题目内容
Fault gouge is very fine-grained, unconsolidated material consisting of pulverized rock fragments.
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A slickenside is a smooth, striated, polished surface and can be used to determine the direction and sense of motion on a fault.
A joint is a crack along which there has been no appreciable movement, while fault is a fracture with relative movement of the rocks on both sides of it, parallel to the fracture.
Folds can also be classified into non-plunging fold and plunging fold according to the orientation of hinges.
According to the relationship of the axial plane to the limbs, fold can be classified into:
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