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A Neoarchean (ca. 2500 Ma) age for jaspilite-carbonate BIF hosting purported micro-fossils from the Eoarchean (>= 3750 Ma) Nuvvuagittuq supracrustal belt (Quebec, Canada)
Lan, Zhongwu1,2,3; Kamo, Sandra L.4; Roberts, Nick M. W.5; Sano, Yuji6,7; Li, Xian-Hua1
2022-08-01
Source PublicationPRECAMBRIAN RESEARCH
ISSN0301-9268
Volume377Pages:9
Abstract

In the exploration of the origin and evolution of early life on Earth, age determinations of fossil occurrences are of critical importance. Purported microbial fossils preserved in chert and jasper are commonly assigned indirect dates due to a lack of suitable minerals for geochronology in the fossil-bearing horizons. Such indirect dating methods commonly result in age estimates that predate the hosted putative fossil structures, especially when considering possible formation of these structures in post-depositional hydrothermal/metamorphic events. Herein, we report a Neoarchean (ca. 2.5 Ga) U-Pb ID-TIMS zircon and apatite age for jaspilite and carbonate-bearing iron formation that hosts putative ferruginous "microbial fossil structures" in the Eoarchean Nuvvuagittuq supracrustal belt (NSB) in northern Quebec (Canada). In situ oxygen isotope and REE compositions suggest apatite and calcite separated from jaspilite are hydrothermal in origin. Collectively, our results suggest that some of these ferruginous "microbial fossil structures" could be primary biogenic structures produced in an Eoarchean hydrothermal environment that survived subsequent late Archean metamorphism and deformation. In contrast, some are possibly abiogenic structures formed via Liesegang-type processes during late Archean hydrothermal activity. A broader assessment of the ages of putative biostructures in Eoarchean and Paleoarchean rocks, wherein incorrect age assignment remains a persistent problem, is therefore warranted.

KeywordPurported microbial fossils Nuvvuagittuq Supracrustal Belt Apatite and zircon U-Pb geochronology Calcite and apatite chemistry Hydrothermal activity
DOI10.1016/j.precamres.2022.106728
Indexed BySCI
Language英语
WOS KeywordCHEMICAL SEDIMENTARY PROTOLITHS ; U-PB ; PILBARA CRATON ; IRON-FORMATION ; ZIRCON ; ORIGIN ; GA ; EVOLUTION ; GEOCHEMISTRY ; LIFE
Funding ProjectNational Science Foundation of China[41890831] ; National Science Foundation of China[41673016] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences[193112] ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences[GPMR201902]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000832987200003
Funding OrganizationNational Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences
PublisherELSEVIER
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/41103
Collection中国科学院南京地质古生物研究所
Corresponding AuthorLan, Zhongwu
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China
4.Univ Toronto, Dept Earth Sci, Jack Satterly Geochronol Lab, Toronto, ON M5S 3B1, Canada
5.British Geol Survey, Geochronol & Tracers Facil, Keyworth NG12 5GG, Notts, England
6.Univ Tokyo, Atmosphere & Ocean Res Inst, Chiba 2778564, Japan
7.Kochi Univ, Ctr Adv Marine Core Res, Kochi 7838502, Japan
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Lan, Zhongwu,Kamo, Sandra L.,Roberts, Nick M. W.,et al. A Neoarchean (ca. 2500 Ma) age for jaspilite-carbonate BIF hosting purported micro-fossils from the Eoarchean (>= 3750 Ma) Nuvvuagittuq supracrustal belt (Quebec, Canada)[J]. PRECAMBRIAN RESEARCH,2022,377:9.
APA Lan, Zhongwu,Kamo, Sandra L.,Roberts, Nick M. W.,Sano, Yuji,&Li, Xian-Hua.(2022).A Neoarchean (ca. 2500 Ma) age for jaspilite-carbonate BIF hosting purported micro-fossils from the Eoarchean (>= 3750 Ma) Nuvvuagittuq supracrustal belt (Quebec, Canada).PRECAMBRIAN RESEARCH,377,9.
MLA Lan, Zhongwu,et al."A Neoarchean (ca. 2500 Ma) age for jaspilite-carbonate BIF hosting purported micro-fossils from the Eoarchean (>= 3750 Ma) Nuvvuagittuq supracrustal belt (Quebec, Canada)".PRECAMBRIAN RESEARCH 377(2022):9.
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