SHRIMP U-Pb zircon dating of gabbro from the Binggou ophiolite melange in the northern Altyn,and geological implication

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	SHRIMP U-Pb zircon dating of gabbro from the Binggou ophiolite melange in the northern Altyn,and geological implication
	Yang, ZJ (Yang ZiJing); Ma, HD (Ma HuaDong); Wang, ZX (Wang ZongXiu); Xiao, WF (Xiao WeiFeng)
刊名	ACTA PETROLOGICA SINICA
	2012
卷号	28 期号:7 页码:2269-2276
关键词	Ophiolite melange Gabbro Zircon SHRIMP dating Altyn Tagh
ISSN号	1000-0569
英文摘要	Binggou ophiolite melange, the eastern part of Hongliugou ophiolite, Altyn Tagh, is composed of serpentinites, harzburgites,pyroxenites and gabbros etc. Geochemistry analysis shows that the serpentinites are characterized by high Mg contents,with Mg/Fe ratio greater than 9, and low Al, Ca, Na, K contents. Determined by rare earth elements and trace elements compositions, the gabbro is very similar to MORB, and ultrabasic rocks are close to PRIMA. The SHRIMP U-Pb age of zircon from the gabbro is 449.5 +/- 10.9Ma which is belongs to Middle to Late Ordovician. The country rocks of Binggou ophiolite melange are mainly composed of elastic rocks,pyroclastics, volcanics, and part of carbonates which combined to be a huge thick sequence. These rocks contain basalt which has characteristics of MORB and the pillow structure, and radiolarian cherts which formed in Middle to Late Ordovician that is consistent with the gabbro SHRIMP age. These evidences further convinced that the Early Paleozoic ocean basin has been existed in the Hongliugou area.
学科主题	地质年代学
WOS关键词	NORTHEASTERN TIBETAN PLATEAU ; GEOCHRONOLOGY ; ALTUN ; MOUNTAINS ; MARGIN ; TIME ; AGE
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000306631600026
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39871]
专题	中国地质调查局
作者单位	Natl 305 Project Off, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Yang, ZJ ,Ma, HD ,Wang, ZX ,et al. SHRIMP U-Pb zircon dating of gabbro from the Binggou ophiolite melange in the northern Altyn,and geological implication[J]. ACTA PETROLOGICA SINICA,2012,28(7):2269-2276.
APA	Yang, ZJ ,Ma, HD ,Wang, ZX ,&Xiao, WF .(2012).SHRIMP U-Pb zircon dating of gabbro from the Binggou ophiolite melange in the northern Altyn,and geological implication.ACTA PETROLOGICA SINICA,28(7),2269-2276.
MLA	Yang, ZJ ,et al."SHRIMP U-Pb zircon dating of gabbro from the Binggou ophiolite melange in the northern Altyn,and geological implication".ACTA PETROLOGICA SINICA 28.7(2012):2269-2276.