Qiarbahete Sanukitoids and adakitic rocks in NW Tianshan: age and geochemical constraints on their petrogenesis and tectonic settings

doi:10.1080/00206814.2013.810369

	Qiarbahete Sanukitoids and adakitic rocks in NW Tianshan: age and geochemical constraints on their petrogenesis and tectonic settings
	Xie, Hong-Jing 1,2; Wu, Guang 3; Zhu, Ming-Tian 4; Zhong, Wei 2; Liu, Jun 3; Mei, Mei 2; Wang, Yu-Wang 1
刊名	INTERNATIONAL GEOLOGY REVIEW
	2013-11-01
卷号	55 期号:15 页码:1941-1958
关键词	Qiarbahete complex zircon SHRIMP U-Pb age Sanukitoids adakitic rocks NW Tianshan
ISSN号	0020-6814
DOI	10.1080/00206814.2013.810369
文献子类	Article
英文摘要	The Qiarbahete complex in NW China consists of gabbroic diorite, granodiorite, and late-stage quartz diorite porphyry veins. Zircon sensitive high-resolution ion microprobe (SHRIMP) U-Pb analyses show that the gabbroic diorite and granodiorite formed at 368 +/- 5.2 Ma and 354 +/- 4.1 Ma, respectively, indicating that the complex was emplaced in the Late Devonian-Early Carboniferous. The gabbroic diorites, characteristic of Sanukitoids, exhibit high Mg-# (62 average), MgO (6.84% average), Cr (195 ppm average), and Ni (61.4 ppm average) contents. The rocks show moderately fractionated rare earth element (REEs) patterns and weak negative Eu anomalies (Eu: 0.83-0.89), enrichment of large ion lithophile elements (LILEs), and depletion of high field strength elements (HFSEs), with low E-Nd(t) values (1.46-1.73). The gabbroic diorites originated from partial melting of a hydrous mantle wedge followed by assimilation of crust during ascent. The granodiorites show a geochemical affinity with adakitic rocks, e.g. SiO2 (64.95-67.87%) > 56%, Al2O3 (15.88-16.56%) > 15%, MgO (1.79-2.31%) < 3%, Sr (315-375 ppm) > 300 ppm, and Yb (1.84-2.06 ppm). They are enriched in light rare earth elements (LREEs) and LILEs and depleted in HFSEs, with weak negative Eu anomalies (Eu: 0.78-0.87). The granodiorites were mainly derived by the partial melting of a subducted oceanic slab, followed by subsequent melt-mantle interaction and crustal rocks contamination. All these indicate that the Qiarbahete complex was emplaced in a continental arc setting attending the southward subduction of the Junggar Ocean during the Late Devonian-early Carboniferous, generating the lateral accretion of continental crust in NW Tianshan.
WOS关键词	PHANEROZOIC CRUSTAL GROWTH ; CARBONIFEROUS VOLCANIC-ROCKS ; UNDERPLATED BASALTIC CRUST ; TRACE-ELEMENT GEOCHEMISTRY ; HIGH-MAGNESIAN ANDESITES ; LATE JURASSIC GRANITOIDS ; ND ISOTOPIC EVIDENCE ; SLAB-DERIVED MELTS ; ASIA OROGENIC BELT ; HIGH-MG ANDESITES
WOS研究方向	Geology
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000324088000007
资助机构	Chinese National Key Technology RD Programme(2007BAB25B03) ; Chinese National Key Technology RD Programme(2007BAB25B03) ; National Natural Science Foundation of China(41172081 ; National Natural Science Foundation of China(41172081 ; Chinese National 973 Programme(2007CB411308) ; Chinese National 973 Programme(2007CB411308) ; 41030424) ; 41030424) ; Chinese National Key Technology RD Programme(2007BAB25B03) ; Chinese National Key Technology RD Programme(2007BAB25B03) ; National Natural Science Foundation of China(41172081 ; National Natural Science Foundation of China(41172081 ; Chinese National 973 Programme(2007CB411308) ; Chinese National 973 Programme(2007CB411308) ; 41030424) ; 41030424) ; Chinese National Key Technology RD Programme(2007BAB25B03) ; Chinese National Key Technology RD Programme(2007BAB25B03) ; National Natural Science Foundation of China(41172081 ; National Natural Science Foundation of China(41172081 ; Chinese National 973 Programme(2007CB411308) ; Chinese National 973 Programme(2007CB411308) ; 41030424) ; 41030424) ; Chinese National Key Technology RD Programme(2007BAB25B03) ; Chinese National Key Technology RD Programme(2007BAB25B03) ; National Natural Science Foundation of China(41172081 ; National Natural Science Foundation of China(41172081 ; Chinese National 973 Programme(2007CB411308) ; Chinese National 973 Programme(2007CB411308) ; 41030424) ; 41030424)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/87790]
专题	中国科学院地质与地球物理研究所
通讯作者	Xie, Hong-Jing
作者单位	1.Beijing Inst Geol Mineral Resources, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 3.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Xie, Hong-Jing,Wu, Guang,Zhu, Ming-Tian,et al. Qiarbahete Sanukitoids and adakitic rocks in NW Tianshan: age and geochemical constraints on their petrogenesis and tectonic settings[J]. INTERNATIONAL GEOLOGY REVIEW,2013,55(15):1941-1958.
APA	Xie, Hong-Jing.,Wu, Guang.,Zhu, Ming-Tian.,Zhong, Wei.,Liu, Jun.,...&Wang, Yu-Wang.(2013).Qiarbahete Sanukitoids and adakitic rocks in NW Tianshan: age and geochemical constraints on their petrogenesis and tectonic settings.INTERNATIONAL GEOLOGY REVIEW,55(15),1941-1958.
MLA	Xie, Hong-Jing,et al."Qiarbahete Sanukitoids and adakitic rocks in NW Tianshan: age and geochemical constraints on their petrogenesis and tectonic settings".INTERNATIONAL GEOLOGY REVIEW 55.15(2013):1941-1958.