Folds and Folding

摘要: Some of the basic information related to development folds are provided, e.g. why, where, and how do they develop. Fold propagation fold geometries resulting from interference simultaneously developing described in two three dimensions along with causes noncylindricity. Variations geometry hinge line, depth axial surface shown by natural examples. Attention is drawn importance culmination point a line. Sheath eyed as separate entities formed different mechanisms. Late stages history explained using deformed physical models. Significance buckle shortening layer parallel strain across profiles highlighted. Development boudins, normal, thrust faults on limbs discussed. The sequence deformation suggests that second order should not be parasitic because term does have correct genetic implication. chapter highlights folding mountain building clear understanding early superposed can help resolving complete region.