GEOLOGY OF THE WEST POINT QUADRANGLE, NEW YORK 1 47 



The surface features of the area are therefore a combination 

 resulting from the influence of many factors, some structural and 

 petrographic represented by the different qualities of rock, some 

 epeirogenic represented by uplift and depression, and still others by 

 the very different effect of the agents, ice and water, under the chang- 

 ing limitations of different epochs. With the making of these forms 

 the geologic history of the West Point area touches the present time. 



