[Pkoc. Roy. Sor. Victoria, 27 (N.S.). ^''Vht I., I914.J. 



Art XI. — The Pctrolixjn II ml Mini III) Geoloi/i/ of the Country 

 near Qiireiisfoivn. 



Bx NORMAN H. JUNNER, B.Sc. 



(Wyselaskie Scholar in Geoloc^.y, University of Melbourne, 1913; 1851 Scholar 

 in Geology, Imperial OoUeye of Science, London S.W., 1914). 



(With Plate XIX). 



[Head 9th July, 1914. j 



Contents. 



1. Introduction and Previous Literature. 



2. General Geoloj^y : — 



(a) Silurian sediments. 



(b) Quartz diorite, Yow Yow. 



(c) Alteration of the diorite. 



(d) Quartz porphyry, One Tree Hill. 



3. The Caledonia Gobi Field :— 



(a) History and production. 



(b) One Tree Hill. 



(c) Panton Hills (Oram's Reef). 



(d) Yow Vow. 



(e) Alluvial. 



(f ) Future possibilities, secondary enrichment, etc. 



4. Summary and Conclusions. 



1. — Introduction and Previous Literature. 



The following contribution is descriptive of certain features in 

 the geology of portion of the Parish of Queenstown. Unfortunately, 

 the field-work was not completed, owing to the transference of the 

 writer to England, and as a result no geological map of the area 

 has l)een prepared liy him. Tlie cliief purpose of the paper is to 

 present the results of a study of the chemical and petrological fea- 

 tures and metasomatic alteration of an hitherto undescribed in- 

 trusion of (juartz diorite near Queenstown. Furtlier, attention is 

 drawn to the former richness and future possibilities of an almost 

 forgotten goldfield. Previous references to the geology of this area 

 are scant, and are of no great importance. The following papers 



