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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
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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
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Su Dechen 1,2, Sun Aiping 1,2
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庄户洼河床剖面下部( 图3 -B)硅化层的挤入构造及其附近的软沉积物变形构造(镜头向西,注意图中硅结壳层2的顶底面呈波状起伏并含有较多的白云岩角砾;变形5(紧密褶皱)和6(褶皱—板刺状角砾)表明该层遭受挤压应力;1和3为硅化白云岩层的挤入构造) |
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