【摘要】 博格达山北麓活动推覆构造由3条活断层及2个活动背斜构成，其中的北三台活断层及阜康－吉木萨尔活断层与北三台背科及古牧地背斜紧密伴生，但后者部分切割背斜。活断层年代学研究表明，北三台活断层在9664±93a．B．P．后活动；阜康一吉木萨尔活断层在11108±103～14367±365a．B．P．间活动；博格达山北麓活断层在30588±553a．B．P．后活动，同北天山其它地区一样，山前活断层活动年代较新。活断层运动学特征表明，从山前往山里活断层的垂直活动速率逐渐增大，自北向南3条活断层的平均垂直活动速率分别为＞0．10±0．01、＞0．12及＞0．20mm／a。这和山区现代隆起强烈有关。更多还原

【Abstract】 he active nappe structure in northern apron of Bogeda mountain consists of 3 activefaults and 2 active anticlines,and of them Beisantai and Fukang -Jimusaer active faults closely associated with Beisantai and Gumudi anticlines, but the latter was cut partly by activefaults. Based on the studying of active fault chronology,Beisantai fault is active after 9 664 ±93 a. B. P.,Fukahg-Jimusaer fault during 11 108±103~ 14 367± 265 a. B. P. and the faultsof northern apron of Bogeda mountain after 30 588±553 a. B. P.. As same as other areas ofNorth Tianshan, the age of the piedmont fault is younger. The Kinetic characters of activefault indicated that the vertical rate increased gradually from piedment to mountain. Fromnorth to south, average vertical rates of 3 faults are more than 0. 10± 0. 01,more than 0. 12and more than 0. 20 mm/a separately. It is connected with recent rift of Bogeda mountain.Descriptors North Tianshan seismotectonic zone ;Active tectonic zone; Seismic risk evaluation ;Active fault更多还原