The formation age and geochemical characteristics of the metavolcanic rock blocks of the Baishuijiang Group in South Qinling

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	The formation age and geochemical characteristics of the metavolcanic rock blocks of the Baishuijiang Group in South Qinling
	Wang, T (Wang Tao); Wang, ZQ (Wang ZongQi); Yan, QR (Yan QuanRen); Yan, Z (Yan Zhen); Qin, XF (Qin XiaoFeng); Zhang, YL (Zhang YingLi); Xiang, ZJ (Xiang ZhongJin)
刊名	ACTA PETROLOGICA SINICA
	2011
卷号	27 期号:3 页码:645-656
关键词	Oceanic island basalt Zircon SHRIMP U-Pb dating Accretionary complex Baishuijiang Group South Qinling
ISSN号	1000-0569
英文摘要	The zircon SHRIMP II U-Pb dating indicates the metavolcanic rock blocks from the Dabao Formation of Baishuijiang Group, in South Qinting orogenic belt, were emplaced at 667 similar to 778Ma. And the blocks are belonging to sub-alkaline and alkaline tholeiite basalts, which have high concentration of TiO(2) and P(2)O(5), and showed enrichment in light REE and large ion lithophile elements, without delta Eu (delta Eu = 1. 00 similar to 1. 17) and Nb-Ta-Zr-Hf abnormally, a low positive epsilon(Nd) (t) (1. 13 similar to 4. 61) value. Their geochemical characters and Sr-Nd istopic composition are similar to those of oceanic island basalt (OIB) that derived from enriched mantle. The new found OIB together with early found Paleozoic oceanic island basalts revealed there was an ancient ocean during the Neoproterozoic and Early Paleozoic in South Qinling. Therefore, the current research results of the matrix and blocks in the Baishuijiang Group and Mian-Lue melange indicate the South Qinling accretionary complex eventually formed in Late Paleozoic.
学科主题	变质岩岩石学
WOS关键词	CENTRAL CHINA ; TECTONIC EVOLUTION ; VOLCANIC-ROCKS ; ISLAND BASALTS ; OROGENIC BELT ; JAPAN TRENCH ; SUBDUCTION ; MANTLE ; CONSTRAINTS ; ENVIRONMENTS
WOS研究方向	Geology
语种	中文
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000289926600005
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39343]
专题	中国地质调查局
作者单位	Chinese Acad Geol Sci, Inst Mineral Resource, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Wang, T ,Wang, ZQ ,Yan, QR ,et al. The formation age and geochemical characteristics of the metavolcanic rock blocks of the Baishuijiang Group in South Qinling[J]. ACTA PETROLOGICA SINICA,2011,27(3):645-656.
APA	Wang, T .,Wang, ZQ .,Yan, QR .,Yan, Z .,Qin, XF .,...&Xiang, ZJ .(2011).The formation age and geochemical characteristics of the metavolcanic rock blocks of the Baishuijiang Group in South Qinling.ACTA PETROLOGICA SINICA,27(3),645-656.
MLA	Wang, T ,et al."The formation age and geochemical characteristics of the metavolcanic rock blocks of the Baishuijiang Group in South Qinling".ACTA PETROLOGICA SINICA 27.3(2011):645-656.