3 . the variation of formation compression during uplift and degradation the uplift and denudation of basin have a greatly influence to the formation compression formed previously . the fashion of influence is related to the uniformity extent of degradation of the earth ' s surface 3盆地抬升剝蝕過程中地層壓力的變化盆地的抬升剝蝕對前期形成的地層壓力有重要的影響,影響的方式與地表剝蝕的均勻程度有關。