Geochemistry study and tectonic background of A style host granite in Nianzigou molybdenum deposit in Xilamulun molybdenum metallogenic belt, Inner Mongolia
文献类型：期刊论文
| 作者 | Chen ZhiGuang1,2; Zhang LianChang1; Wu HuaYing1,2; Wan Bo1,2; Zeng QingDong1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2008-04-01 |
| 卷号 | 24期号:4页码:879-889 |
| 关键词 | A-type granite isotopic geochemistry post-collision orogeny middle Jurassic Xilamulun molybdenum metallogenic belt |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Located in the middle segment of the northern margin of North China Craton, the host-granite of Nianzigou molybdenum deposit is a typical Mesozoic A-type granite. Rb-Sr isotopic dating yields an age of 167 +/- 2Ma (MSWD = 1.3), indicating that the host-granite was intruded in middle Jurassic. Geochemically, the host-granites of Nianzigou molybdenum deposit are rich in silicon, alkalis, aluminum, poor in calcium, magnesium and total iron, and show enrichment of Rb, Ba, Tb, K and depletions of P, Ti, Ta Nb. They also have LREE enrichment, and europium depletion (delta Eu = 0.60 - 0.68). The characteristics of Sr-Nd isotope are relatively low initial Sr-87/Sr-86 values (0.70516 similar to 0.70519) and negative epsilon(Nd) (t) values (-3.8 similar to 7.4), which indicate that the host-granites show more characteristics of the old crust mixed with the mantle materials in their source rocks. The ranges of Pb-206/Pb-204 (17.67 similar to 17.92), Pb-207/Pb-204 (15.39 similar to 15.41) and Pb-201/Pb-214 (38.05 similar to 38.83) of host-granites show components of lower continental crust. Compared with the other Mesozoic A-type granites in the northern marginal region of North China Craton and northeastern of China, we suggest that above granites have the same geochemical characteristics, same tectonic setting, and the host-granite was formed in the post-collision stage. |
| WOS关键词 | A-TYPE GRANITES ; NORTHEASTERN CHINA ; CRUSTAL GROWTH ; DELAMINATION ; CONSTRAINTS ; MAGMATISM ; PETROGENESIS ; EVOLUTION ; DISCRIMINATION ; GEODYNAMICS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000256696700026 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/69020]  |
| 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, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen ZhiGuang,Zhang LianChang,Wu HuaYing,et al. Geochemistry study and tectonic background of A style host granite in Nianzigou molybdenum deposit in Xilamulun molybdenum metallogenic belt, Inner Mongolia[J]. ACTA PETROLOGICA SINICA,2008,24(4):879-889. |
| APA | Chen ZhiGuang,Zhang LianChang,Wu HuaYing,Wan Bo,&Zeng QingDong.(2008).Geochemistry study and tectonic background of A style host granite in Nianzigou molybdenum deposit in Xilamulun molybdenum metallogenic belt, Inner Mongolia.ACTA PETROLOGICA SINICA,24(4),879-889. |
| MLA | Chen ZhiGuang,et al."Geochemistry study and tectonic background of A style host granite in Nianzigou molybdenum deposit in Xilamulun molybdenum metallogenic belt, Inner Mongolia".ACTA PETROLOGICA SINICA 24.4(2008):879-889. |
入库方式： OAI收割
来源：地质与地球物理研究所
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