片理（劈理）为早世代挤压-剪切褶皱的轴面片理，又成为晚世代弯滑褶皱的滑动面；
The cleavage and schistosity acted as an axial plane role in the early generation of compressed shear fold, and changed into a slip plane in the later generation of flexural slip fold.
伊通地堑是一个主体在海西期褶皱基底上发育起来的第三纪含油气走滑断陷盆地。
The Yitong Graben is a Tertiary petroliferous strike-slip fault basin developed on the Hercynian fold basement.
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