i)Simple symmetrical fold
diagram:
-Formed when compressional forces of equal magnitude and of moderate strength act on crustal on crustal rocks
-The rocks bend evenly and the anticline is symmetrical about its axis
ii)An asymmetrical fold
diagram:
-Result from unequal compressional forces acting on crustal rocks
-One of the forces is slightly stronger than the other resulting to limbs that are asymmetrical about the axis