The characteristics and tectonic-metallogenic significances of the adakites in Yanshan period from eastern China
文献类型：期刊论文
| 作者 | Zhang, Q; Wang, Y; Qian, Q; Yang, JH; Wang, YL; Zhao, TP; Guo, GJ |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2001-04-01 |
| 卷号 | 17期号:2页码:236-244 |
| 关键词 | eastern China Yanshan period adakite lower crust tectonic significance metallogenesis |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Adakite is a suite of intermediate-acid igneous rocks characterized by HREE depletion and no obvious negative Eu anomaly, indicating the derivation from very deep source with garnet in the residue. A lot of Yanshanian intermediate-acid magmatic recks in eastern China have similar geochemical characteristics to the adakite, their formation environment however is unrelated to subduction process. In this paper, adakite is divided into two types: one is O-type adakite, which is characterized by Na enrichment and is related to subduction process; another is C-type adakite, which is enriched in II (most of them are still enriched in Na, a few K-enriched), is probably a product of partial melting of the lower-crust granulite in the thickened crust (> 50km) resulted from underplating of basaltic magma. The occurrence of C-type adakites in eastern China is indicative to the explanation of the geological phenomenon of Yanshanian magmatism. Because C-type adakite can preserve same imprints of the lower crust, it in turn can trace the composition of the lower crust and discuss metallogenesis related to the lower crust and crust-mantle process. |
| WOS关键词 | CONTINENTAL-CRUST ; ANDESITES ; MAGMAS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000168457600008 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/76861]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang, Q |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Q,Wang, Y,Qian, Q,et al. The characteristics and tectonic-metallogenic significances of the adakites in Yanshan period from eastern China[J]. ACTA PETROLOGICA SINICA,2001,17(2):236-244. |
| APA | Zhang, Q.,Wang, Y.,Qian, Q.,Yang, JH.,Wang, YL.,...&Guo, GJ.(2001).The characteristics and tectonic-metallogenic significances of the adakites in Yanshan period from eastern China.ACTA PETROLOGICA SINICA,17(2),236-244. |
| MLA | Zhang, Q,et al."The characteristics and tectonic-metallogenic significances of the adakites in Yanshan period from eastern China".ACTA PETROLOGICA SINICA 17.2(2001):236-244. |
入库方式： OAI收割
来源：地质与地球物理研究所
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