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Initial subduction of Neo-Tethyan ocean: Geochemical records in chromite and mineral inclusions in the Pozanti-Karsanti ophiolite, southern Turkey

文献类型：期刊论文

作者Liu, Xia1,2,3,8; Su, Ben-Xun1,2,3; Xiao, Yan2,4; Chen, Chen1,2,3; Uysal, Ibrahim5; Jing, Jie-Jun1,2,3; Zhang, Peng-Fei6; Chu, Yang2,4; Lin, Wei2,3,4; Sakyi, Patrick Asamoah7
刊名ORE GEOLOGY REVIEWS
出版日期2019-07-01
卷号110页码:15
关键词Chromite Trace elements Mineral inclusions Parental magma Subduction initiation
ISSN号0169-1368
DOI10.1016/j.oregeorev.2019.05.012
英文摘要Chromitites in the Pozanu-Karsanti ophiolite in Turkey mainly occur as podiform chromitites within mantle harzburgite and stratiform-like chromitites in mantle-crust transition zone. Chromites in chromitites have varing Cr# from 62.8 to 80.3 and can be divided into two types, namely; intermediate (Cr#: 62.8 - 69.2) and high-Cr (Cr#: 73.9 - 80.3) types. Major elements of the high-Cr chromitite have an affinity with bonfnite, whereas the intermediate chromitite shows transitional features between MORB and boninite. The compositional differences in clinopyroxene inclusions between intermediate- and high-Cr chromitite, coupled with the relatively high trace element contents (e.g. V, Ga) in the high-Cr chromitite, indicate distinctive parental magmas. Trace elemental profile analysis of a nodular chromite grain in one nodular chromitite sample PK14-41 demonstrates significant but non-systematic variations from the core to the rim, which also confirmed the compositional heterogeneity of the parental magmas. The presence of primary hydrous mineral inclusions such as amphibole in chromite, together with Ca-rich minerals (e.g. calcite), reflect the water-rich and Ca-rich characteristics of the parental magma. The higher fO(2) of high-Cr chromitite evidenced by the lower V/Mn values may be due to more oxidized fluids released from downgoing crustal materials. Thus, we conclude that the parental magmas of the Pozanti-Karsanti chromitite were derived from a proto-forearc mantle and evolved to higher fO(2) with the subduction initiation at that time, but were water- and Ca-rich in general.
WOS关键词NORTHERN OMAN OPHIOLITE ; HIGH-CR CHROMITITES ; PODIFORM CHROMITITES ; ARC MANTLE ; PARTITION-COEFFICIENTS ; ISOTOPE FRACTIONATION ; SW TURKEY ; KIZILDAG OPHIOLITE ; METAMORPHIC SOLES ; SOLID INCLUSIONS
资助项目National Natural Science Foundation of China[91755205] ; National Natural Science Foundation of China[41772055] ; National Natural Science Foundation of China[91855102] ; State Key Laboratory of Lithospheric Evolution[201701]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000474320900008
出版者ELSEVIER SCIENCE BV
资助机构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 ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; 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 ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; 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 ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; 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 ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution
源URL[http://ir.iggcas.ac.cn/handle/132A11/92683]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Liu, Xia
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
5.Karadeniz Tech Univ, Dept Geol Engn, TR-61080 Trabzon, Turkey
6.Univ Hong Kong, Dept Earth Sci, Pokfulam Rd, Hong Kong, Peoples R China
7.Univ Ghana, Dept Earth Sci, POB LG 58, Legon, Ghana
8.19 Beitucheng Western Rd, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Xia,Su, Ben-Xun,Xiao, Yan,et al. Initial subduction of Neo-Tethyan ocean: Geochemical records in chromite and mineral inclusions in the Pozanti-Karsanti ophiolite, southern Turkey[J]. ORE GEOLOGY REVIEWS,2019,110:15.
APA Liu, Xia.,Su, Ben-Xun.,Xiao, Yan.,Chen, Chen.,Uysal, Ibrahim.,...&Sakyi, Patrick Asamoah.(2019).Initial subduction of Neo-Tethyan ocean: Geochemical records in chromite and mineral inclusions in the Pozanti-Karsanti ophiolite, southern Turkey.ORE GEOLOGY REVIEWS,110,15.
MLA Liu, Xia,et al."Initial subduction of Neo-Tethyan ocean: Geochemical records in chromite and mineral inclusions in the Pozanti-Karsanti ophiolite, southern Turkey".ORE GEOLOGY REVIEWS 110(2019):15.

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来源：地质与地球物理研究所

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