AUSTRALIAN GLACIATIONS 205 
on both sides of the hill, the striae in each case showing that the 
ice took a direct course over the ridge (see Fig. 6). The Bald 
Hills, which form the present water-parting between the two seas, 
were also overflowed by the ice-sheet. The summit and western 
side supply abundant evidences of this in ice-polished surfaces, 
glacial till, and large erratics. 
Fic. 6.—Very strongly glaciated Permo-Carboniferous pavement of siliceous 
quartzite, 9 feet by 3 feet, on the southern slope of Strangway’s Hill, Inman Valley. 
The striated floor, which is of unknown extent, is covered with bowlder clay, and the 
photographed portion was freshly uncovered by the writer. W. Howchin, photo. 
The morainic material originally filled up all the inequalities 
of surface, reaching up to the level of the plateau country, some 
1,500 feet above present sea level. This, with the 1,094 feet in 
the Kingscote bore near sea level, gives a total thickness for the 
glacial deposits of about 2,500 feet. If the trough-fault of Gulf 
St. Vincent extends to Kingscote, it is possible that these figures 
are too high, being exaggerated by such faulting. 
