Physiography of Western Portion Croajingolong. 105 



glonierates are lithologically similar to certain beds lying at 

 the base of the middle Devonian elsewhere, as at Bendi ;* 

 and also to some outliers at Giblo River f They may, 1 

 think, be provisionally classed as upper Silurian. 



Devonian. 

 On the divide between the Bemm and Cann, the eastern 

 watershed of the Combinebar Creek, and at Buldah, are 

 masses of quartzose conglomerate and red sandstones, pre- 

 senting in places a low angle of dip 80° to 60°, presenting 

 similar features to the Devonian sandstones and conglom- 

 erates of Mount Tambo-i They are certainly stratigraphically 

 superior to the slates and sandstones of the Yalma and 

 Bendoc, and may be provisionally classed as Devonian. 

 Like the former, they have been subjected to the indurating 

 effects of adjacent granite masses occupying the lower part 

 of the Cann valley. The sandstones being convei'ted into 

 quartzites, and the conglomerates into porphyries or por- 

 phyritic conglomerate, I cannot assign any age to these 

 masses ; they may represent upper Devonian. Ail that can 

 be safely said in the absence of fossils is, that they are 

 younger than any members of the upper Silurian, and are 

 overlaid further to the east by what appears to be an outlier 

 of carboniferous sandstone. The latter will be referred to 

 in a subsequent paper on the " Physiography of the Eastern 

 Portion of the County of Croajingolong," for which I am 

 preparing data. 



Plutonic. 

 From the Cabanandara valley, and also at Bonang and the 

 Delegate River north of the coast range, a mass of granite 

 stretches through the centre of the county to the Cann 

 River at Morgan's homestead — Mount Elleiy is the centre 

 of this broad band of granite. A huge tor, occupying the 

 highest point of the mountain, forms a prominent feature in 

 the landscape. From the induration and metamcnphism 

 which this plutonic mass has effected along its margin, it is 

 younger than any of the palaeozoic sediments. At Bonang 

 it is a ternary compound of glassy quartz, white and greyish 



* Notes on the Physiography of the Tambo Valley. J. StirUng, in 

 Transactions Geological Society of Australasia, 1887. 



t Notes on the Giblo Kiver Tableland. J. Stirling, in Mining Eeports for 

 September, 1887. 



+ On the Devonian Rocks of North Gippsland. By A. W. Howitt, F.G.S. 

 Government Report Geological Survey of Victoria. 



