气候变化领域集成服务门户(CCPortal): Magnetite biomineralization in ferruginous waters and early Earth evolution

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DOI	10.1016/j.epsl.2020.116495
	Magnetite biomineralization in ferruginous waters and early Earth evolution
	Bauer K.W.; Byrne J.M.; Kenward P.; Simister R.L.; Michiels C.C.; Friese A.; Vuillemin A.; Henny C.; Nomosatryo S.; Kallmeyer J.; Kappler A.; Smit M.A.; Francois R.; Crowe S.A.
发表日期	2020
ISSN	0012821X
卷号	549
英文摘要	Burial of large quantities of magnetite (Fe(II)Fe(III)2O4) in iron formations (IFs) likely contributed to the protracted oxidation of Earth's surface during the Precambrian Eons. Magnetite can form through a diversity of biological and abiotic pathways and its preservation in IFs may thus be variably interpreted as the result of some combination of these processes. Such interpretations give rise to divergent pictures of the Precambrian Earth system and models for its evolution through time. New knowledge on the contribution of specific magnetite formation pathways is, therefore, needed to accurately tether our conceptual and numerical models to the geologic record. To constrain pathways of magnetite formation under ferruginous conditions, we conducted geochemical and multi-method microspectroscopic analyses on particles obtained from the water columns and sediments of ferruginous lakes Matano and Towuti, in Indonesia. We find that biologically reactive Fe(III) mineral phases are reduced in the anoxic waters of both lakes, causing the formation of primary authigenic magnetite, directly in the water column. This water column magnetite often takes conspicuous framboidal forms, which given the link to microbial Fe(III) reduction, may provide a biological signature on early Earth and by extension, other planetary bodies. The consumption of more biologically reactive forms of Fe(III) and the resulting delivery of primary magnetite to underlying sediments promotes the burial of oxidized equivalents and implies that primary magnetite formation could have been a principal pathway of Fe delivery to IFs. Combined, the removal of Fe from Earth's surface through biologically induced magnetite formation and subsequent burial in IFs, suggests that seawater chemistry and the microbially mediated reactions that cause magnetite formation played key roles in Earth system evolution and in setting the pace for planetary oxidation through the Precambrian Eons. © 2020
关键词	banded iron formations Earth evolution ferruginous oceans geochemistry magnetite
英文关键词	Biology; Biomineralization; Geologic models; Lakes; Magnetite; Ore reduction; Oxidation; Abiotic pathways; Biological signatures; Earth's surface; Magnetite formation; Mediated reactions; Planetary bodies; Precambrian eons; Seawater chemistry; Iron compounds; biomineralization; early Earth; evolution; lacustrine deposit; magnetite; mass spectrometry; oxidation; Precambrian; water column; Greater Sunda Islands; Lake Matano; Lake Towuti; Malili Lakes; South Sulawesi; Sulawesi; Sunda Isles
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202480
作者单位	Department of Microbiology and Immunology, Department of Earth, Ocean and Atmospheric Sciences, The University of British Columbia, 2020 - 2207 Main Mall, Vancouver, BC V6T 1Z4, Canada; Center for Applied Geosciences, University of Tuebingen, Tuebingen, 72076, Germany; GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Potsdam, 14473, Germany; Research Center for Limnology, Indonesia Institute of Sciences (LIPI), Cibinong Science Centre, Cibinon-Bogor, Indonesia
推荐引用方式 GB/T 7714	Bauer K.W.,Byrne J.M.,Kenward P.,et al. Magnetite biomineralization in ferruginous waters and early Earth evolution[J],2020,549.
APA	Bauer K.W..,Byrne J.M..,Kenward P..,Simister R.L..,Michiels C.C..,...&Crowe S.A..(2020).Magnetite biomineralization in ferruginous waters and early Earth evolution.Earth and Planetary Science Letters,549.
MLA	Bauer K.W.,et al."Magnetite biomineralization in ferruginous waters and early Earth evolution".Earth and Planetary Science Letters 549(2020).