40 



T. W. E. DAVID. 



orientation a compromise in direction between the older 

 orogenic folds and the newer line of epeirogenic uplift. 



M' 

 Kosciusko 



Yass-Canberra 

 Basalt Lake 

 faults George Basalt 



Fault fguit Silurian 



SECTIONS across NEW SOUTH WALES. 

 Fig 7(a). 



S. 



W. King George Murrurundi 



Denman i Zone of Capoompera M 



.. '■ „. heavy faults Armidale : Richmond River 



Hunrer River. Tamworrh ' ,. . r . D Mt 



_ ;,: • .Fault • Clarence River. M' 



Coal measures. „ t .; Devonian :: j_ : Warning 



W 



Lambie 



Granite Pre- Ord" ■ Ordohcian \ Ord" Devonian : Serpenrine Granite \ Grdmte Carboniferous 



* --Cambrian- - Granite - - -Granite- - -620m.- -Carboniferous- Silurian Devonian * 



Schists 



Fig 7(b). 



W 



Tibooburra 



Artesian Basin 

 Cretaceous 



Fault zone 

 Oubbo Canoblas Cnal numsnivsi 



867H (volcanic) Coal measures 

 Bourke Struck Coonamble689f? : M | ng : Bamursr 



350P 500P Artesian ! Basin [Devonian \Sil">_ Oev?, Coal measures 



E. 



Trias on Permo-Carbf 



Granite 



Jurassic l3 (T 



UNKNOWN 

 Probably chiefly Older Palaeo 

 rocks with belts 



CO® 



UNKNOWN 

 zoic and Pre-Cambrian 

 of Granite. 



■ '■'•''. : 



Sydney 



Granite Granite ^800 miles. Ordovician.-0rd"-Gn-0rdovician - 



Queensland. — We may now glance at the salient points 

 in the tectonic geology of Queensland. Reference to 

 Plates 1 and 2 of this address reveal the following dominant 

 features : — 



(1) Ranges mostly of Palseozoic rocks forming the highlands 



of the Main Divide, an ancient peneplain trending 

 about N. 33° W. 



(2) A great basin of newer and softer rocks, the Oretaceous 



basin, with at its S.E. extremity an older basin of soft 

 rocks, the Trias-Jura Basin. This forms a Y, the lower 

 stroke of which is the Clarence Basin of New South 

 Wales. 



(3) A plateau of older rocks in the neighbourhood of Clon- 



curry, rising to the Barclay Tableland near Oamooweal. 



(4) The Great Barrier Reef may be added as a fourth unit 



which has shared in the tectonic development of 

 Queensland. 



