Review of folds
Review of folds
转折 面 A 拐 转折端 槽线 Geometric elements of folds inter-limb angle A.翼邵平直的稻皱的翼问角;以.弧形稻皱的翼闻角
Geometric elements of folds inter-limb angle
hinge lines axIs axial plane axial surface B (imaginary) Axis, axial plane and axial surface
Axis , axial plane and axial surface
A antiform B synform C neutral fold younger older(core) older younger(core) axial surface of anticline D. Anticline, fold faces upwards E antiformal syncline, fold faces downwards. F refolded recumbent anticline
D. Anticline, fold faces upwards E.antiformal syncline, fold faces downwards. F. refolded recumbent anticline
axial plane C overfold A upright B inclined crest hinges D recumbent trough E
-180 120 Classification of folds based on the inter-limb angle
Classification of folds based on the inter-limb angle
72
Detachment zone
Detachment zone
The band is the zone in which the common short straight limb bounded by the two adjacent fold surfaces Markedly asymmetric chevron with a very long limb and a very short limb
Markedly asymmetric chevron with a very long limb and a very short limb The band is the zone in which the common short straight limb bounded by the two adjacent fold surfaces
A symmetric S B asymmetric Symmetric and asymmetric folds Symmetric folds with limbs of equal length. Asymmetric folds with Limbs of unequal length
Symmetric and asymmetric folds Symmetric folds with limbs of equal length. Asymmetric folds with Limbs of unequal length N S