塔里木盆地东南缘新生代断裂、盆地演化研究及其对青藏高原北缘走滑边界扩展方式的启示

项目名称： 塔里木盆地东南缘新生代断裂、盆地演化研究及其对青藏高原北缘走滑边界扩展方式的启示

项目编号： No.41472181

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 天文学、地球科学

项目作者： 程晓敢

作者单位： 浙江大学

项目金额： 105万元

中文摘要： 塔里木盆地东南缘发育一个与阿尔金断裂平行的新生代盆地，其两大边界断层的发育和盆地的演化被认为与阿尔金断裂的活动有关，该盆地的研究对了解阿尔金断裂的活动历史及青藏高原北缘的扩展过程具有重要的科学意义。本申请将以大量的地震、非地震勘探与钻井资料为依托，综合地面地质调查、构造解析、热年代学分析和沉积学分析等方法，解剖塔里木东南缘新生代两大边界断层（车尔臣断裂和阿尔金北缘断裂）的几何学、运动学特征，厘定断裂性质、活动时间与期次以及两条断裂之间的关系；开展新生代沉积特征的研究，厘定沉积演化、沉积中心迁移和边界断层活动的联系；并将这些研究成果与阿尔金断裂新生代活动过程进行综合研究，确定车尔臣断裂和阿尔金北缘断裂在新生代青藏高原北缘扩展过程中所起的作用，建立塔里木盆地东南缘新生代盆地演化与阿尔金断裂活动的耦合关系，探讨阿尔金断裂和青藏高原北缘的扩展方式和过程。

中文关键词： 塔里木盆地东南缘；车尔臣断裂；阿尔金北缘断裂；新生代；扩展过程

英文摘要： The Cenozoic sedimentary basin, parallel to Altyn Fault, develops in southeastern of Tarim basin, the two boundary faults of which and their evolution have been considered to relate to the activity of the Altyn fault. Studies in this basin are significant in understanding both the active history of Altyn fault and the growth of Tibetan Plateau in its northern margins. This proposal, based on abundant seismic profiles, other geophysical data and borehole data, along with field geological investigation, and structural geological, thermochronological and sedimentological analyses, will determine the geometry and kinematics of Altyn and Cherchen faults (two boundary faults of the basin) to understand their active nature, timing, episodes and their relationship. Sedimentological study will focus on sediment sequence evolution, depocenter migration and their correlation with the activity of boundary faults. These results, combined with the active process of Altyn fault, will help to understand how the Cherchen and Altyn faults worked during the plateau growth in its northern margins, the coupling between the basin evolution and the activity of Altyn fault and to discuss the growth pattern and process of both the Altyn fault and Tibetan Plateau.

英文关键词： Southeastern Tarim Basin;Cherchen Fault;North Altyn Tagh Fault;Cenozic;Growth History