CONTROLS OF NON-SYNDEPOSITIONAL FAULTS ON THE CHANGE IN THICKNESS OF STRATA ADJACENT TO FAULTS

This paper discusses the changes in thickness of strata adjacent to faults induced by non-syndepositional faulting according to outcrop-scale structural phenomena,geophysical maps,model experiments and domestic and foreign data. These changes are manifested by the following features:under the action of normal faulting the hanging wall thickens while the footwall thins,but under the action of reverse faulting the reverse is the case;in the case of a strike-slip fault,the thickening and thinning phenomena appear at the "slip-forward end" and "slip-apart end" respectively.This view has practical guidance significance for the petroleum,engineering and mineral prospecting sectors and also deepens the understanding in the theoretical study of structural geology.