| Zircon U-Pb SHRIMP ages of high-pressure granulite in Yushugou ophiolitic terrane in southern Tianshan and their tectonic implications |
| |
| 作者姓名： | ZHOU Dingwu SU Li JIAN Ping WANG Runsan LIU Xiaoming LU Guanxiang & WANG Juli
Key Laboratory of Continental Dynamics of the Ministry of Education and |
| |
| 作者单位： | ZHOU Dingwu，SU Li，JIAN Ping，WANG Runsan，LIU Xiaoming，LU Guanxiang & WANG Juli
Key Laboratory of Continental Dynamics of the Ministry of Education and Department of Geology，Northwest University，Xi'an 710069，China
Beijing SHRIMP Center，Beijing 100037，China |
| |
| 摘 要： | Zircons from two high-pressure granulite samples from the Yushugou ophiolitic terrane, southern Tian shan have been investigated by cathodoluminescence, LA ICPMS and ion microprobe (SHRIMP) for their internal textures, trace elemental compositions and in situ dating. The weighted mean ages of these two samples are 392±7 and 390±11 Ma, respectively, representing the granulite-facies meta morphic age of the ophiolitic terrane, and indicating that the southern Tianshan ocean initiated its northward subduction since the early Devonian.
|
| 关 键 词： | 锆石 SHRIMP U-Pb 年代测定 高压麻粒岩 表面形态 天山 |
| 收稿时间： | 2004-03-13 |
| 修稿时间： | 2004-04-16 |
Zircon U-Pb SHRIMP ages of high-pressure granulite in Yushugou ophiolitic terrane in southern Tianshan and their tectonic implications |
| |
| ZHOU Dingwu,SU Li,JIAN Ping,WANG Runsan,LIU Xiaoming,LU Guanxiang & WANG Juli
Key Laboratory of Continental Dynamics of the Ministry of Education and.Zircon U-Pb SHRIMP ages of high-pressure granulite in Yushugou ophiolitic terrane in southern Tianshan and their tectonic implications[J].Chinese Science Bulletin,2004,49(13):1415-1419. |
| |
| Authors: | Zhou Dingwu Su Li Jian Ping Wang Runsan Liu Xiaoming Lu Guanxiang Wang Juli |
| |
| Institution: | (1) Key Laboratory of Continental Dynamics of the Ministry of Education and Department of Geology, Northwest University, 710069 Xi’an, China;(2) Beijing SHRIMP Center, 100037 Beijing, China |
| |
| Abstract: | Zircons from two high-pressure granulite samples from the Yushugou ophiolitic terrane, southern Tianshan have been investigated
by cathodoluminescence, LAICPMS and ion microprobe (SHRIMP) for their internal textures, trace elemental compositions and
in situ dating. The weighted mean ages of these two samples are 392 ±7 and 390 ±11 Ma, respectively, representing the granulite-facies
metamorphic age of the ophiolitic terrane, and indicating that the southern Tianshan ocean initiated its northward subduction
since the early Devonian. |
| |
| Keywords: | Yushugou ophiolite SHRIMP U-Pb dating granulite facies metamorphism southern Tianshan |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《中国科学通报(英文版)》浏览原始摘要信息 |
| 点击此处可从《中国科学通报(英文版)》下载免费的PDF全文 |
