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  2. 地质与地球物理研究所
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  4. 岩石圈演化国家重点实验室
Transient mobilization of subcrustal carbon coincident with Palaeocene-Eocene Thermal Maximum

文献类型：期刊论文

作者Gernon, Thomas M.7; Barr, Ryan7; Fitton, J. Godfrey1; Hincks, Thea K.7; Keir, Derek2,7; Longman, Jack3,7; Merdith, Andrew S.5,6; Mitchell, Ross N.4; Palmer, Martin R.7
刊名NATURE GEOSCIENCE
出版日期2022-06-23
页码21
ISSN号1752-0894
DOI10.1038/s41561-022-00967-6
英文摘要Plume magmatism and continental breakup led to the opening of the northeast Atlantic Ocean during the globally warm early Cenozoic. This warmth culminated in a transient (170 thousand year, kyr) hyperthermal event associated with a large, if poorly constrained, emission of carbon called the Palaeocene-Eocene Thermal Maximum (PETM) 56 million years ago (Ma). Methane from hydrothermal vents in the coeval North Atlantic Igneous Province (NAIP) has been proposed as the trigger, though isotopic constraints from deep sea sediments have instead implicated direct volcanic carbon dioxide (CO2) emissions. Here we calculate that background levels of volcanic outgassing from mid-ocean ridges and large igneous provinces yield only one-fifth of the carbon required to trigger the hyperthermal. However, geochemical analyses of volcanic sequences spanning the rift-to-drift phase of the NAIP indicate a sudden similar to 220 kyr-long intensification of magmatic activity coincident with the PETM. This was likely driven by thinning and enhanced decompression melting of the sub-continental lithospheric mantle, which critically contained a high proportion of carbon-rich metasomatic carbonates. Melting models and coupled tectonic-geochemical simulations indicate that >10(4) gigatons of subcrustal carbon was mobilized into the ocean and atmosphere sufficiently rapidly to explain the scale and pace of the PETM.
WOS关键词TRACE-ELEMENT ; DEEP CARBON ; ICELAND PLUME ; RARE-EARTH ; ISOTOPE COMPOSITIONS ; IGNEOUS PROVINCE ; MANTLE PLUMES ; LITHOSPHERE ; GREENLAND ; ND
资助项目Natural Environment Research Council (NERC)[NE/R004978/1] ; Alan Turing Institute under the EPSRC[EP/N510129/1] ; NERC[NE/K00543X/1] ; National Natural Science Foundation of China[41888101] ; Key Research Programme of the Institute of Geology & Geophysics, Chinese Academy of Sciences (CAS)[IGGCAS-201905] ; Deep Carbon Observatory ; Richard Lounsbery Foundation ; MCSA Fellowship NEOEARTH[893615]
WOS研究方向Geology
语种英语
出版者NATURE PORTFOLIO
WOS记录号WOS:000814973200001
资助机构Natural Environment Research Council (NERC) ; Natural Environment Research Council (NERC) ; Alan Turing Institute under the EPSRC ; Alan Turing Institute under the EPSRC ; NERC ; NERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Programme of the Institute of Geology & Geophysics, Chinese Academy of Sciences (CAS) ; Key Research Programme of the Institute of Geology & Geophysics, Chinese Academy of Sciences (CAS) ; Deep Carbon Observatory ; Deep Carbon Observatory ; Richard Lounsbery Foundation ; Richard Lounsbery Foundation ; MCSA Fellowship NEOEARTH ; MCSA Fellowship NEOEARTH ; Natural Environment Research Council (NERC) ; Natural Environment Research Council (NERC) ; Alan Turing Institute under the EPSRC ; Alan Turing Institute under the EPSRC ; NERC ; NERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Programme of the Institute of Geology & Geophysics, Chinese Academy of Sciences (CAS) ; Key Research Programme of the Institute of Geology & Geophysics, Chinese Academy of Sciences (CAS) ; Deep Carbon Observatory ; Deep Carbon Observatory ; Richard Lounsbery Foundation ; Richard Lounsbery Foundation ; MCSA Fellowship NEOEARTH ; MCSA Fellowship NEOEARTH ; Natural Environment Research Council (NERC) ; Natural Environment Research Council (NERC) ; Alan Turing Institute under the EPSRC ; Alan Turing Institute under the EPSRC ; NERC ; NERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Programme of the Institute of Geology & Geophysics, Chinese Academy of Sciences (CAS) ; Key Research Programme of the Institute of Geology & Geophysics, Chinese Academy of Sciences (CAS) ; Deep Carbon Observatory ; Deep Carbon Observatory ; Richard Lounsbery Foundation ; Richard Lounsbery Foundation ; MCSA Fellowship NEOEARTH ; MCSA Fellowship NEOEARTH ; Natural Environment Research Council (NERC) ; Natural Environment Research Council (NERC) ; Alan Turing Institute under the EPSRC ; Alan Turing Institute under the EPSRC ; NERC ; NERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Programme of the Institute of Geology & Geophysics, Chinese Academy of Sciences (CAS) ; Key Research Programme of the Institute of Geology & Geophysics, Chinese Academy of Sciences (CAS) ; Deep Carbon Observatory ; Deep Carbon Observatory ; Richard Lounsbery Foundation ; Richard Lounsbery Foundation ; MCSA Fellowship NEOEARTH ; MCSA Fellowship NEOEARTH
源URL[http://ir.iggcas.ac.cn/handle/132A11/105882]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Gernon, Thomas M.
作者单位1.Univ Edinburgh, Sch GeoSci, Edinburgh, Midlothian, Scotland
2.Univ Firenze, Dipartimento Sci Terra, Florence, Italy
3.Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm, Oldenburg, Germany
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
5.Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England
6.Univ Lyon 1, Lab Geol, Villeurbanne, France
7.Univ Southampton, Sch Ocean & Earth Sci, Southampton, Hants, England
推荐引用方式
GB/T 7714		 Gernon, Thomas M.,Barr, Ryan,Fitton, J. Godfrey,et al. Transient mobilization of subcrustal carbon coincident with Palaeocene-Eocene Thermal Maximum[J]. NATURE GEOSCIENCE,2022:21.
APA Gernon, Thomas M..,Barr, Ryan.,Fitton, J. Godfrey.,Hincks, Thea K..,Keir, Derek.,...&Palmer, Martin R..(2022).Transient mobilization of subcrustal carbon coincident with Palaeocene-Eocene Thermal Maximum.NATURE GEOSCIENCE,21.
MLA Gernon, Thomas M.,et al."Transient mobilization of subcrustal carbon coincident with Palaeocene-Eocene Thermal Maximum".NATURE GEOSCIENCE (2022):21.

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来源：地质与地球物理研究所

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