| Petrogenesis of the Chagangnuoer deposit, NW China: a general model for submarine volcanic-hosted skarn iron deposits | |
Sun, Wenli1,2,3; Niu, Yaoling2,4; Ma, Yuxin1; Liu, Yi5; Zhang, Guorui1; Hu, Zhenxing1; Zhang, Zhaowei6; Chen, Shuo2; Li, Jiyong2 ; Wang, Xiaohong2; Gong, Hongmei2
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| 2015-02-01 | |
| 发表期刊 | SCIENCE BULLETIN
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| 卷号 | 60期号:3页码:363-379 |
| 文章类型 | Article |
| 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 |
| DOI | 10.1007/s11434-014-0684-9 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000349445200009 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/25356 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Gansu Ind Polytech Coll, Tianshui 741025, Peoples R China 4.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England 5.China Univ Geosci, Beijing 100083, Peoples R China 6.Xian Ctr Geol Survey, Xian 710054, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Sun, Wenli,Niu, Yaoling,Ma, Yuxin,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. |
| APA | Sun, Wenli.,Niu, Yaoling.,Ma, Yuxin.,Liu, Yi.,Zhang, Guorui.,...&Gong, Hongmei.(2015).Petrogenesis of the Chagangnuoer deposit, NW China: a general model for submarine volcanic-hosted skarn iron deposits.SCIENCE BULLETIN,60(3),363-379. |
| MLA | Sun, Wenli,et al."Petrogenesis of the Chagangnuoer deposit, NW China: a general model for submarine volcanic-hosted skarn iron deposits".SCIENCE BULLETIN 60.3(2015):363-379. |
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