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DOI	10.1016/j.earscirev.2020.103263
	Trace elements in methane-seep carbonates: Potentials, limitations, and perspectives
	Smrzka D.; Feng D.; Himmler T.; Zwicker J.; Hu Y.; Monien P.; Tribovillard N.; Chen D.; Peckmann J.
发表日期	2020
ISSN	00128252
卷号	208
英文摘要	Marine authigenic carbonates form shallow-water microbialites, mud mounds, and hydrocarbon-seep deposits and contain appreciable amounts of trace elements that yield information on paleoenvironments. Element patterns of some of these carbonates archive metabolic processes through geologic time since many trace elements are redox-sensitive and participate in biological cycling. Trace element distributions in microbial carbonates not only yield information on the redox state of ancient oceans, but also on the chemical evolution of Earth's hydrosphere and atmosphere. Trace element patterns can be used to distinguish marine from freshwater sources, to estimate water depth, and can help identify microbial metabolisms through time. A major issue concerning the use of marine carbonates as a paleoenvironmental archive is assessing the degree of early and late diagenetic alteration, which can modify or even reset the original content and distribution of trace elements. The degree and effect of early and late diagenetic alteration can be evaluated by comparing element contents to organic and other inorganic geochemical proxies. Authigenic hydrocarbon-seep carbonates forming in seafloor sediments are the product of microbial oxidation of methane and other hydrocarbon compounds. Seep carbonates are excellent archives, whose trace element contents yield information on sedimentary redox processes, as well as information on seepage intensity and fluid composition. Trace elements serve as proxies in these highly dynamic environments shaped by fluid seepage and chemosynthesis, and can help to reconstruct the evolution of chemosynthesis-based life at seeps through the Phanerozoic. © 2020 Elsevier B.V.
关键词	Authigenic carbonates Element cycles Methane seeps Redox proxies Trace and rare earth elements
英文关键词	carbonate sediment; chemosynthesis; hydrocarbon seep; methane; microbialite; mud mound; paleoenvironment; Phanerozoic; seafloor; seepage; trace element
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/203889
作者单位	Department of Geodynamics and Sedimentology, University of Vienna, Vienna, 1090, Austria; Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University, Shanghai, 201306, China; Geological Survey of Norway, Trondheim, Norway; Department of Geosciences, University of Bremen, Bremen, 28359, Germany; Université de Lille, Laboratory of Oceanology & Geosciences (LOG), UMR 8185 U-Lille-ULCO-CNRS, France; Institute for Geology, Center for Earth System Science and Sustainability, Universität Hamburg, Hamburg, 20146, Germany
推荐引用方式 GB/T 7714	Smrzka D.,Feng D.,Himmler T.,et al. Trace elements in methane-seep carbonates: Potentials, limitations, and perspectives[J],2020,208.
APA	Smrzka D..,Feng D..,Himmler T..,Zwicker J..,Hu Y..,...&Peckmann J..(2020).Trace elements in methane-seep carbonates: Potentials, limitations, and perspectives.Earth Science Reviews,208.
MLA	Smrzka D.,et al."Trace elements in methane-seep carbonates: Potentials, limitations, and perspectives".Earth Science Reviews 208(2020).