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Evidence for microbes in early Neoproterozoic stromatolites
Corresponding AuthorLan, Zhongwu(lzw1981@126.com)
Lan, Zhongwu1,2,3; Zhang, Shujing1; Tucker, Maurice4; Li, Zhensheng5; Zhao, Zhuoya5
2020-03-15
Source PublicationSEDIMENTARY GEOLOGY
ISSN0037-0738
Volume398Pages:11
AbstractThe biogenesis of stromatolites has long been discussed since many lack convincing evidence of their biological origin. This has particularly been the case with older Precambrian examples where widespread diagenetic and metamorphic processes have commonly destroyed microbial relics; in some cases however, evidence has been preserved through very early mineralisation. Precambrian stromatolites are relatively abundant but it is extremely rare that they contain calcified or dolomitized cyanobacteria and biofilms. This study provides evidence from early Neoproterozoic columnar stromatolites in the jiuliqiao Formation from the southeastern margin of the North China Platform for fossilized extracellular polymeric substances (EPS) and cyanobacteria, along with nanospheres which may represent permineralised viruses or viral-like particles. A similar chemical composition and colour along with their embedded and cross-cutting relationships with the matrix suggest they are syndepositional products, and not modern artefacts or the result of sample preparation. The interweaving of cyanobacterial filaments with detrital grains such as quartz and intraclasts indicates trapping, baffling and binding processes. The presence of virus-like particles and mineralized EPS with anhedral, fine-grained calcite suggests they may have provided initial nucleation sites for subsequent carbonate precipitation. This study demonstrates the use of a high-definition scanning electron microscope to detect fossilized (calcified) filamentous and spheroidal bacteriomorphs within ancient stromatolites in order to confirm their biogenesis. (C) 2020 Elsevier B.V. All rights reserved.
KeywordStromatolites Early Neoproterozoic EPS Cyanobacteria Nanospheres Virus/coccoid bacteria
DOI10.1016/j.sedgeo.2020.105589
Indexed BySCI
Language英语
WOS KeywordQARN ALAM ; CARBONATE ; PRECIPITATION ; NANOBACTERIA ; DOLOMITE ; FOSSILS ; LOESS ; CHINA ; LAKE ; BIOMINERALIZATION
Funding ProjectNational Natural 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 SubjectGeology
WOS IDWOS:000526540400013
Funding OrganizationNational Natural 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
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Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/31762
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 Bristol, Sch Earth Sci, Bristol BS8 1RJ, Avon, England
5.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Anhui, Peoples R China
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,Zhang, Shujing,Tucker, Maurice,et al. Evidence for microbes in early Neoproterozoic stromatolites[J]. SEDIMENTARY GEOLOGY,2020,398:11.
APA Lan, Zhongwu,Zhang, Shujing,Tucker, Maurice,Li, Zhensheng,&Zhao, Zhuoya.(2020).Evidence for microbes in early Neoproterozoic stromatolites.SEDIMENTARY GEOLOGY,398,11.
MLA Lan, Zhongwu,et al."Evidence for microbes in early Neoproterozoic stromatolites".SEDIMENTARY GEOLOGY 398(2020):11.
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