具丘状、洼状交错层理或平行层理的砂岩；
B. sandstone with hummocky or sunken cross bedding and parallel bedding;
粒序层理、块状层理、平行层理、交错层理、波状层理十分发育；
Depositional beddings such as graded bedding, massive bedding, parallel bedding, cross-bedding and wave bedding, are well developed;
一个平行于机械软弱层或层理断层面，它把其上未形变的岩石或其下不同形变的岩石拆离或分隔开。
A fault surface parallel to a mechanically weak horizon or layer, or parallel to bedding, that detaches or separates deformed rocks above from undeformed or differently deformed rocks below.
垂直于层理方向上的渗透系数大于平行于层理方向上的渗透系数。
The permeability coefficient on the direction vertical to the bedding plane is larger than that on the direction parallel to the bedding plane.
垂直于层理方向上的渗透系数大于平行于层理方向上的渗透系数。
The permeability coefficient on the direction vertical to the bedding plane is larger than that on the direction parallel to the bedding plane.
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