Nowra. 
327 
(1) Bulli Coal Measures. 
(2) Upper Marine Series. 
(1) Crinoidal beds. 
(2) Nowra grits. 
(4) Wandrawandian sandstone. 
(4) Conjola beds. 
(8) Clyde Coal Measures. 
( d ) Silurian slates. 
The Eruptive rocks comprise : — 
(а) Intrusive dykes of dolerite and gabbro. 
(б) Volcanic: — 
(1) Bomba lavas. 
(2) Red tuffs. 
(8) Kiama lavas. 
Travelling north from Nowra towards Clifton, the 
hills along the road show splendid sections and out- 
crops of the Coal Measures, for the most part capped by 
Hawkesbury Sandstones. Basalt, probably the same 
age as the Kiama rock, occurs about Dapto and Lake 
Ulawarra. The Bulli Coal Measures outcrop in the 
Cambewarra Ranges. 
At Saddleback Mountain, to the south-west of 
Kiama, the volcanic rocks are 1,500 feet thick. 
Professor David is of the opinion that “ one of the 
sources of these lavas has probably been the conical 
hill which forms an eastern spur of the Saddleback 
Mountain/’ 
To the north-west of Nowra, on the road to Moss 
Vale, as we ascend the Cambewarra Ranges, a section 
