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	Geochronology and geochemistry of the carboniferous volcanic rocks in zhongyangchang from tianshuihai terrane, xinjiang: petrogenesis and geological significance
	Hu Jun1,2,3; Wang He1; Huang ChaoYang4
刊名	Acta petrologica sinica
	2016-06-01
卷号	32期号:6页码:1699-1714
关键词	Tianshuihai terrane Carboniferous Volcanic rocks Back-arc basin Extension Palo-tethys ocean
ISSN号	1000-0569
通讯作者	Wang he(wanghe@gig.ac.cn)
英文摘要	A suit of interbedding basalts, basaltic andesites and rhyolites distributes in zhongyangchang located in the western part of tianshuihai terrane. in this paper, the signatures of geology, petrology, geochronology and geochemistry characteristics on the rocks are researched. three groups of ages are acquired by la-icp-ms zircon u-pb dating of rhyolite. the age of 343. 5 +/- 4. 1ma indicates the volcanic rocks are formed during early carboniferous. the ages of 2439 +/- 26ma and 1988 +/- 36ma imply the existence of the precambrian crystalline basement in tianshuihai terrane. lithologic characteristics of the basaltic rocks transit from tholeiitic series, calc-alkaline series to alkaline series. additionally, the basaltic rocks which have some difference from typical continental marginal arc okinawa trough basalts, display e-morb ( oib), continental within-plate basalt and island-arc basalt signatures, implying that the volcanic rocks in zhongyangchang may form in abnormal back-arc basin in tianshuihai terrane. the difference in major, trace element and ree normalized patterns of basaltic rocks and rhyolites suggests the different source. the source of basaltic rocks is similar to mantle source of e-morb ( oib) and occurred partial melting. when the primary magma ascent, the mineral fractionation took place, moreover, crustal contamination also occurred. the rhyolites are characterized by high-silicon, high-alkali and generated by partial melting of upper crust. the early carboniferous volcanic rocks in zhongyangchang may be the record of the extension in early period for the western part of palo-tethys ocean, providing new evidence for the pattern of poly-islands oceanic basin in karakorum-tianshuihai terrane.
WOS关键词	U-PB AGES ; BACK-ARC BASIN ; CONTINENTAL-CRUST ; SOUTHERN MARGIN ; TECTONIC IMPLICATIONS ; SUPERIOR PROVINCE ; NORTHWEST CHINA ; GREENSTONE-BELT ; OKINAWA TROUGH ; IGNEOUS ROCKS
WOS研究方向	Geology
WOS类目	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000379796600010
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374571
专题	中国科学院大学
通讯作者	Wang He
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Geol Survey, Wuhan Ctr, Wuhan 430205, Peoples R China 4.Chongqing Vocat Inst Engn, Chongqing 402260, Peoples R China
推荐引用方式 GB/T 7714	Hu Jun,Wang He,Huang ChaoYang. Geochronology and geochemistry of the carboniferous volcanic rocks in zhongyangchang from tianshuihai terrane, xinjiang: petrogenesis and geological significance[J]. Acta petrologica sinica,2016,32(6):1699-1714.
APA	Hu Jun,Wang He,&Huang ChaoYang.(2016).Geochronology and geochemistry of the carboniferous volcanic rocks in zhongyangchang from tianshuihai terrane, xinjiang: petrogenesis and geological significance.Acta petrologica sinica,32(6),1699-1714.
MLA	Hu Jun,et al."Geochronology and geochemistry of the carboniferous volcanic rocks in zhongyangchang from tianshuihai terrane, xinjiang: petrogenesis and geological significance".Acta petrologica sinica 32.6(2016):1699-1714.

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