BY A. N. LKWIS, M.C., LL.B. 37 



traced cii-cling the foot of Seaf{ei*'s Look Out and Mt. Mon- 

 ash at a point some half-mile south-east of the overflow of 

 Lake Fenton. The whole face of this cirque is now littered 

 with talus, and tremendous landslides of disintegrated dia- 

 base. The upper cirque is now filled by Lake Fenton, whose 

 depth of 90 feet in one part indicates the depth to which 

 this cirque has cut. 



While the second nivation layer was carving out the 

 floor of Lake Fenton, a small flow of ice moved down the 

 valley for half a mile or so, melting near the present edge 

 of the lake. This flow carried boulders, stones, and finer 

 debris, which it dropped where it was melting. Much of 

 this material probably came from the back of Seager's Look 

 Out and the side of Mt. Field East, and a little also from 

 the northern slopes of Mt. Monash. There were probably 

 two ice flows, one from each side of the valley, as there 

 is no catchment area to the north-west of the lake. 



While the ice was carrying these boulders down from 

 the neighbouring slopes, frost action was breaking down 

 the walls of the earlier cirque below. These walls were 

 covered with a broken wilderness of boulders tumbled down 

 in the greatest confusion. Over the top of this mass the 

 melting glacieret tumbled its load of clay and stones. The 

 moraine thus formed obviously rests at its lower extremity 

 on a talus of gigantic boulders, and by damming the valley 

 and the enlarged head of the cirque it impounds the water of 

 Lake Fenton. 



It is difficult to define the boundaries of this moraine. 

 At the edge of the lake the dam is undoubtedly a moraine, 

 with some huge boulders, several 20 feet in every dimen- 

 sion, many small stones, but a larger proportion of clay. 

 After a few hundred yards the boulders predominate, at 

 least, on the surface. This is probably due to the action 

 of rain on the edge of the slope washing away the smallei- 

 pai-ticles. A little farther down, and on a continuation of the 

 same slope, the ground is covered by talus. 



The side of Seager's Look Out has been subjected to 

 rock slides on a tremendous scaie at no very distant date, 

 and the process does not appear to be completed yet. The 

 old difl" walls of the cirque are rapidly disintegrating, and 

 much of the talus so formed has covei*ed the eastern edge 

 of the moraine. The western limit of the ice deposits is 

 undefinable on account of similar but less pronounced talus 

 falls from Mt. Monash. So the only definite morainal de- 

 posit is a triangular-shaped bed, as shown in the diagram 



