Geochemistry and geological significances of ore-forming porphyry with low Sr and Yb value in Wunugetushan copper-molybdenum deposit, Inner Mongolia

	Geochemistry and geological significances of ore-forming porphyry with low Sr and Yb value in Wunugetushan copper-molybdenum deposit, Inner Mongolia
	Chen ZhiGuang 1,3; Zhang LianChang 1; Wan Bo 1,3; Zhang YuTao 1,3; Wu HuaYing 1,3
刊名	ACTA PETROLOGICA SINICA
	2008
卷号	24 期号:1 页码:115-128
关键词	I-type granite lower Sr and Yb type porphyry copper-molybdenum deposit post-collision orogeny early Jurassic Wunugetushan
ISSN号	1000-0569
文献子类	Article
英文摘要	Wunugetu porphyry copper-molybdenum deposit is located in the western area of northern Da Hinggan Ranges. Based on isotopic dating, it is indicated that the ore-forming porphyry was formed in early Jurassic. The major elements of the ore-forming porphyries show high SiO2, Al2O3, NaO contents and A/CNK value, and low CaO, MgO and Fe2O3T contents, belonging to the calc-alkaline series and I-type granites. The REE and trace elements data of the porphyry are characterized by unconspicuous positive and negative Eu anomalies, LILE enrichment and HFSE depletion, especially for a significantly negative Nb-Ta and Sr-Yb anomaly. The rocks also exhibit Positive epsilon(Nd) ( t) values ( + 0.3 similar to 1.0) and relatively high initial Sr-87/Sr-86 values ( 0.705222 similar to 0.706901). The above features indicate that the ore-forming porphyry shows some characteristics of the mantle sources. The ranges of Pb-206/Pb-204 (18.5631 similar to 19.0192), Pb-207/Pb-204 ( 15.5684 similar to 15.5981) and Pb-208/Pb-204 (38.2554 similar to 38.5285) of the porphyry show components of lower continental crust. Base on studies on the geology and geochemistry, we suggest that the porphyry was formed in the transition stage of collision to post-collision orogeny. Through contrasting with other porphyry copper-molybdenum deposits in China, it is indicated the geochemical characters of the Wunugetushan ore-forming porphyry are similar with other deposits. Combining with geological background, we consider that the Wunugetushan porphyry copper-molybdenum deposit has definite ore-forming conditions and prodigious metallogenic potential.
WOS关键词	NORTHEASTERN CHINA ; EASTERN TIANSHAN ; CRUSTAL GROWTH ; NORTHERN CHILE ; GOLD DEPOSITS ; TRACE-ELEMENT ; NW CHINA ; BELT ; GRANITES ; MINERALIZATION
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000254774000009
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/69758]
专题	中国科学院地质与地球物理研究所
通讯作者	Chen ZhiGuang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Chen ZhiGuang,Zhang LianChang,Wan Bo,et al. Geochemistry and geological significances of ore-forming porphyry with low Sr and Yb value in Wunugetushan copper-molybdenum deposit, Inner Mongolia[J]. ACTA PETROLOGICA SINICA,2008,24(1):115-128.
APA	Chen ZhiGuang,Zhang LianChang,Wan Bo,Zhang YuTao,&Wu HuaYing.(2008).Geochemistry and geological significances of ore-forming porphyry with low Sr and Yb value in Wunugetushan copper-molybdenum deposit, Inner Mongolia.ACTA PETROLOGICA SINICA,24(1),115-128.
MLA	Chen ZhiGuang,et al."Geochemistry and geological significances of ore-forming porphyry with low Sr and Yb value in Wunugetushan copper-molybdenum deposit, Inner Mongolia".ACTA PETROLOGICA SINICA 24.1(2008):115-128.