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详细信息
- 责任者：Sun Xiaomeng (College of Earth Sciences ; Jilin University ; Changchun 130026 ; China) ; Du Jiyu
- 刊名：Journal of Jilin University
- 出版年：2010
- 卷期：40(6)
- 关键词：断层分段性 ; fault segmentation ; 龙门山断裂带 ; Longmenshan Fault Zone
- 页码：p.1323-1332
- 图表：illus., 1 table, 34 refs.
- 分类号：0300
- issnNo：ISSN1671-5888
- isbnNo：CN22-1343/P
摘要
According to the field measured geologic section and the geological survey as well as the different structural types of the different part within the thrust zone,the northern front range of Longmen Mountain thrust zone is divided into three tectonic sub-belts, Tangwangzhai-Yangtianwo klippe and gliding nappe tectonic subbelt, Louziba-Yanmenba-Majiaoba imbricate thrust subbelt and Kuangshanliang-Tianjingshan-Erlangmiao thrust and anticline subbelt, namely. Each has the different tectonically deformation. The klippe and gliding nappe tectonic subbelt is characterized by structural superimposition and tectonic evolution of nappe and addition gliding nappe. The thrust structure of the imbricate thrust subbelt is well developed, different systems, different formation in the same system as well as the different member in the same formation in the imbricate thrust subbelt thrusts from northwest to southeast, from older to younger in turn and forms the typical imbricate structural type. The thrust faults take on listric inclination westward and converge above the basal thrust plane of the thrust zone. There well developed fault-propagation folds in the structural rock fragments. These folds have almost the same axial strike and axial-plane occurrence as those faults in the imbricate thrust zone, and all fall toward foreland.