新疆塔城盆地断裂的晚第四纪活动特征  

CHARACTERISTICS OF LATE QUATERNARY FAULTS IN TACHENG BASIN,XINJIANG

作　　者：罗福忠[1] 姚远[1] 唐丽华[1] 葛鸣[1] 刘志坚[1] 

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《内陆地震》2015年第3期195-202,共8页Inland Earthquake

摘　　要：塔城盆地在大地构造上,位于哈萨克斯坦—准噶尔板块内,是西准噶尔山地的一山间盆地。在盆地周边及邻近地区主要分布有塔克台断裂、冬格列克断裂、裕民南断裂、巴尔鲁克山东缘断裂等。这些断裂在晚第四纪以来发生过显著的活动,断错了山前洪积扇和河流阶地及河漫滩,并形成连续分布的地表错动形变带。形变带主要由断层陡坎、断塞塘、挤压鼓包、沟槽等组成。经调查研究,形变带为古地震形变带。通过野外实地调查和大型探槽开挖及光释光年代测定,断裂在晚更新世或全新世时期发生过新活动及古地震。Tacheng basin was located in Kazakhstan-Junggar plate in West Junggar mountain. Taket- ai fault , Donggelieke fault , southern Yumin fault and eastern Baerluke fault were distributed a- round Tacheng basin. These faults had significant activities in Late Quaternary, thus piedmont allu- vial fan, fluvial terraces, floodplains, and continuous dislocation deformation zone surface formed. Deformation zone is mainly composed of fault scarp, sag ponds, extrusion bulging, trench. After in- vestigation, deformation band was paleoearthquake deformation belt. Stimulated by field investiga- tion, large trench excavation and thermoluminescence（TL） quake occurred in the epipleistocene or holocene. dating , fault activity and ancient earth-

关 键 词：塔城盆地 晚第四纪 活动断裂 古地震形变带 

分 类 号：P315.2[天文地球—地震学]