地质科学Issue(3)：620-637,18.
米仓山构造转换带特征及转换模式
The characteristic and transfer model of Micang Mountain structural transfer zone
摘要
Abstract
Micang Mountain structure belt, locating between the NE-striking Longmen Mountain intracontinental composite orogenic belt and the NW-striking Daba Mountain foreland-thrust belt,forms a triangle structural zone,like Chinese eight,which is converge to north and diverge to south. Micang Mountain structure belt plays as an important structural transfer zone in adjusting structural balance between the Longmen Mountains intracontinental composite orogenic belt and the Daba Mountain foreland-thrust belt in the process of piggy-back deformation. Micang Mountain structural transfer zone can be divided to basement thrust-uplift zone,detachment deformation zone, northern Sichuan para-foreland zone, from north to south. Due to basement rock rigidity, basement thrust-uplift zone and northern Sichuan para-foreland zone have marked disparity in the process of adjusting structural balance. Brittle faults mainly took place at the basement thrust-uplift zone with the way of vertical uplift and horizontal contract to adjust structural balance. While northern Sichuan para-foreland zone, with weakly competent rock, mostly formed NW-and NW-striking folds and faults to adjust structural balance. Our research on structural feature of the Micang Mountain shows that, physical character of basement rock and pre-exist basement structure are the first-order factor of deformation diversity, and structure shrinkage and the contract ratio are subordination factor.关键词
构造转换带/转换模式/米仓山/龙门山/大巴山Key words
Structural transfer zone/ Transfer model/ Micang Mountain/ Longmen Mountain/ Daba Mountain分类
天文与地球科学引用本文复制引用
孙东,刘树根,李智武,孙玮,邓宾,钟勇,李金玺..米仓山构造转换带特征及转换模式[J].地质科学,2011,(3):620-637,18.基金项目
国家自然科学基金项目(编号:40802049)资助. （编号:40802049）
