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  4. 岩石圈演化国家重点实验室
Coupled supercontinent-mantle plume events evidenced by oceanic plume record

文献类型：期刊论文

作者Douce, Luc S.3; Li, Zheng-Xiang3; Ernst, Richard E.1,2; Kirscher, Uwe3,6; El Dien, Hamed Gamal3,5; Mitchell, Ross N.3,4
刊名GEOLOGY
出版日期2020-02-01
卷号48期号:2页码:159-163
ISSN号0091-7613
DOI10.1130/G46754.1
英文摘要The most dominant features in the present-day lower mantle are the two antipodal African and Pacific large low-shear-velocity provinces (LLSVPs). How and when these two structures formed, and whether they are fixed and long lived through Earth history or dynamic and linked to the supercontinent cycles, remain first-order geodynamic questions. Hotspots and large igneous provinces (LIPs) are mostly generated above LLSVPs, and it is widely accepted that the African LLSVP existed by at least ca. 200 Ma beneath the supercontinent Perigee. Whereas the continental LIP record has been used to decipher the spatial and temporal variations of plume activity under the continents, plume records of the oceanic realm before ca. 170 Ma are mostly missing due to oceanic subduction. Here, we present the first compilation of an Oceanic Large Igneous Provinces database (O-LIPdb), which represents the preserved oceanic LIP and oceanic island basalt occurrences preserved in ophiolites. Using this database, we are able to reconstruct and compare the record of mantle plume activity in both the continental and oceanic realms for the past 2 b.y., spanning three supercontinent cycles. Time-series analysis reveals hints of similar cyclicity of the plume activity in the continent and oceanic realms, both exhibiting a periodicity of similar to 500 m.y. that is comparable to the supercontinent cycle, albeit with a slight phase delay. Our results argue for dynamic LLSVPs where the supercontinent cycle and global subduction geometry control the formation and locations of the plumes.
WOS关键词LARGE IGNEOUS PROVINCES ; TRUE POLAR WANDER ; OPHIOLITES ; TECTONICS ; EVOLUTION ; RODINIA ; HETEROGENEITY ; STRATIGRAPHY ; DYNAMICS ; VELOCITY
资助项目Australian Research Council[FL150100133] ; Russian Science Foundation[18-17-00240]
WOS研究方向Geology
语种英语
出版者GEOLOGICAL SOC AMER, INC
WOS记录号WOS:000509553300013
资助机构Australian Research Council ; Australian Research Council ; Russian Science Foundation ; Russian Science Foundation ; Australian Research Council ; Australian Research Council ; Russian Science Foundation ; Russian Science Foundation ; Australian Research Council ; Australian Research Council ; Russian Science Foundation ; Russian Science Foundation ; Australian Research Council ; Australian Research Council ; Russian Science Foundation ; Russian Science Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/95907]  
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Douce, Luc S.
作者单位1.Tomsk State Univ, Fac Geol & Geog, Tomsk 63450, Russia
2.Carleton Univ, Dept Earth Sci, Ottawa, ON K1S 5B6, Canada
3.Curtin Univ, Sch Earth & Planetary Sci, TIGeR, EDRG, Perth, WA 6845, Australia
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
5.Tanta Univ, Fac Sci, Geol Dept, Tanta 31527, Egypt
6.Eberhard Karls Univ Tubingen, Dept Geosci, D-72076 Tubingen, Germany
推荐引用方式
GB/T 7714		 Douce, Luc S.,Li, Zheng-Xiang,Ernst, Richard E.,et al. Coupled supercontinent-mantle plume events evidenced by oceanic plume record[J]. GEOLOGY,2020,48(2):159-163.
APA Douce, Luc S.,Li, Zheng-Xiang,Ernst, Richard E.,Kirscher, Uwe,El Dien, Hamed Gamal,&Mitchell, Ross N..(2020).Coupled supercontinent-mantle plume events evidenced by oceanic plume record.GEOLOGY,48(2),159-163.
MLA Douce, Luc S.,et al."Coupled supercontinent-mantle plume events evidenced by oceanic plume record".GEOLOGY 48.2(2020):159-163.

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来源：地质与地球物理研究所

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