EARTH238 Lecture Notes - Lecture 13: Diapir, Buckling

• School: University of Waterloo
• Department: Earth Sciences
• Course: EARTH238
• Professor: Shaun Frape

Document Summary

Fold interference patterns: drag fold, principal planes the shear stress is always zero. Buckling: a layer is shortened parallel to its length, cuspate-lobate fold. Weaker material deformed easily: bif- bended iron formation. Passive folding: flow of rocks (to accommodate changes in boundary. Neutral surface folding: top part of layer is extended and lower part shortened (horizontally, neutral surface line above which layers are extended and below are shortened. Flexural slip: no distortion on the planes, discrete layers stacked over each other.