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W. G. WOOLNOUGH. 



magnificent peak of Toolbrunup are very similar to those 

 just described. Here again quartzites are considerably 

 more abundant than phyllites. Ripple marking and false 

 bedding are very pronounced. To the south-east of the 

 main peak, and on the opposite side of the gorge the dip of 

 the current beds is south 29° east at 24°. 



Near the 26 mile post on the northern road there is a 

 mass of pink vitreous quartzite differing very much in 

 appearance from the normal quartzites of the range. This 

 outcrop lies at the extreme northerly limit of the foothills 

 and just on the edge of the plains. In its isolated position 

 its relationships are not very clear. In general appearance, 

 however, it is somewhat similar to one of the rocks at the 

 Slate Quarry (to be described later), which occur under 

 such conditions as to leave no doubt as to their formation 

 as a result of contact metamorphism of the Stirling Range 

 quartzite by the granite. While the evidence is not at all 

 conclusive, the occurrence in question suggests the possi- 

 bility of an igneous contact at the 26 mile post. 



Amongst the rocks which form the very rugged summit 

 of Talyuberlup phyllite and quartzite occur in about equal 

 proportions. The former are very wavy and even the 

 quartzites are gently undulating. While ripple marks can 

 be traced in the latter rocks, they are by no means so 

 pronounced as in some of the outcrops further to the east. 

 False bedding, however, is just as well defined, the laminae 

 dipping south 18° west at 35°, a direction very markedly 

 different from the general trend of the inclination in other 

 cases. The rocks are very much injected by lenses of 

 quartz, mostly of very small size, very few of which exceed 

 three feet in length. In the foothills immediately to the 

 south the rocks appear to be mostly phyllitic with only 

 occasional quartzite bands. The southern summit of Mount 

 Magog is composed chiefly of quartzite which is perfectly 

 ripple marked. 



