ALKALIXE KOCKS OF S. QUEENSLAND. 



249 



PLATE II. 

 APPARENT DIP DIAGRAM. 



Designed by W. G. WOOLNOUGH. D.Sc. Univeraiiy of Sydney. 



Copjrijht- 



4.— THE ALKALINE EOCKS OF SOUTHERN QUEENSLAND. 

 By H. I. JENSEN, D.Sc. 



Introduction. 

 Eastern Austi-alia possesses a vast abundance and great variety 

 of alkaline rocks. In Tasmania they occur at Regatta Point, Poit 

 Cygnet, &c. ; in Victoria at Mount Macedon ; in New South Wales at 

 Mount Kosciusko, and in the Iviama-Jamberoo district, the Gib Rock 

 ;;nd Mittagong district, the Warrumbungle and i\andewar Mountains, 

 the Canobolas Mountains, the Macpherson Range, and at Barrigan. 

 In Queensland they occur in great abundance in the Glass House 

 Mountains, the Mai'oochy and Cooran districts (on the North Coast 

 line), at Mount Flinders, and in the Little Liverpool Range. The 

 author has personally investigated these South Queensland occur- 

 rences as well as many of the alkaline bodies of New South Wales, 

 and his work is reviewed in a paper entitled " The Distribution, Origin, 



