秦皇岛市断裂断层泥的SEM特征与断裂活动性

THE SEM CHARACTERISTICS OF PUG IN FAULTS IN QINHUANGDAO CITY AND THE RUPTURE'S ACTIVITY

在野外地质调查的基础上，通过研究秦皇岛市Ｆ１、Ｆ２、Ｆ３断裂断层泥中石英颗粒表面的ＳＥＭ特征，认为Ｆ１断裂最末一次活动时间在早更新世至中更新世；Ｆ２断裂最末一次活动时间在晚更新世中晚期；Ｆ３断裂最末一次活动时间在晚更新世末或全新世初。

On the basis of field geological investigation, through studing the SEM characteristics of quarts grain from pug in faults F1,F2,F3 in Qinhuangdao city, it is considered that the latest active time of F1 fault was in early-mid Pleistocene,the latest active time of F2 fault was in middle-late period of late Pleistocene,and the latest active time of F3 fault was in the end of late Pleistocene or early Holocene.