北京永定河谷中元古界雾迷山组软沉积物变形与古地震发生频率
苏德辰1,2, 孙爱萍1,2

Soft-sediment deformation and occurrence frequency of palaeoearthquake in the Mesoproterozoic Wumishan Formation,Yongding River Valley,Beijing
Su Dechen1,2, Sun Aiping1,2
庄户洼河床剖面雾迷山组中的液化卷曲变形(类似的变形在雾迷山组白云岩中比较普遍,并且同一层位中这样的卷曲变形通常上强下弱,反映下部固结程度高、液化弱图)