Emplacement age and tectonic implications of the Xilinhot A-type granite in Inner Mongolia, China
文献类型：期刊论文
| 作者 | Shi, GH; Miao, LC; Zhang, FQ; Jian, P; Fan, WM; Liu, DY |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2004-04-01 |
| 卷号 | 49期号:7页码:723-729 |
| 关键词 | A-type Miarolitic Granite Shrimp Xilin Gol Inner Mongolia |
| ISSN号 | 1001-6538 |
| DOI | 10.1360/03wd0436 |
| 文献子类 | Article |
| 英文摘要 | A new rock type of granite, approximate 45 km(2) in area and located about 10 km south of Xilinhot, Inner Mongolia, was found in the Sunitezuoqi (or called Suzuoqi)-Xilinhot tectonic belt and identified as an A-type miarolitic intrusion. The pluton has miarolitic structure and is composed chiefly of perthite, quartz, euhedral albite and potassium feldspar. Various types of textures occur in the pluton, such as perthitie, graphic and myrmekite textures. Only quartz is found in miarolitic cavity. This A-type granite with seagull-shaped REE patterns and obvious negative Eu anomaly (deltaEu = 0.24-0.28) is high in SiO2 (76%-77%), K and Na (Na2O + K2O = 7.75%-8.15%) and low in Ca (CaO = 0.20%-0.22%), Fe and Mg. Both petrographical observations and chemical compositions indicate that it is an A-type granite. Zircon SHRIMP U-Pb analyses indicate that this A-type granite was emplaced at 276 +/- 2 Ma and coeval with the same type of granites in the adjacent areas. Therefore, it suggests that this pluton was likely formed in a post-orogenic extensional setting and probably related to break-off of subducted slabs in Central Asian Orogenic Belt (CAOB), which indicate that the Sunitezuoqi-Xilinhot belt was tectonically evolved into post-orogenic stage since early Permian. |
| WOS关键词 | MIAROLITIC ALKALINE GRANITE ; ZONE SOUTHERN ALPS ; GEOCHEMICAL CONSTRAINTS ; CRUSTAL GROWTH ; PETROGENESIS ; ORIGIN ; GEOCHRONOLOGY ; NIANZISHAN ; EVOLUTION ; AUSTRALIA |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000222338600015 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/64744]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Shi, GH |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Geol Sci, SHRIMP lab, Inst Geol, Beijing 100037, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, GH,Miao, LC,Zhang, FQ,et al. Emplacement age and tectonic implications of the Xilinhot A-type granite in Inner Mongolia, China[J]. CHINESE SCIENCE BULLETIN,2004,49(7):723-729. |
| APA | Shi, GH,Miao, LC,Zhang, FQ,Jian, P,Fan, WM,&Liu, DY.(2004).Emplacement age and tectonic implications of the Xilinhot A-type granite in Inner Mongolia, China.CHINESE SCIENCE BULLETIN,49(7),723-729. |
| MLA | Shi, GH,et al."Emplacement age and tectonic implications of the Xilinhot A-type granite in Inner Mongolia, China".CHINESE SCIENCE BULLETIN 49.7(2004):723-729. |
入库方式： OAI收割
来源：地质与地球物理研究所
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