and Proterozoic Eons, playing an important role in global biogeochemical cycling. Knowledge of organic matter mineralization in such sediment, however, remains mostly conceptual, as modern ferruginous analogs are largely unstudied. Here we show that in sediment of ferruginous Lake Towuti, Indonesia, methanogenesis dominates organic matter mineralization despite highly abundant reactive ferric iron phases like goethite that persist throughout the sediment. Ferric iron can thus be buried over geologic timescales even in the presence of labile organic carbon. Coexistence of ferric iron with millimolar concentrations of methane further demonstrates lack of iron-dependent methane oxidation. With negligible methane oxidation, methane diffuses from the sediment into overlying waters where it can be oxidized with oxygen or escape to the atmosphere. In low-oxygen ferruginous Archaean and Proterozoic oceans, therefore, sedimentary methane production was likely favored with strong potential to influence Earth's early climate. The conditions that shaped Earth's evolution during the Archaean and Proterozoic Eons remain unknown. Using Lake Towuti in Indonesia as an analog of early oceans the authors find that microbial methanogenesis exerts a strong influence with important implications for the composition of Earth's early atmosphere.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Friese, Andre UNSPECIFIED orcid.org/0000-0003-4139-9874 UNSPECIFIED Bauer, Kohen UNSPECIFIED UNSPECIFIED UNSPECIFIED Glombitza, Clemens UNSPECIFIED UNSPECIFIED UNSPECIFIED Ordonez, Luis UNSPECIFIED UNSPECIFIED UNSPECIFIED Ariztegui, Daniel UNSPECIFIED orcid.org/0000-0001-7775-5127 UNSPECIFIED Heuer, Verena B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vuillemin, Aurele UNSPECIFIED UNSPECIFIED UNSPECIFIED Henny, Cynthia UNSPECIFIED UNSPECIFIED UNSPECIFIED Nomosatryo, Sulung UNSPECIFIED UNSPECIFIED UNSPECIFIED Simister, Rachel UNSPECIFIED UNSPECIFIED UNSPECIFIED Wagner, Dirk UNSPECIFIED orcid.org/0000-0001-5064-497X UNSPECIFIED Bijaksana, Satria UNSPECIFIED UNSPECIFIED UNSPECIFIED Vogel, Hendrik UNSPECIFIED orcid.org/0000-0002-9902-8120 UNSPECIFIED Melles, Martin UNSPECIFIED orcid.org/0000-0003-0977-9463 UNSPECIFIED Russell, James M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Crowe, Sean A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kallmeyer, Jens UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-602635
DOI:	10.1038/s41467-021-22453-0
Journal or Publication Title:	Nat. Commun.
Volume:	12
Number:	1
Date:	2021
Publisher:	NATURE RESEARCH
Place of Publication:	BERLIN
ISSN:	2041-1723
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/60263