山西恒山南麓断层晚更新世后期以来活动状况研究

The Research of the Active Situation about the Fault of the Southern Foot of Hengshan Mountain, Shanxi Province since the Later State of the Late Pleistocene Epoch

本文根据在恒山南麓开挖的4个地质剖面的研究,确定了晚更新世后期以来恒山南麓断层至少有4次活动。距今3.316×10~4年以前有一次活动,第二次活动距今2.831×10~4年,第三次活动距今1.94×10~4年,最晚一次在距今0.445×10~4年。其中最大一次活动幅度为3.68m,最小一次活动幅度为0.35m。活动周期有长有短,长周期为1万余年,短周期为0.485×10~4年左右。

According to the research about the four geological sections unearthed at the southern foot of Hengshan mountain, we established that the fault of the southern foot of Hengshan mountain has moved at least four times since the later state of the late pleitocene epoch. There had been a movement before 3.316×104a BP., the second movement was 2.831×104a BP., the third movement was 1.94×104a BP., the latest was after 0.445×104a BP. The maximum active extent being was 3.68m, the minimum active extent being was 0.35m. There were long periods and short periods about active periods, the long period was more than ten thousands years,and the short period was around fourty-eight hundreds and fifty years.