ABSTRACT OP PROCEEDINGS. XXXV. 



Middle Devonian breccias and agglomerates with interbedded 

 mudstones dipping E. 30 N. at 80°. 



Local information revealed that serpentine also occurred five 

 miles north of Mount George, near Glen Lewis in Dingo Creek 

 (Western Branch), and specimens of serpentine have been received 

 by Mr. Card from Bow Bow near Tinonee, south of the Manning 

 River, and approximately twelve miles south-east of the last 

 mentioned occurrence of serpentine. 



Thus we have in this region a series of formations and geological 

 structures completely analogous to those of the great serpentine 

 belt on the upper Peel River, but striking rather more west of 

 north, and lying some twenty miles east of the line which would 

 continue the strike of the Great Serpentine Belt southwards from 

 Nundle, and therefore in a position where only the highly crushed 

 phyllites and jaspers of the eastern series would be anticipated, 

 instead of the normal Middle Devonian rocks passing into Upper 

 Devonian and Carboniferous rocks, that actually do occur. Future 

 research must be directed to discovering whether this whole region 

 is a faulted repetition of the serpentine line or its deflected 

 southern extremity. Further, the presence of the north-westerly 

 strike so near the coast renders improbable the suggestion that 

 the N.N.E. strike of the Devonian rocks at Port Macquarie is 

 connected by a curve sweeping through an E.W. direction with 

 the N.N.W. strike of the western slopes of New England, but that 

 the N.N.E. strike is more probably a virgation, passing off from 

 the main N.N.W. line of strike, such virgations having been 

 noticed in several areas between Bingara and Nundle. 



Monthly Meeting, ISth September, 1916. 

 Mr. J. E. Carne in the Chair. 



Nine members were present. 



exhibits: 



1. Mr. E. O. Andrews, Photographs of beach forms at 

 Lady Robinson's Beach, in illustration of his paper read 

 before the Society. 



