摘要
黔东南地区发育隔槽式褶皱组合和逆冲断层.通过对褶皱和地层的平面展布、断层的产状和性质以及滑脱层的分析,结合典型地震剖面解释和平衡剖面恢复,对黔东南地区构造特征及其成因进行了探讨.结果表明,隔槽式褶皱的发育不仅与滑脱深度和剥蚀差异有关,而且与逆冲断层的推覆距离、逆冲断层的产状、断坪断坡长度比、断层突破方式和多层次滑脱等方面存在着密切联系.结合区域构造演化和推覆距离的制约,建立了黔东南地区的隔槽式褶皱构造样式的几何学和运动学模型,确定其主要影响因素是断坪断坡长度比较小、多种方式断层突破和多层次滑脱.
The trough-like folds and thrust are well developed in Southeast Guizhou. The characteristics and origin of the structure in Southeast Guizhou are studied by analyzing the planar distribution of the folds and the strata, the nature and occurrence of the fault, the detachment beddings and the interpreted and restored seismic cross-sections. The results show that besides the depth of decollement and the denudation difference, the formation of the trough-like folds is also controlled by the distance from the nappe, the occurrence of the thrust, the length scale ratio of flat to ramp, the breakthrough ways of the fault and the multidecollement. Combining with the regional tectonic evolution and the nappe distance, the geometry and the kinematics models of the trough like folds structural style are established in Southeast Guizhou, which are mainly controlled by the minor scale of flat to ramp, various ways of thrust breakthrough and multi-decollement.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
2009年第6期907-913,共7页
Earth Science-Journal of China University of Geosciences
基金
国家"973"计划项目(No.2005CB422107)
国家自然科学基金项目(No.40672143)
关键词
隔槽式褶皱
断层突破
多层滑脱
构造
成因模式
黔东南地区
trough-like folds
thrust breakthrough
multi-decollement
tectonics
genetic model
Southeast Guizhou.
