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| 西南天山明尧勒背斜的第四纪滑脱褶皱作用 | |
| 引用本文： | 陈杰,Scharer K M,Burbank D W,Heermance R,王昌盛.西南天山明尧勒背斜的第四纪滑脱褶皱作用[J].地震地质,2005,27(4):530-547. |
| 作者姓名： | 陈杰 Scharer K M Burbank D W Heermance R 王昌盛 |
| 作者单位： | 1. 中国地震局地质研究所,地震动力学国家重点实验室,北京,100029 2. Department of Geological Sciences, University of Oregon, Eugene, OR 97403, USA 3. Department of Geological Sciences, University of California, Santa Barbara, CA 93106, USA |
| 基金项目： | 中国科学院资助项目;地震科学联合基金 |
| 摘 要： | 通过对明尧勒活动背斜喀浪勾律克河剖面生长前地层和翼部生长地层几何结构的填图以及变形河流阶地的系统测量,结合磁性地层及释光年代学研究,认为该背斜的滑脱褶皱作用起始于距今约1·6Ma,其总体几何结构形成于褶皱作用的早期,但其生长扩展并不完全遵从自相似性特征。持续的缩短作用部分被褶皱翼部陡倾膝折带的加长所吸收(由此导致背斜波幅的增加),另一部分可能是通过不同时期褶皱翼部不同膝折带组的旋转和迁移来实现的。明尧勒背斜的持续构造抬升是背斜区河流下切形成多级基座阶地的主因。晚第四纪褶皱的生长以背斜的垂直抬升为主,主要集中在北翼近核部,背斜宽度变化不大。背斜不同时期的抬升量和抬升速率均大于其缩短量和缩短速率,表明明尧勒背斜的变形以翼旋转为主(Pobletet al.,1996)。背斜自形成以来缩短速率和抬升速率均有减小的趋势 |
| 关 键 词： | 天山 滑脱褶皱 生长地层 磁性地层 河流阶地 翼旋转 膝折带迁移 |
| 文章编号： | 0253-4967（2005）04-0530-18 |
| 收稿时间： | 2005-12-13 |
| 修稿时间： | 2005-12-16 |
QUATERNARY DETACHMENT FOLDING OF THE MINGYAOLE ANTICLINE,SOUTHWESTERN TIAN SHAN |
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| CHEN Jie,Scharer K M,Burbank D W,Heermance R,WANG Chang-sheng.QUATERNARY DETACHMENT FOLDING OF THE MINGYAOLE ANTICLINE,SOUTHWESTERN TIAN SHAN[J].Seismology and Geology,2005,27(4):530-547. | |
| Authors: | CHEN Jie Scharer K M Burbank D W Heermance R WANG Chang-sheng |
| Institution: | 1 State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China ;2 Department of Geological Sciences, University of Oregon, Eugene, OR 97403, USA; 3 |
| Abstract: | The preservation of multiple, clearly deformed Late Quaternary fluvial terraces and nearly continuous exposure of underlying Neogene sediments make the Mingyaole anticline detachment fold system particularly favorable for unraveling the geomorphic and structural history of underlying fold growth within the southwestern Chinese Tian Shan Foreland Basin. We mapped the Neogene structure and Pleistocene terrace surfaces along the south-flowing Kalanggouluke He within water gap across the anticline using 1 ∶ 50 |
| Keywords: | Tian Shan detachment fold growth strata magnetostratigraphy strath terrace limbrotation hinge migration |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |