214 N. M. FENNEMAN — EFFECT OF CLIFF EROSION ON FORM 



If the last land to be submerged were an undissected plain, it would 

 be narrowed by cliff-cutting at an increasingly rapid rate as the height 

 of the cliffs was lost. If the last remnant be cut by valleys, continued 

 submergence must subdivide it into islands, the story of each one of 

 which will reproduce, in a manner, that of the entire land mass. 



In actual experience it may be expected that a large part of all cases 

 of submergence will be found to begin with well developed cliffs cut 

 while the land was standing still. The height of these may not be 

 greatly increased during the migration of the coast. In such cases the 

 initial stages of the process represented by figure 4 are omitted. 



