Geochronology and geochemistry of the Daolanghuduge A-type granite in Inner Mongolia, and its geological significance.
文献类型：期刊论文
| 作者 | Xie HongJing1,2; Wu Guang3; Zhu MingTian4; Liu Jun3; Zhang LianChang4 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2012-02-01 |
| 卷号 | 28期号:2页码:483-494 |
| 关键词 | A-type granite Zircon SHRIMP U-Pb age Geochemistry Daolanghuduge intrusion Inner Mongolia |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The K-feldspar granite intrusion from Daolanghuduge, Inner Mongolia, is located in the Bainaimiao arc of the northern margin of the North China Craton (NCC). The SHRIMP analyses of zircons from the intrusion yield a weighted mean Pb-206/U-238 age of 139. 6 +/- 1. 7Ma. The intrusion is characterized by high SiO2 contents (75. 79% similar to 78. 07%), high alkali contents (K2O + Na2O = 7. 39% similar to 8. 29%) but low CaO contents (0. 22% similar to 0. 59%). The K-feldspar granite is marked by a "sea-gull" pattern of REE distribution with delta Eu ranging from 0. 03 to 0. 12, showing a relatively significant negative Eu anomaly. These rocks are enriched in Ga (21.2 x 10(-6) similar to 26.6 x 10(-6)), Zr (173 x 10(-6) similar to 417 x 10(-6)), Nb (32.3 x 10(-6) similar to 42.4 x 10(-6)) and Y (24.6 x 10(-6) similar to 53.9 x 10(-6)) but depleted in Sr (14 x 10(-6) similar to 44 x 10(-6)) and Ba contents (18 x 10(-6) similar to 211 x 10(-6), and exhibit remarkably negative Ba, Sr, P, Eu and Ti anomalies on the primitive mantle-normalized trace element diagram. All these characteristics resemble A-type granites which originated from the partial melting of felsic crust under high temperature and low pressure conditions and the subsequent fractional crystallization of feldspar, titanite, etc. Combined with regional tectonic evolution, we suggest that the K-feldspar granite formed in an intraplate extensional setting. The northern margin of the NCC went through a transitional tectonic regime front compression to extension during Late Mesozoic. Under this tectonic regime, the upwelling asthenosphere provided enhanced heat flux and triggered the partial melting of the overlying felsic crust and then produced the Daolanghuduge K-feldspar granite intrusion. |
| WOS关键词 | NORTH CHINA CRATON ; METAMORPHIC CORE COMPLEX ; PERIDOTITE-MELT REACTION ; ASIAN OROGENIC BELT ; TECTONIC IMPLICATIONS ; LITHOSPHERIC MANTLE ; SOUTHEASTERN AUSTRALIA ; TEMPORAL EVOLUTION ; CONTINENTAL GROWTH ; METALLOGENIC BELT |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000301991500011 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84488]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xie HongJing |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie HongJing,Wu Guang,Zhu MingTian,et al. Geochronology and geochemistry of the Daolanghuduge A-type granite in Inner Mongolia, and its geological significance.[J]. ACTA PETROLOGICA SINICA,2012,28(2):483-494. |
| APA | Xie HongJing,Wu Guang,Zhu MingTian,Liu Jun,&Zhang LianChang.(2012).Geochronology and geochemistry of the Daolanghuduge A-type granite in Inner Mongolia, and its geological significance..ACTA PETROLOGICA SINICA,28(2),483-494. |
| MLA | Xie HongJing,et al."Geochronology and geochemistry of the Daolanghuduge A-type granite in Inner Mongolia, and its geological significance.".ACTA PETROLOGICA SINICA 28.2(2012):483-494. |
入库方式： OAI收割
来源：地质与地球物理研究所
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