Geochronology, Geochemistry and Petrogenesis of Diabase Dyke Swarms in;East Tianshan, Xinjiang, NW China

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	Geochronology, Geochemistry and Petrogenesis of Diabase Dyke Swarms in;East Tianshan, Xinjiang, NW China
	Zhang Zuoheng 4; Chai Fengmei ; Wang Tuanhua ; Cheng Yanbo ; Xu Lingang ; Yuan Shunda
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2012
卷号	86 期号:6 页码:1500-1514
关键词	diabase geochemistry LA-ICP-MS zircon U-Pb dating East Tianshan
ISSN号	070GH
英文摘要	Diabase dyke swarms are widespread in the East Tianshan and Beishan regions. LA-ICP-MS zircon U-Pb ages of these diabase vary from 305 Ma to 278 Ma, showing that these dykes were formed during Late Carboniferous-Early Permian magmatism. All diabase samples are subalkali calc-alkali, characterized by slight LREE and LILEs enrichment, and weak negative Ti, Nb and Ta anomalies. The diabase samples have positive eNd(t) values (>+3), high Sr isotopic compositions (initial 87Sr/86Sr values=0.70300.7097), and large variation of Pb isotopic compositions, indicating they were derived from a deplete mantle source. Regional geology and geochemistry evidences indicate that these diabase dyke swarms were generated in a lithosphere extensional setting and had the same magma sources. Initial magmas may be a mixture of depleted asthenosphere mantle and enriched lithospheric mantle during rapid magma ascending.
学科主题	火成岩岩石学
WOS关键词	TRACE-ELEMENT GEOCHEMISTRY ; U-PB AGE ; TECTONIC EVOLUTION ; NORTHERN ; XINJIANG ; NORTHWEST CHINA ; OROGENIC BELT ; CONSTRAINTS ; BASALTS ; ZIRCON ; AREA
WOS研究方向	Geosciences, Multidisciplinary
语种	英语
出版者	This research was jointly supported by the National Natural Science;Foundation of China (No. 40973028) and the Central Public-interest;Scientific Institution Basal Research Fund (K1107). We thank Mr. Deng;Gang and other geologists from the No.6 Team of the Xinjiang Bureau of;Geology and Mineral Resource Exploration for their assistance during;field work. Laboratory analyses were helped by staffs from State Key;Laboratory of Nanjing University, National Geoanalysis Center, and;Geology Institute of Nuclear Industry in Beijing.
WOS记录号	WOS:000313494000019
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39541]
专题	中国地质科学院矿产资源研究所
作者单位	1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China. 2.Xinjiang Univ, Xinjiang Key Lab Geodynam Proc & Metallogen Progn, Urumqi 830049, Xinjiang, Peoples R China. 3.China Min Assoc, Beijing 100013, Peoples R China. 4.中国地质科学院矿产资源研究所
推荐引用方式 GB/T 7714	Zhang Zuoheng,Chai Fengmei,Wang Tuanhua,et al. Geochronology, Geochemistry and Petrogenesis of Diabase Dyke Swarms in;East Tianshan, Xinjiang, NW China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2012,86(6):1500-1514.
APA	Zhang Zuoheng,Chai Fengmei,Wang Tuanhua,Cheng Yanbo,Xu Lingang,&Yuan Shunda.(2012).Geochronology, Geochemistry and Petrogenesis of Diabase Dyke Swarms in;East Tianshan, Xinjiang, NW China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,86(6),1500-1514.
MLA	Zhang Zuoheng,et al."Geochronology, Geochemistry and Petrogenesis of Diabase Dyke Swarms in;East Tianshan, Xinjiang, NW China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 86.6(2012):1500-1514.