顶 印模 波峰 波谷 图2-5波痕及其印模 图2-6泥裂的立体示意图 (据R.R. Shrock,1948) (据R.R. Shrock,1948) Ripple mark and its Mud cracks Mold The sharp ends of the Wave crest points to the top wedge points to the and wave trough points to bottom of the bed the bottom of the bedRipple Mark and its Mold Wave crest points to the top and wave trough points to the bottom of the bed Mud Cracks The sharp ends of the wedge points to the bottom of the bed