BY H. C. RICHARDS. 185 



of tlip Mountain, which occupies several hundred acres has a 

 very uneven surface and great gorges up to 300 feet in depth 

 have been carved out of the solid trachyte, the .streams in 

 them falling over on to the lower surrounding country by 

 waterfalls several hundred feet high. The southern and 

 eastern sides of the Mountain are precipitous and so the 

 mass stands out in bold relief {see Text -Fig. 2S). 



Text-Fig. 28. — View looking north across the Springsure Township 

 over the lower basaltic rocks to the Mountain, which is composed of 

 trachyte. The steep sides of the Mountain are well seen. 



{B'o k lent by Go> eminent Tourist Bureau.) 



The Virgin Rock is the name given ta on" of the more 

 promi-aent peaks on ths eastern edge of the Mountain. 



Pal-EOZOic Sedimexts. 



These form the basal rocks of the area and have been 

 intruded by the volcanic rocks. They consist of sandstones, 

 gravels and shales where met with seven or eight miles to 

 the south-west of Springsure, near the homestead on Rain- 

 worth Station. In the immediate noighbourhood of Spring- 

 sure they do not outcrop at all as the basal rock showing 

 in the vicinity of the town is the basaltic agglomerate 

 which underlies the trachj'tic rock. 



Dr. Jack* recorded the occurrence, between Dilly 

 Station and Crystal Creek, of a blue limestone containing 

 ♦Ann. Progress Report, Q'ld. Geol. Surv., 1894, p. 9. 



