SHRIMP zircon U-Pb geochronology of early Mesozoic felsic igneous rocks from the southern Lancangjiang and its tectonic implications
文献类型：期刊论文
| 作者 | Peng Touping; Wang Yuejun; Fan Weiming; Liu Dunyi; Shi Yuruo; Miao Laicheng |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2006-10-01 |
| 卷号 | 49期号:10页码:1032-1042 |
| 关键词 | SHRIMP zircon U-Pb dating Middle Triassic Lincang granitic batholith Manghuai Formation rhyolite southern Lancangjiang |
| ISSN号 | 1006-9313 |
| DOI | 10.1007/s11430-006-1032-y |
| 文献子类 | Article |
| 英文摘要 | The SHRIMP zircon U-Pb geochronology of three typical samples, including two monzonitic granites from the Lincang batholith and a rhyolite from the Manghuai Formation are presented in the southern Lancangjiang, western Yunnan Province. The analyses of zircons for the biotite monzonitic granites from the northern (02DX-137) and southern (20JH-10) Lincang batholith show the single and tight clusters on the concordia, and yield the weighted mean (206)Pb/(238)U ages of 229.4 +/- 3.0 Ma and 230.4 +/- 3.6 Ma, respectively, representing the crystallized ages of these granites. The zircons for the rhyolitic sample (02DX-95) from the Manghuai Formation give a weighted mean (206)Pb/(238)U age of 231.0 +/- 5.0 Ma. These data suggest that the igneous rocks from the Lincang granitic batholith and Manghuai Formation have a similar crystallized age. In combination with other data, it is inferred that both were generated at a narrow age span (similar to 230 Ma) and were originated from the postcollisional tectonic regime. An early Proterozo (206)Pb/(238)U apparent age of 1977 +/- 44 Ma is additionally obtained from one zircon from the biotite monzonitic granite (southern Lincang batholith), indicative of development of the early Proterozoic Yangtze basement in the region. These precisely geochronological data provide important constraints on better understanding the Paleozoic tectonic evolution of the Tethys, western Yunnan Province. |
| WOS关键词 | METAMORPHISM |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000242000600003 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/66358]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wang Yuejun |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Isotope Geochronol & Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Chinese Acad Geol Sci, SHRIMP Isotope Lab, Beijing 100037, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng Touping,Wang Yuejun,Fan Weiming,et al. SHRIMP zircon U-Pb geochronology of early Mesozoic felsic igneous rocks from the southern Lancangjiang and its tectonic implications[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49(10):1032-1042. |
| APA | Peng Touping,Wang Yuejun,Fan Weiming,Liu Dunyi,Shi Yuruo,&Miao Laicheng.(2006).SHRIMP zircon U-Pb geochronology of early Mesozoic felsic igneous rocks from the southern Lancangjiang and its tectonic implications.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49(10),1032-1042. |
| MLA | Peng Touping,et al."SHRIMP zircon U-Pb geochronology of early Mesozoic felsic igneous rocks from the southern Lancangjiang and its tectonic implications".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49.10(2006):1032-1042. |
入库方式： OAI收割
来源：地质与地球物理研究所
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