HONEYMAN GEOLOGY OF ANT1GONISI1E COUNTY. 79 



TRANSPORTATION. 



Post pliocene. 



Drift accumulations abound throughout the county. The trans- 

 portation of the boulders at Ogden's (vide shore section continued) 

 from the Lower Arisaig series of the shore section, is in the 

 direction S. 30° E. No glaciation has been observed in the county. 



The drift material is to be regarded as to a large extent the 

 product of the action of subaerial agencies, that were at work as 

 now denuding the various formations in the tertiary period, addi- 

 tions being made, and the transportation being effected by special 

 agencies at work during the post tertiary (post pliocene) period, 

 e. g. ice agency. Large masses have been transported from 

 Frenchman's Barn (rock) and Arisaig pier of the same section, to 

 elevated positions on the south. 



Recent. 



The ice in the Gulf of St. Lawrence often takes up rock masses 

 and distributes them along the shore. Numerous examples can be 

 pointed out, illustrating this statement, where carboniferous and 

 other rocks have been taken from their original position some miles 

 distant, and landed on the shore among Arisaig rocks. 



A notable instance of ice transportation occured a winter or two 

 ago, when a large addition to Arisaig pier (wooden) with its 

 ballast, was lifted up and landed in the middle of the cove some 

 distance to the south of the pier. This mode of transportation has 

 doubtless been in operation all along the northern shore of Nova 

 Scotia, since the post pliocene period, and it has yet to be proved 

 that the same process was not in operation prior to that period. 

 This may be one reason why rock masses may often be found in 

 the drift out of the regular course of post pliocene transportation. 



{To be continued.} 



