气候变化领域集成服务门户(CCPortal): Stromatolites as geochemical archives to reconstruct microbial habitats through deep time: Potential and pitfalls of novel radiogenic and stable isotope systems

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DOI	10.1016/j.earscirev.2021.103683
	Stromatolites as geochemical archives to reconstruct microbial habitats through deep time: Potential and pitfalls of novel radiogenic and stable isotope systems
	Hohl S.V.; Viehmann S.
发表日期	2021
ISSN	00128252
卷号	218
英文摘要	Understanding the origin and evolution of life on Earth and potentially other planets in our solar system is of fundamental interest for humanity. For the longest time in Earth's history, life evolved in microbial communities. It is, however, still incompletely understood how, when and where such habitable environments formed and how microbial communities adopted to the drastic changes of the atmosphere-hydrosphere-lithosphere systems through deep time. Stromatolites, i.e., lithified microbial mats that occur in sedimentary successions from at least 3.4 billion years ago until today, hold the geochemical key to our understanding of the evolution of microbial life on Earth and may also provide a blueprint for planetary studies. This review targets the potential and pitfalls of emerging and established isotope applications to stromatolites based on improved and newly developed analytical and technical capabilities in the last decades. We provide a comprehensive overview of present data and the interpretation of applications of radiogenic (U–Pb, Rb–Sr, Sm–Nd) and stable (O, C-N-S, Fe, Mo, Cr, U, Cd) isotope systems in stromatolites. Although the behaviour and fractionation processes of different isotope systems in stromatolites and microbial mats are incompletely understood, the different isotope proxies are used to better understand and reconstruct microbial habitats in stromatolite-forming environments through deep time. Primarily, radiogenic isotopes are used to directly date stromatolites and determine the source of elements in ancient stromatolite environments, while stable isotopes are used to understand redox conditions, metal availability, and (biogenic) metal cycling processes in microbial habitats. We provide deep insights into each isotope application in stromatolites and show their unique potential and future perspectives to bridge the gap between geochemistry and microbiology and to better understand the evolution of microbial life on Earth and beyond. © 2021 The Author(s)
关键词	Early life Microbial habitats Radiogenic isotopes Stable isotopes Stromatolites
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/204047
作者单位	State Key Laboratory of Marine Geology, School of Ocean and Earth Sciences, Tongji University, Siping Road 1239, Shanghai, 200092, China; Department of Geology, University of Vienna, Althanstraße 14, Vienna, 1090, Austria
推荐引用方式 GB/T 7714	Hohl S.V.,Viehmann S.. Stromatolites as geochemical archives to reconstruct microbial habitats through deep time: Potential and pitfalls of novel radiogenic and stable isotope systems[J],2021,218.
APA	Hohl S.V.,&Viehmann S..(2021).Stromatolites as geochemical archives to reconstruct microbial habitats through deep time: Potential and pitfalls of novel radiogenic and stable isotope systems.Earth Science Reviews,218.
MLA	Hohl S.V.,et al."Stromatolites as geochemical archives to reconstruct microbial habitats through deep time: Potential and pitfalls of novel radiogenic and stable isotope systems".Earth Science Reviews 218(2021).