300 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [March 8, 



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coats. The whole being traversed by 

 a system of north and south and east 

 and west joints, causes it to break up 

 into large, rectangular, shghtly-curved 

 slabs and blocks, affording a good and 

 easily quarried building material. 



Numerous "elvans" or dykes occur, 

 cutting through the granite in various 

 directions, in long narrow bands ; they 

 are generally composed of a hard, com- 

 pact, and very fine-grained granitic 

 rock, of a reddish colour, and are 

 evidently of a posterior formation to 

 the mass of the granite. 



I have been unable to discover any 

 metalliferous veins in the granite, and, 

 from the general homogeneous cha- 

 racter of the rock, and the entire ab- 

 sence of quartz-veins, I should not 

 anticipate the discovery of gold or 

 other metals in this district. 



Metamorphosed Palceosoic Strata. 

 — Surrounding the above district on 

 all sides, except to the south-east, 

 where the granite is overlaid by the 

 lava plains of the Loddon, we have a 

 mass of metamorphosed palseozoic 

 strata, striking everywhere true north 

 and south, and dipping east and west 

 at angles varying from 45° to 90°. 



These strata consist of — 1st. Ferru- 

 ginous, micaceous, and felspathic sand- 

 stones and grits, of various shades of 

 red, grey, and brown ; 2nd. Hard and 

 soft arenaceous and felspathic clay- 

 slates, and fine arenaceous-banded 

 flag-stones ; 3rd. Quartz-rock and 

 fine-grained quartz-conglomerate. 



The country occupied by these 

 rocks consists chiefly of bold, rocky, 

 scrubby ranges and gullies, and more 

 openly timbered flats ; the highest 

 points of the ranges being immedi- 

 ately adjoining the granite boundary. 

 This is a very marked feature ; the 

 junction of the granite and metamor- 

 phic rocks being almost invariably at 

 the base or on the flanks of a steep 

 rocky range. The palceozoic strata 



