globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2021.117101
论文题名:
Marine diagenesis of tephra aided the Palaeocene-Eocene Thermal Maximum termination
作者: Longman J.; Gernon T.M.; Palmer M.R.; Jones M.T.; Stokke E.W.; Svensen H.H.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 571
语种: 英语
中文关键词: 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)
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165576
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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

Recommended Citation:
Longman J.,Gernon T.M.,Palmer M.R.,et al. Marine diagenesis of tephra aided the Palaeocene-Eocene Thermal Maximum termination[J]. Earth and Planetary Science Letters,2021-01-01,571
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