SHRIMP zircon U-Pb dating in Jingshan "migmatitic granite", Bengbu and its geological significance
文献类型：期刊论文
| 作者 | Xu, WL; Wang, QH; Yang, DB; Liu, XC; Guo, JH |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2005-02-01 |
| 卷号 | 48期号:2页码:185-191 |
| 关键词 | Zircon U-pb Dating Migmatitic Granite Geological Significance Bengbu |
| ISSN号 | 1006-9313 |
| DOI | 10.1360/03yd0045 |
| 文献子类 | Article |
| 英文摘要 | The petrographic characteristics of Jingshan "migmatitic granite" and the occurrence of the magmatic zircons indicate that the granite was formed by normal crystallization of felsic melts. All zircons in the granite have inherited cores and fine-scale oscillatory zoning rims of magmatic origin. It is realized that the granite was formed at 160.2 +/- 1.3 Ma through dating magmatic zircons. The generation of the granitic magma could be related to the lithospheric mantle and/or lower crust delamination after the ultrahigh pressure metamorphism (UHPM) in Triassic. Most inherited zircons yield the ages of 217.1 +/- 6.6 Ma, which is consistent with the peak UHPM in the Dabie-Sulu orogenic belt. Some of the inherited zircons (433-722 Ma) constitute a discordia line with the upper intercept age of 850+85/-68 Ma and a lower intercept age of 261+100/-140 Ma. These ages imply that the granite could be derived from the partial melting of the crustal materials of the South China Block that was intensively superimposed by the UHPM. The UHPM could be the reason for the major Pb loss at +/- 220 Ma. |
| WOS关键词 | ULTRAHIGH-PRESSURE METAMORPHISM ; CENTRAL CHINA ; SOUTH-CHINA ; YANGTZE CRATONS ; EASTERN CHINA ; DABIE OROGEN ; COLLISION ; SULU ; MODEL ; LITHOSPHERE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000228190600005 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/64907]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu, WL |
| 作者单位 | 1.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China 2.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, WL,Wang, QH,Yang, DB,et al. SHRIMP zircon U-Pb dating in Jingshan "migmatitic granite", Bengbu and its geological significance[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2005,48(2):185-191. |
| APA | Xu, WL,Wang, QH,Yang, DB,Liu, XC,&Guo, JH.(2005).SHRIMP zircon U-Pb dating in Jingshan "migmatitic granite", Bengbu and its geological significance.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,48(2),185-191. |
| MLA | Xu, WL,et al."SHRIMP zircon U-Pb dating in Jingshan "migmatitic granite", Bengbu and its geological significance".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 48.2(2005):185-191. |
入库方式： OAI收割
来源：地质与地球物理研究所
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