地震振动液化形变的研究

多种地质作用可造成年青的松散沉积物发生变形。为了判别沉积形变中的地震振动液化形变形迹,着重讨论了振动液化形成机制、形变几何形态特征以及它们与融冻变形和准同生变形构造的区别。认为振动液化形变形迹可以作为鉴别古地震标志之一。

STUDY ON THE DEFORMATION CAUSED BY SEISMIC VIBRATIONAL LIQUEFACTION

The late-formed loose deposits are liable to be distorted by the seve ral kinds of geological processes. The paper lays emphasis on the discussion of the formation machanism of seismic vibrational liquefaction, geometric feature of the deformation as well as the difference in the deformations caused by the freeze-thawing structures etc. The .vibration liquefaction trace can be regarded as one of the marks in identifying paleoearthquakes.