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	Discovery of the basaltic andesite-high-k basaltic andesite-trachyandesite association in the yuximolegai daban, west tianshan and its geological significance.
	Luo Yong1,2; Niu HeCai1; Shan Qiang1; Zhang Bin3; Zhou ChangPing3; Yang WuBin1,2; Yu XueYuan1
刊名	Acta petrologica sinica
	2009-04-01
卷号	25期号:4页码:934-943
关键词	Yuximolegai daban Calc-alkaline basaltic andesite High-k calc-alkaline basaltic andesite Trachyandesite Late carboniferous
ISSN号	1000-0569
通讯作者	Luo yong()
英文摘要	Within the yuximolegai daban of eastern awulale, west tianshan, the dahalajunshan formation is mainly composed of andesitic (trachyandesitic)-dacitic(trachytic-trachydacitic) lavas and volcaniclastic rocks. based on the petro-geochemical features, an association of calc-alkaline basaltic andesite-high-k calc-alkaline basaltic andesite-trachyandesite (shoshonite series) has been recognized from the upper part of volcanic rocks in the dahalaiunshan formation. the trace element characteristics show that three kinds of volcanic rocks were formed in the island arc environment. the generation of the calc-alkaline basaltic andesite was related to the slab subduction, while the high-k calc-alkaline basaltic andesite and trachyandesite were related to the asthenospheric upwelling induced by the subducted slab break off. the existence of this association implies that the tectonic system has been changed from compression to extension during late carboniferous due to the the subducted slab break off. this association is quite similar to those related to the cu-au mineralization in the world,for instance, that in papua new guinea, indicating that the late carboniferous has a better cu-au ore-forming prospect in this region.
WOS关键词	CARBONIFEROUS VOLCANIC-ROCKS ; GOLD-COPPER MINERALIZATION ; CU-AU ASSOCIATION ; CALC-ALKALINE ; POSTCOLLISIONAL TRANSITION ; CATAMARCA PROVINCE ; ELEMENT RATIOS ; SOUTHERN ALPS ; LA ALUMBRERA ; CONSTRAINTS
WOS研究方向	Geology
WOS类目	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000265945600017
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2399475
专题	中国科学院大学
通讯作者	Luo Yong
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Xinjiang Bur Geol & Mineral Resource Explorat, Geol Survey Team 7, Wusu 833000, Peoples R China
推荐引用方式 GB/T 7714	Luo Yong,Niu HeCai,Shan Qiang,et al. Discovery of the basaltic andesite-high-k basaltic andesite-trachyandesite association in the yuximolegai daban, west tianshan and its geological significance.[J]. Acta petrologica sinica,2009,25(4):934-943.
APA	Luo Yong.,Niu HeCai.,Shan Qiang.,Zhang Bin.,Zhou ChangPing.,...&Yu XueYuan.(2009).Discovery of the basaltic andesite-high-k basaltic andesite-trachyandesite association in the yuximolegai daban, west tianshan and its geological significance..Acta petrologica sinica,25(4),934-943.
MLA	Luo Yong,et al."Discovery of the basaltic andesite-high-k basaltic andesite-trachyandesite association in the yuximolegai daban, west tianshan and its geological significance.".Acta petrologica sinica 25.4(2009):934-943.

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