IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Subduction initiation in the Neo-Tethys and formation of the Bursa ophiolite in NW Turkey
Xin, Guang-Yao1,2,3; Chu, Yang1,2,3; Su, Ben-Xun2,3,4; Lin, Wei1,2,3; Cui, Meng-Meng2,3,4; Liu, Xia2,3,4; Uysal, Ibrahim5; Li, Ji -Lei2,3,4; Feng, Zhen-Tian1,2,3
2022-08-01
Source PublicationLITHOS
ISSN0024-4937
Volume422Pages:17
AbstractSubduction of oceanic lithosphere is the primary driver for plate tectonics on earth, but a paucity of geological records hinders our understanding of how subduction is initiated. Two general mechanisms have been proposed -induced and spontaneous nucleation of subduction zones. For both mechanisms, subduction inception begins with initial lower plate burial, but whether upper plate extension and magmatic activity coincide with, or are later than, lower plate underthrusting is the key to identifying spontaneous or induced subduction initiation. Here we present geological, geochemical and geochronological characteristics of mafic dikes and amphibolites from the Bursa ophiolite in NW Turkey, to identify the mechanism of the subduction initiation of the Neo-Tethys Ocean. The mafic dikes are depleted in light rare earth elements (LREE) and slightly enriched in large-ion lithophile elements (LILE), which together with high epsilon Nd(t) values and low 207Pb/204Pb ratios, indicate a MORB-like mantle source similar to the earliest forearc basalts (FAB) of the Izu-Bonin-Mariana subduction initiation system. Zircon U-Pb geochronology shows a crystallization age of 89.8 +/- 0.9 Ma. In contrast, the amphibolites are enriched in LREE and LILE, and have low epsilon Nd(t) values and high 207Pb/204Pb ratios, suggesting an E-MORB-like geochemical affinity. Zircon U-Pb ages of the amphibolites reveal that the metamorphism occurred at 96.4 & PLUSMN; 1.9 Ma, representing the initial burial of the lower plate. Thus, subduction predated upper plate extension and formation of the Bursa oceanic crust by 9.4-3.8 Myr, arguing for induced subduction of Neo-Tethyan lithosphere that formed the Bursa ophiolite.
KeywordBursa ophiolite Mafic dike Metamorphic sole Subduction initiation Neo-Tethys
DOI10.1016/j.lithos.2022.106746
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 ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
WOS KeywordU-PB ; BASALTS ; ZIRCON ; SOLE
Language英语
Funding ProjectNational Natural Science Foundation of China[91755205] ; National Natural Science Foundation of China[91855103] ; National Natural Science Foundation of China[41872208] ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP)[2019QZKK0801] ; State Key Laboratory of Lithospheric Evolution[SKL-Q201801] ; Youth Innovation Promotion Association[2019065] ; Chinese Academy of Sciences
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 ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expe-dition and Research Program (STEP) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
WOS Research AreaGeochemistry & Geophysics ; Mineralogy
WOS SubjectGeochemistry & Geophysics ; Mineralogy
WOS IDWOS:000807570700002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/106059
Collection岩石圈演化国家重点实验室
矿产资源研究院重点实验室
Corresponding AuthorChu, Yang
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
5.Karadeniz Tech Univ, Dept Geol Engn, TR-61080 Trabzon, Turkey
First Author AffilicationState Key Laboratory of Lithospheric Evolution
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution
Recommended Citation
GB/T 7714
Xin, Guang-Yao,Chu, Yang,Su, Ben-Xun,et al. Subduction initiation in the Neo-Tethys and formation of the Bursa ophiolite in NW Turkey[J]. LITHOS,2022,422:17.
APA Xin, Guang-Yao.,Chu, Yang.,Su, Ben-Xun.,Lin, Wei.,Cui, Meng-Meng.,...&Feng, Zhen-Tian.(2022).Subduction initiation in the Neo-Tethys and formation of the Bursa ophiolite in NW Turkey.LITHOS,422,17.
MLA Xin, Guang-Yao,et al."Subduction initiation in the Neo-Tethys and formation of the Bursa ophiolite in NW Turkey".LITHOS 422(2022):17.
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