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

doi:10.1016/j.epsl.2022.117804

	Intraplate continental basalts over the past billion years track cooling of the mantle and the onset of modern plate tectonics
	Chen, Qian1,2,3 ; Liu, He 1,2,3; Johnson, Tim 4; Hartnady, Michael 4; Kirkland, Christopher L.4; Lu, Yongjun 5,6,7; Sun, Wei-dong1,2,3
	2022-11-01
发表期刊	EARTH AND PLANETARY SCIENCE LETTERS
ISSN	0012-821X
卷号	597 页码:6
通讯作者	Liu, He([email protected])
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.
关键词	mantle cooling modern plate tectonics snowball Earth intracontinental basalts
DOI	10.1016/j.epsl.2022.117804
收录类别	SCI
语种	英语
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
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000869031400003
出版者	ELSEVIER
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/180654
专题	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.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Deep Sea Multidisciplinary Res Ctr, Qingdao Pilot Natl Lab Marine Sci & Technol, Qingdao 266237, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100094, Peoples R China 4.Curtin Univ, Sch Earth & Planetary Sci, GPO Box U1987, Perth, WA 6845, Australia 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
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
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.

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