2. If both limbs of overturned fold have same dip angle , we call this special overturned fold isoclinal fold. 如果倒转褶皱构造的两翼倾角相等，则可称这种特殊类型的倒转褶皱为等斜褶皱。
3. In the inner part of the rock, we found that stratigraphic gap and inversion, and the fold-shapes show a series of pitching fold, appressed homoclinal fold and recumbent. 盖层内部地层缺失、倒置现象普遍，褶皱形态表现为一系列倾伏褶皱—紧密同斜褶皱—平卧褶皱，据其形态特征可辩出两期性质不同褶皱幕。
4. There are three basic type faults, that is, fault-propagation fold, fault-bending fold and detachment fold. All of them are important hydrocarbon traps. 断层传播褶皱、断层转折褶皱与滑脱褶皱共同构成了断层相关褶皱的三种基本类型，是重要的油气圈闭构造。
5. a sheath fold looks like a scabbard or human's tongue. Its fold axial plane or flattened plane is parallel to the foliation and there is strong stretching lineation on the sheath fold. 鞘褶皱看起来像一把鞘或是像人的舌头，它的褶皱轴面或压扁面是平行岩石中的片理面的，鞘褶皱上有强烈的拉伸线理。
