74 



THE PHYSIOGRAPHY OF CECIL COUNTY 



and Elk Xeck, thus bringing once more to the surface the older 

 underlying rocks. 



THE SUNDERLAND STAG-E. 



This period of emergence and erosion was brought to a close by a 

 partial subsidence of Cecil county. This subsidence may have been, 



Fig. 1. — Showing position of Sunderland shore-line. 



and probably was, accompanied by a slight tilting of the region to 

 the southeast. As the land went down the sea advanced both from 

 the Atlantic side and up the sinking valley of the Susquehanna river, 

 until it came to a standstill somewhere near the present location of 

 the Baltimore and Ohio Eailroad. When the sea had thus encroached 

 on the land the topography of Cecil county was very different from 

 what it is to-day. The accompanying diagram (Fig. 1) gives an 



