| 准噶尔盆地西北腹部燕山期构造活动与沉积响应 |
| |
| 引用本文： | 朱文,王任,鲁新川,石万忠,任梦怡,刘凯.准噶尔盆地西北腹部燕山期构造活动与沉积响应[J].地球科学,2021,46(5):1692-1709. |
| |
| 作者姓名： | 朱文 王任 鲁新川 石万忠 任梦怡 刘凯 |
| |
| 作者单位： | 1.中国石化石油勘探开发研究院, 北京 100083 |
| |
| 基金项目： | 中央高校基本科研业务费专项基金资助项目CUG200608 |
| |
| 摘 要： | 燕山运动是侏罗纪/白垩纪之交，区域规模和岩石圈尺度的重大构造运动.与中国东部地区相比，该运动在中国西部盆地的岩浆作用、构造事件动力学机制及其沉积响应等方面还存在诸多争议.利用碎屑锆石年代学和砂岩岩相学分析，对准噶尔盆地腹部石南地区的燕山期构造运动及盆地内的沉积响应进行分析，得到以下认识:（1）准噶尔盆地腹部侏罗纪-白垩纪同沉积期火山活动相关碎屑锆石是燕山期区域性火山活动的重要沉积响应.（2）准噶尔盆地燕山期发生强烈的陆内造山运动，盆地内构造单元发生相应的挤压变形.（3）准噶尔盆地内沉积体系对燕山期构造运动具有良好响应，白垩系底砾岩指示了盆地周缘造山带的快速隆升和盆地边界的萎缩.
|
| 关 键 词： | 准噶尔盆地 燕山运动 构造演化 沉积响应 盆山耦合 碎屑锆石年代学 构造地质学 |
| 收稿时间： | 2020-07-22 |
Yanshanian Tectonic Activities and Their Sedimentary Responses in Northwestern Junggar Basin |
| |
| Zhu Wen,Wang Ren,Lu Xinchuan,Shi Wanzhong,Ren Mengyi,Liu Kai.Yanshanian Tectonic Activities and Their Sedimentary Responses in Northwestern Junggar Basin[J].Earth Science-Journal of China University of Geosciences,2021,46(5):1692-1709. |
| |
| Authors: | Zhu Wen Wang Ren Lu Xinchuan Shi Wanzhong Ren Mengyi Liu Kai |
| |
| Abstract: | The Yanshanian movement was a major tectonic movement on a regional and lithospheric scale at the turn of the Jurassic to Cretaceous, which laid the foundation of tectonics in China. Compared with eastern China, there are still many controversies on the magmatism, tectonic dynamic mechanism and sedimentary response of the Yanshanian movement in the western China basin. In this study, the Yanshanian tectonic movement and sedimentary response of the basin are discussed based on the clastic zircon chronology and sandstone lithofacies of the Late Jurassic-Early Cretaceous sandstone samples in the Shinan area of the Junggar basin. The main conclusions can be drawn as follows. (1) Age of syndepositional volcanism recorded by the detrital zircons derived from magmatic rocks in the southern margin and northern part of the Junggar basin effectively indicates the existence of regional volcanism in the Late Jurassic-Early Cretaceous. (2) Intense intracontinental orogeny in the Yanshanian period led to extrusion deformation of tectonic units in the Junggar basin. (3) The sedimentary system had a good response to the Yanshanian tectonic movement. Cretaceous conglomerates indicate the rapid uplift of the orogenic belt around the basin and the shrinkage of the basin boundary. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
| 点击此处可从《地球科学》下载免费的PDF全文 |
