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Intraplate continental basalts over the past billion years track cooling of the mantle and the onset of modern plate tectonics

文献类型：期刊论文

作者Chen, Qian2,3,4; Liu, He2,3,4; Johnson, Tim1; Hartnady, Michael1; Kirkland, Christopher L.1; Lu, Yongjun5,6,7; Sun, Wei-dong2,3,4
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2022-11-01
卷号597页码:6
ISSN号0012-821X
关键词mantle cooling modern plate tectonics snowball Earth intracontinental basalts
DOI10.1016/j.epsl.2022.117804
通讯作者Liu, He(liuhe@qdio.ac.cn)
英文摘要The temperature of the convecting mantle exerts a first-order control on the rheology, composition, and consequently, tectonic behavior of Earth's lithosphere. Although the mantle has likely been cooling since the Archaean eon, how mantle temperature has evolved thereafter is poorly understood. Here, we apply a statistical analysis to secular changes in the alkali index [AI = whole-rock (Na2O + K2O)2/(SiO2 - 35) as weight%] of global sodic intracontinental basalts, a proxy for the degree of mantle melting, to constrain the evolution of mantle potential temperature (TP) over the past billion years. Our results show that, during the early Neoproterozoic, TP remained relatively constant until the beginning of the Cryogenian (720 Ma), when mantle temperature dropped rapidly over the following similar to 180 Ma. This remarkable episode of cooling records the onset of modern-style plate tectonics characterized by continuous deep subduction of the oceanic lithosphere, consistent with the widespread appearance of blueschists in the metamorphic rock record.(c) 2022 Elsevier B.V. All rights reserved.
资助项目State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan[GPMR201903] ; National Natural Science Foundation of China[42073011]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER
WOS记录号WOS:000869031400003
源URL[http://ir.qdio.ac.cn/handle/337002/180653]  
专题海洋研究所_深海极端环境与生命过程研究中心
通讯作者Liu, He
作者单位1.Curtin Univ, Sch Earth & Planetary Sci, GPO Box U1987, Perth, WA 6845, Australia
2.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
3.Deep Sea Multidisciplinary Res Ctr, Qingdao Pilot Natl Lab Marine Sci & Technol, Qingdao 266237, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100094, Peoples R China
5.Geol Survey Western Australia, Dept Mines Ind Regulat & Safety, 100 Plain St, East Perth, WA 6004, Australia
6.Univ Western Australia, Ctr Excellence Core Crust Fluid Syst CCFS, Ctr Explorat Targeting, Perth, WA 6009, Australia
7.Univ Western Australia, Ctr Excellence Core Crust Fluid Syst CCFS, Australian Res Council, Perth, WA 6009, Australia
推荐引用方式
GB/T 7714		 Chen, Qian,Liu, He,Johnson, Tim,et al. Intraplate continental basalts over the past billion years track cooling of the mantle and the onset of modern plate tectonics[J]. EARTH AND PLANETARY SCIENCE LETTERS,2022,597:6.
APA Chen, Qian.,Liu, He.,Johnson, Tim.,Hartnady, Michael.,Kirkland, Christopher L..,...&Sun, Wei-dong.(2022).Intraplate continental basalts over the past billion years track cooling of the mantle and the onset of modern plate tectonics.EARTH AND PLANETARY SCIENCE LETTERS,597,6.
MLA Chen, Qian,et al."Intraplate continental basalts over the past billion years track cooling of the mantle and the onset of modern plate tectonics".EARTH AND PLANETARY SCIENCE LETTERS 597(2022):6.

入库方式： OAI收割

来源：海洋研究所

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