Complex sentence: Therefore, forced folds are controlled by the fault structure in the basement rocks along planar or listric fault surface and folding of the overlying sedimentary cover only acts as a reaction to underlying fault structure.
Split into simpler sentences: Therefore, forced folds are controlled by the fault structure in the basement rocks along planar or listric fault surfaces. Folding of the overlying sedimentary cover acts as a reaction to the underlying fault structure.