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

doi:10.1016/j.oregeorev.2019.05.012

CORC > 地质与地球物理研究所 > 中国科学院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

	Initial subduction of Neo-Tethyan ocean: Geochemical records in chromite and mineral inclusions in the Pozanti-Karsanti ophiolite, southern Turkey
	Liu, Xia 1,2,3,8; Su, Ben-Xun 1,2,3; Xiao, Yan 2,4; Chen, Chen 1,2,3; Uysal, Ibrahim 5; Jing, Jie-Jun 1,2,3; Zhang, Peng-Fei 6; Chu, Yang 2,4; Lin, Wei 2,3,4; Sakyi, Patrick Asamoah 7
刊名	ORE GEOLOGY REVIEWS
	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
DOI	10.1016/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.
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
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000474320900008
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
内容类型	期刊论文
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.