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Destruction of Cratonic Lithosphere Induced by Oceanic Subduction Initiation
Chen, Miao1; Shen, Xiaobing1; Leng, Wei1,2; Chen, Ling3,4
2020-08-16
Source PublicationGEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
Volume47Issue:15Pages:10
AbstractBased on the plate reconstruction which shows that most core parts of present cratons locate in the interior of the continents during the supercontinent cycles, we propose that the oceanic subduction initiation may trigger the destruction of marginal cratonic lithosphere. We develop a simplified force analysis for the destruction of subcontinental lithospheric mantle (SCLM) by the subduction initiation. Our analysis suggests three key parameters: the SCLM thickness, the contact angle between SCLM and oceanic plate, and the coefficient of friction of the SCLM. Our numerical models further support our analysis and demonstrate that a thicker SCLM with a larger contact angle is easier to be destructed by subduction initiation, and the yield strength of the SCLM has a significant impact on the spatial range of its destruction. Our results provide important insights into the parameters controlling cratonic lithospheric destruction and explain the distribution of preserved cratons in the interior of continental plates. Plain Language Summary According to the present location of craton cores, we put forward that the subduction initiation of the oceanic plate can destroy the marginal parts of cratonic lithosphere directly contacting with subduction zones that explain the distribution of cratons during the supercontinent cycle. We used numerical models for the destruction of subcontinental lithospheric mantle (SCLM) by the subduction initiation which suggests three key parameters: the SCLM thickness, the contact angle between SCLM and oceanic plate, and the coefficient of friction of the SCLM. From our results, these parameters, which control the destruction, can explain the distribution of preserved cratons in the interior of continental plates.
Keywordsubcontinental lithospheric mantle subduction initiation cratonic destruction
DOI10.1029/2020GL089140
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordCONTINENTAL-CRUST ; MANTLE CONVECTION ; DELAMINATION ; EVOLUTION ; GROWTH
Language英语
Funding ProjectNational Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41820104004] ; National Natural Science Foundation of China[41774105]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000560376100086
PublisherAMER GEOPHYSICAL UNION
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Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/97673
Collection岩石圈演化国家重点实验室
Corresponding AuthorLeng, Wei
Affiliation1.Univ Sci & Technol China, Sch Earth & Space Sci, Lab Seismol & Phys Earths Interior, Hefei, Peoples R China
2.CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Chen, Miao,Shen, Xiaobing,Leng, Wei,et al. Destruction of Cratonic Lithosphere Induced by Oceanic Subduction Initiation[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(15):10.
APA Chen, Miao,Shen, Xiaobing,Leng, Wei,&Chen, Ling.(2020).Destruction of Cratonic Lithosphere Induced by Oceanic Subduction Initiation.GEOPHYSICAL RESEARCH LETTERS,47(15),10.
MLA Chen, Miao,et al."Destruction of Cratonic Lithosphere Induced by Oceanic Subduction Initiation".GEOPHYSICAL RESEARCH LETTERS 47.15(2020):10.
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