| 河西走廊榆木山边缘断层构造地貌研究 |
| |
| 引用本文： | 李有利,杨景春,李保俊,谭利华.河西走廊榆木山边缘断层构造地貌研究[J].地质力学学报,1997,3(4):20-26. |
| |
| 作者姓名： | 李有利 杨景春 李保俊 谭利华 |
| |
| 作者单位： | 北京大学城市与环境学系 |
| |
| 基金项目： | 国家自然科学基金(编号:49371012)资助项目 |
| |
| 摘 要： | 河西走廊位于青藏高原的东北部边缘,是青藏高原向东北推挤过程中形成的一个前陆盆地系。榆木山是位于河西走廊前陆盆地系中张掖盆地和酒东盆地之间的横向隆起山地。根据野外断层露头和地貌体的变形测量和分析,本文认为榆木山北缘断层是一条具有左旋位移的逆断层,东缘断层是一条具有右旋位移的逆断层,这两条断层在全新世期间都有明显的活动。榆木山的发育是沿着北缘断层和东缘断层的逆冲活动,造成山体内地块叠加变形的结果。
|
| 关 键 词： | 活动断层 构造地貌 榆木山 河西走廊 |
ON THE TECTONIC LANDFORM OF THE YUMU MOUNTAIN, HEXI CORRIDOR,GANSU PROVINCE |
| |
| Li Youli,Yang Jingchun,Li Baojun and Tan Lihua.ON THE TECTONIC LANDFORM OF THE YUMU MOUNTAIN, HEXI CORRIDOR,GANSU PROVINCE[J].Journal of Geomechanics,1997,3(4):20-26. |
| |
| Authors: | Li Youli Yang Jingchun Li Baojun and Tan Lihua |
| |
| Institution: | Department of Geography, Peking University |
| |
| Abstract: | The Hexi Corridor,located in the northeastern margin of the Qinghai-Tibetan plateau,is a foreland basin system formed by the northeastward push of the plateau.The Yumu mountain is a transverse highland between the Zhangye basin and Jiudong basin in the system.Based on the field study of fault outcrops and landform deformations,combining with TL and 14C ages,it is concluded that the north marginal fault of the Yumu mountain is a thrust with left-lateral slipping and the east marginal fault is a thrust with right-lateral slipping,and the Yumu Mountain developed from the resulting uplifting of the Yumu Mountain block along these faults. |
| |
| Keywords: | active fault tectonic landforms Yumu Mountain Hexi Corridor |
| 本文献已被 维普 等数据库收录！ |
| 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》下载免费的PDF全文 |
|
