|
|||||
|
|
| 西南天山柯坪地区萨尔干基性岩脉U-Pb年代学及地球化学特征 | |
| 引用本文： | 霍海龙,陈正乐,陈贵民,张青,韩凤彬,张文高. 西南天山柯坪地区萨尔干基性岩脉U-Pb年代学及地球化学特征[J]. 地质力学学报, 2019, 25(S1): 60-65 |
| 作者姓名： | 霍海龙 陈正乐 陈贵民 张青 韩凤彬 张文高 |
| 作者单位： | 中国地质科学院地质力学研究所, 北京 100081,中国地质科学院地质力学研究所, 北京 100081;东华理工大学地球科学学院, 江西 南昌 330013,新疆维吾尔自治区地质矿产勘查开发局第六地质大队, 新疆 哈密 839000,中国地质科学院地质力学研究所, 北京 100081,中国地质科学院地质力学研究所, 北京 100081,中国地质科学院地质力学研究所, 北京 100081 |
| 基金项目： | 国家自然科学基金项目（U1403292，41502085，41472196）。国家科技支撑计划项目（2015BAB05B04） |
| 摘 要： | 柯坪地区发育一套沿走滑断层侵位的萨尔干基性岩脉，其产出于西南天山造山带与塔里木克拉通的接触部位，具有重要的意义。文章通过对萨尔干基性岩脉样品进行锆石LA-ICP-MS U-Pb年代学、岩石地球化学分析，探讨西南天山中新生代陆内造山作用过程。结果表明，萨尔干基性岩脉的LA-ICP-MS锆石U-Pb年龄为（49.14±0.8） Ma，表明该套岩石形成于始新世。地球化学表明该套岩石形成于与青藏高原碰撞远程效应相关的构造背景。 |
| 关 键 词： | 西南天山 柯坪 U-Pb年代学 萨尔干地区 基性岩 |
THE U-PB GEOCHRONOLOGY AND GEOCHEMICAL CHARACTERISTICS OF THE SAERGAN MAFIC ROCKS IN THE KEPING AREA, SOUTHWEST TIANSHAN, CHINA |
|
| HUO Hailong,CHEN Zhengle,CHEN Guimin,ZHANG Qing,HAN Fengbin and ZHANG Wengao. THE U-PB GEOCHRONOLOGY AND GEOCHEMICAL CHARACTERISTICS OF THE SAERGAN MAFIC ROCKS IN THE KEPING AREA, SOUTHWEST TIANSHAN, CHINA[J]. Journal of Geomechanics, 2019, 25(S1): 60-65 | |
| Authors: | HUO Hailong CHEN Zhengle CHEN Guimin ZHANG Qing HAN Fengbin ZHANG Wengao |
| Affiliation: | Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China,Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;School of Earth Science, East China University of Technology, Nanchang 330013, Jiangxi, China,No.6 Geological Survey Team,Bureau of Xinjiang Geology and Mineral Resources Development, Hami 839000, Xinjiang, China,Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China,Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China and Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China |
| Abstract: | There is a set of mafic rocks developed along the Saergan strike-slip faults in the Keping area, which is of great significance to understanding the internal relations between the southwest Tianshan orogenic belt and the Tarim Craton. The zircon U-Pb geochronology and geochemical analysis of the Saergan Mafic rocks are used to investigate the effect of the Cenozoic intracontinental orogeny process of the Southwest Tianshan orogenic belt. The zircon LA-ICP-MS U-Pb age of the Saergan mafic rock is 49.14±0.8 Ma, indicating that the mafic rocks were formed in Eocene. Geochemistry data shows that the rocks have an important relationship with the remote effects of the collision between the Indian plate and the Eurasian plate. |
| Keywords: | southwest Tianshan Keping U-Pb chronology Saergan area mafic rocks |
| 点击此处可从《地质力学学报》浏览原始摘要信息 | |
| 点击此处可从《地质力学学报》下载全文 | |