文档介绍：Review of folds
inter-limb angle
Geometric elements of folds
Axis , axial plane and axial surface
D. Anticline, fold faces upwards syncline, fold faces downwards. F. refolded recumbent anticline
Classification of folds based on the inter-limb angle
Detachment zone
Markedly asymmetric chevron with a very long
limb and a very short limb
The band is the zone in which mon short straight limb
bounded by the two adjacent fold surfaces
Symmetric and asymmetric folds
Symmetric folds with limbs of equal length. Asymmetric folds with
Limbs of unequal length
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