| 对山西隆起区中新生代构造演化的认识 |
| |
| 作者姓名： | 魏荣珠 李好斌 徐朝雷 张兆琪 刘成如 |
| |
| 作者单位： | 1.山西省地质调查院，太原 030001；; 2.太原理工大学矿业工程学院，太原 030001；; 3.山西省区域地质调查队，榆次 030600 |
| |
| 基金项目： | 中国地质科学院地质研究所“山西区域地质调查片区总结与服务产品开发(编号: 121201102000150012-05)”项目资助 |
| |
| 摘 要： | 对山西隆起区中新生代构造演化的认识,是探讨华北陆块演化、破坏等科学问题的基础。在中新生代期间,不论是岩石圈的差异演化、构造体制转换、岩浆活动,还是地貌反转,位于华北陆块中心部位的山西地区总是处于过渡带的位置。该地理位置说明了该区在华北陆块演化研究中的重要性。在近年1∶5万、1∶25万区域地质调查成果及以往研究资料的基础上,以中生代区域性断裂、新生代汾渭裂谷及山体隆升为主要研究内容,探讨山西隆起区中新生代岩石圈从增厚到减薄、构造体制从挤压到伸展转换,以及随华北陆块一起经历地貌格局从东高西低到西高东低转换的构造演化进程。研究认为,山西地区中新生代构造体系的发育从属统一的区域动力学环境,周边板块之间的相互作用引起深部软流圈变化:软流圈下沉,岩石圈则相对增厚,地壳垂向伸展,横向收缩;软流圈上涌,岩石圈相应减薄,地壳水平伸展。软流圈的变化对该地区中新生代构造变形、沉积格局、岩浆活动等方面起着控制作用。
|
| 关 键 词： | 山西隆起区 离石断裂 太行山断裂 汾渭裂谷 中新生代构造演化 |
| 收稿时间： | 2016-06-16 |
Review on Meso-Cenozoic tectonic evolution in Shanxi uplift |
| |
| Authors: | WEI Rongzhu LI Haobin XU Chaolei ZHANG Zhaoqi LIU Chengru |
| |
| Institution: | 1. Shanxi Institute of Geological Survey, Taiyuan 030001, China; 2. College of Mining and Technology,Taiyuan University of Technology, Taiyuan 030001, China; 3. Regional Geological Survey Party,Shanxi Bureau of Geology and Mineral Exploration and Development, Yuci 030600, China |
| |
| Abstract: | The review about the Meso-Cenozoic tectonic evolution in Shanxi uplift is an important component for studying the North China Craton evolution and destruction process. The Shanxi area, in the center of North China Craton, is always in the transition zone whenever the lithosphere movement events like differential evolutions, tectonic transition, magmatic activity and physiognomy-reverse happen. This predominant location indicates the important significance of this area in North China Craton study. On the basis of the results of 1∶50 000 and 1∶250 000 geological surveys, the paper studys Mesozoic regional fracture, Cenozoic Fen-Wei rift valley and mountain uplift, analyze the following tectonic evolution processes: Mesozoic lithosphere in Shanxi uplift from thickening to thinning, the tectonic transition from compression to extension, and geomorphic pattern from “east-high, west-low” to “west-high, east-low”, and conclude that Meso-Cenozoic tectonic systems evolution is subjected to the uniform regional dynamic setting. The deep asthenosphere transformation is caused by the interaction between surrounding blocks. As asthenosphere sinks, lithosphere would become relatively thickening, and crust would extend in vertical and shrink in transverse. While asthenosphere upwells, lithosphere would become relatively thinning, and crust would extend in horizontal. Meso-Cenozoic tectonic deformation, sedimentary pattern and magmatic activity are controlled by asthenosphere transformation. |
| |
| Keywords: | Shanxi uplift Lishi fault Taihang Mountain fault Fen-Wei rift valley Meso-Cenozoic tectonic evolution |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《》浏览原始摘要信息 |
| 点击此处可从《》下载免费的PDF全文 |
|
