
doi: 10.3133/b1071c
_________________________________________________________ 69 Introduction. _____________________________________________________ 69 Stepped slopes in southern Nebraska, western Iowa, and northwestern Missouri____________________________________ 70 Hypotheses of origin.______________________________________________ 75 Slumping.____________________________________________________ 75 Subsidence__ ________________________________________________ 80 Scarp retreat________________________________________________ 81 Other hypotheses-_____________________________________________ 83 Role of steps in erosion and sediment yield-___^______________________ 84 References____________________________________________________ 84
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