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题名: Petrogenesis of the Chagangnuoer deposit, NW China: a general model for submarine volcanic-hosted skarn iron deposits
作者: Sun, WL; Niu, YL; Ma, YX; Liu, Y; Zhang, GR; Hu, ZX; Zhang, ZW; Chen, S; Li, JY; Wang, XH; Gong, HM
收录类别: SCIE ; BIOSIS ; CSCD
出版日期: 2015-02
刊名: SCIENCE BULLETIN
卷号: 60, 期号:3, 页码:363-379
期刊主办单位: 中国科学院 ; 国家自然科学基金委员会
出版者: SCIENCE CHINA PRESS
出版地: BEIJING
英文摘要: The Chagangnuoer deposit is a typical submarine volcanic rock-hosted skarn iron deposit, where orebodies mainly occur in andesitic rocks of the Dahalajunshan Formation (DF) with skarns well developed around orebodies. The volcanic rocks of the DF in the Chagangnuoer deposit display calc-alkaline characteristics. The ore-bearing andesitic rocks have high Sr-87/Sr-86((i)) (0.7058-0.7117) and low epsilon (Nd)(t) (-3.51 to 1.67). They probably formed through mixing of basaltic melts and the induced crustal melts. LA-ICP-MS U-Pb zircon ages of 250 and 305 Ma are obtained for the granite and granodiorite in the Chagangnuoer deposit, respectively, which are significantly younger than the timing of the skarn formation (316 Ma). These age data indicate that the granitoids have no contribution to the skarn and associated iron mineralization. This paper proposes a new genetic model for submarine volcanic rock-hosted skarn iron deposits, in which the iron mineralization, skarn formation and volcanic magmatism are necessary aspects of the same system; the iron separates and concentrates from the silicate magma in the form of Fe(II) carbonate complex. While this conceptual model is largely based on observations on the Chagangnuoer deposit, it may have general significance for skarn-type iron deposits associated with submarine volcanic rock sequences and warrants further testing and improvement.
关键词: Volcanic rocks-hosted skarn iron deposit ; Petrogenesis of ore-bearing andesitic rocks ; U-Pb zircon ages ; New genetic model
作者部门: [Sun, Wenli ; Ma, Yuxin ; Zhang, Guorui ; Hu, Zhenxing] Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Peoples R China ; [Sun, Wenli ; Niu, Yaoling ; Chen, Shuo ; Li, Jiyong ; Wang, Xiaohong ; Gong, Hongmei] Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China ; [Sun, Wenli] Gansu Ind Polytech Coll, Tianshui 741025, Peoples R China ; [Niu, Yaoling] Univ Durham, Dept Earth Sci, Durham DH1 3LE, England ; [Liu, Yi] China Univ Geosci, Beijing 100083, Peoples R China ; [Zhang, Zhaowei] Xian Ctr Geol Survey, Xian 710054, Peoples R China
通讯作者: Sun, WL (reprint author), Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Peoples R China.
学科分类: Science & Technology - Other Topics
文章类型: Article
所属项目编号: China Geological Survey Departments and Offices [1212011121092, 1212011220928]
语种: 英语
DOI: 10.1007/s11434-014-0684-9
ISSN号: 2095-9273
WOS记录号: WOS:000349445200009
CSCD记录号: CSCD:5386030
BIOSIS记录号: BCI:BCI201500233039
IR记录号: BCI:BCI201500233039
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/120667
Appears in Collections:地质科学与矿产资源学院_期刊论文

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Recommended Citation:
Sun, WL,Niu, YL,Ma, YX,et al. Petrogenesis of the Chagangnuoer deposit, NW China: a general model for submarine volcanic-hosted skarn iron deposits[J]. Science Bulletin,2015,60(3):363-379.
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