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Geological records of subduction initiation of Neo-Tethyan ocean: Ophiolites and metamorphic soles in southern Turkey
Chen Chen1,2,3; Su BenXun1,2,3; Jing JieJun1,2,3; Xiao Yan3,4; Lin Wei2,3,4; Chu Yang2,3,4; Liu Xia1,2,3; Bai Yang1,2,3
2018
发表期刊ACTA PETROLOGICA SINICA
ISSN1000-0569
卷号34期号:11页码:3302-3314
摘要Subduction initiation is an essential process in magmatic and tectonic evolution of the Earth and plays an important role in plate tectonics. During subduction initiation, four main geological units are formed, namely; magmatic episodes with various geochemical characteristics, supra-subduction zone (SSZ) ophiolites, metamorphic soles and boninitic magmatism with associated chromitite deposits. The Tethyan orogenic belt has been attracting a great deal of attention for a long time as it preserves an excellent record of plate tectonic processes. The southern Turkey occupies part of this belt, and preserves well-defined SSZ ophiolites and associated metamorphic soles, which are considered as the remnants of the Neo-Tethyan oceanic plate between the Eurasian and Arabian continental plates. These geological records of subduction initiation in southern Turkey are summarized as following : 1) mantle-derived magmatic rocks are widely developed and show large compositional variations from MORB-like, through transitional to boninitic; 2) most ophiolites and their associated metamorphic soles are well preserved and contain complex mafic dykes systems, indicating multiple episodes of magmatic activities; 3) the metamorphic soles commonly underlie the ophiolites and their metamorphic histories are coeval to the formation of the ophiolites; 4) numerous chromitite deposits occur in the mantle and crustal sequences of the ophiolites and span a wide range of compositions from high-Cr, intermediate to high-Al types, most likely in response to various magmatic events. Thus, these well-characterized geological massifs record the entire formation to subduction process of the Neo-Tethyan ocean.
关键词Subduction initiation Ophiolite Metamorphic sole Chromite deposit Neo-Tethyan ocean
关键词[WOS]POZANTI-KARSANTI OPHIOLITE ; PASSIVE CONTINENTAL MARGINS ; DIVERSE MAGMA GENERATIONS ; MELT-ROCK INTERACTION ; SM-ND GEOCHRONOLOGY ; LUOBUSA OPHIOLITE ; PODIFORM CHROMITITES ; ISOTOPIC CONSTRAINTS ; U-PB ; GEODYNAMIC SIGNIFICANCE
语种英语
WOS研究方向Geology
WOS类目Geology
WOS记录号WOS:000456929100014
出版者SCIENCE PRESS
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/90194
专题矿产资源研究院重点实验室
通讯作者Su BenXun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
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GB/T 7714
Chen Chen,Su BenXun,Jing JieJun,et al. Geological records of subduction initiation of Neo-Tethyan ocean: Ophiolites and metamorphic soles in southern Turkey[J]. ACTA PETROLOGICA SINICA,2018,34(11):3302-3314.
APA Chen Chen.,Su BenXun.,Jing JieJun.,Xiao Yan.,Lin Wei.,...&Bai Yang.(2018).Geological records of subduction initiation of Neo-Tethyan ocean: Ophiolites and metamorphic soles in southern Turkey.ACTA PETROLOGICA SINICA,34(11),3302-3314.
MLA Chen Chen,et al."Geological records of subduction initiation of Neo-Tethyan ocean: Ophiolites and metamorphic soles in southern Turkey".ACTA PETROLOGICA SINICA 34.11(2018):3302-3314.
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