气候变化领域集成服务门户(CCPortal): Marine diagenesis of tephra aided the Palaeocene-Eocene Thermal Maximum termination

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DOI	10.1016/j.epsl.2021.117101
	Marine diagenesis of tephra aided the Palaeocene-Eocene Thermal Maximum termination
	Longman J.; Gernon T.M.; Palmer M.R.; Jones M.T.; Stokke E.W.; Svensen H.H.
发表日期	2021
ISSN	0012821X
卷号	571
英文摘要	The Palaeocene-Eocene Thermal Maximum (PETM) was a period of intense global warming that began ∼55.9 million years ago and lasted about 170,000 yrs. Various mechanisms have been proposed to cause this warming, including the emplacement of the North Atlantic Igneous Province (NAIP). Equally, many mechanisms have been invoked to explain sequestration of carbon from the ocean-atmosphere system necessary to promote the recovery to more temperate conditions. Here we propose that an important path for carbon sequestration was tied to NAIP volcanism through the precipitation of calcium carbonate (CaCO3) cements within the tephra layers. These cements formed after the deposition and burial of tephra over a wide area of the North Atlantic Ocean during the late Palaeocene and early Eocene. We find strong evidence that authigenic CaCO3 cements formed shortly after tephra deposition. Monte Carlo simulations suggest that this process may have been responsible for a quarter of the carbon sequestered during the PETM recovery phase, providing a major, but previously unconsidered sink of isotopically-light carbon, and one which may have persisted into the Eocene. © 2021 Elsevier B.V.
关键词	authigenic carbonate carbon cycle climate change PETM tephra volcanism
英文关键词	Calcite; Calcium carbonate; Cements; Deposition; Global warming; Intelligent systems; Monte Carlo methods; Authigenic carbonates; Carbon cycles; Carbon sequestration; Condition; North Atlantic Igneous Province; Ocean-atmosphere system; Palaeocene-eocene thermal maximum; Tephrum; Thermal maxima; Volcanism; Carbon; authigenic mineral; calcium carbonate; carbon cycle; carbon sequestration; carbonate group; climate change; diagenesis; Paleocene-Eocene boundary; tephra; volcanism; Atlantic Ocean; Atlantic Ocean (North)
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/203198
作者单位	Marine Isotope Geochemistry, Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Oldenburg, D-26129, Germany; School of Geography and the Environment, University of Oxford, South Parks Road, Oxford, UK OX1 3QY, United Kingdom; School of Ocean and Earth Sciences, University of Southampton, Southampton, SO14 3ZH, United Kingdom; Centre for Earth Evolution and Dynamics (CEED), University of Oslo, P.O. Box 1028 Blindern, Oslo, 0315, Norway
推荐引用方式 GB/T 7714	Longman J.,Gernon T.M.,Palmer M.R.,et al. Marine diagenesis of tephra aided the Palaeocene-Eocene Thermal Maximum termination[J],2021,571.
APA	Longman J.,Gernon T.M.,Palmer M.R.,Jones M.T.,Stokke E.W.,&Svensen H.H..(2021).Marine diagenesis of tephra aided the Palaeocene-Eocene Thermal Maximum termination.Earth and Planetary Science Letters,571.
MLA	Longman J.,et al."Marine diagenesis of tephra aided the Palaeocene-Eocene Thermal Maximum termination".Earth and Planetary Science Letters 571(2021).