334 E. M.KIKDLE DEFORMATION IN NOVA SCOTIA AND ONTARIO 



before breaking up into bergs were unquestionably efficient agents in 

 plowing up the bottom sands and clays and doubtless produced many 

 examples of disturbed bedding comparable with that shown in figure 8. 

 The entire competence of ice, acting either as grounded fields or as 

 tongues of glacial ice, to produce tlie disturbed ])edding seen in the Lake 

 Erie section west of Port Burwell, together with the great thickness and 

 extent of the ice-fields which must have characterized the surface of Lake 

 Erie during an early stage of its history, appear to Justify the reference 

 of this phenomenon to ice-action. 



