Art. V] 



Carney, Glacial Dam at Hanover. 



143 



C is the widest and presumably the deepest of these gaps. It 

 too is clogged with drift; when viewed from the moraine hills 

 north, the washplain origin of this aggraded deposit is evident. 

 Its southern margin, that is, its line of contact with the flood 

 plain area of the Licking valley, is sharply terraced, thus establish- 

 ing a neighboring base-level that has encouraged subaerial dis- 

 section ; as a result the washplain is somewhat roughened by the 

 work of streamlets. This gap, C, represents long-continued 

 lateral planation work of some stream, probably south-flowing; 

 its sides have mature slopes (Fig. 7) ; its aggraded bed has about 

 the same level as has the outwash plain reaching eastward in the 

 valley of the ancient Newark River. 



DISTRIBUTION AND DESCRIPTION OF THE DRIFT. 



The area within the broken line, "ice margin," (Fig. 3), in- 

 cludes the deposits of unmodified drift; within this area there is 

 also much washed drift, while outside the line we find only water- 

 laid deposits. 



Modified drift is found in all the valleys enumerated under the 

 preceding section of this paper. In portions of these valleys ad- 

 jacent to the ice front, the drift is of the outwash-plain type. 



Vig. "t. Lookinj; (lircrily ikm-iIi rlir(mi;ii gap i: . Caiufni f~laiuls on south wall 

 of the Licking about 180 feet above the stream. The sky-line of the middle 

 distance is the north wall of the old east-west (Newark) valley. 



