726 FRANK CARNEY 
to the fact that but one section of this fold is exposed there is a possi- 
bility of some error in stating exactly the direction of the fold, but 
from careful study on the ground it seemed plausible that the plain 
shown in the view is parallel to the direction of ice-motion. If this 
fold were due to deep-seated stresses, the underlying formations would 
have suffered disturbance obviously, and since the fold is an over- 
Fic. 3.—Subjacent strata folded by glacier ice. Area shown is north of Moravia, 
INE 
turned anticline it seems impossible that any cause of this nature could 
have become operative without deforming the sandstone beneath. 
It is seen that Fig. 3 likewise shows the influence of ice-movements, 
but not the same type of ice-motion involved in the former case. The 
topographic map shows a considerable width of valley north of 
Moravia, a valley which flares northward opening on a fairly level 
plain within twelve miles. This position favored the expansion 
toward Moravia of a lobe of ice which had both linear and outward 
motions. The lateral flow of this tongue obviously produced the fold 
in question. Some six or seven other instances of similar folds were 
