AiiT. XI. — Volcanic Necks at Anderson's Inlet, South 

 Gippsland, Victoria. 



By a. E. KITSON, F.G.S. 



(With Plates XVIII., XIX.). 



[Eead 11th June, 1903]. 



In his valuable Report on the Geology and Mineral Resources 

 of South Gippsland,^ Mr. R. A. F. Murray, late Government 

 Geolo.sist, thus briefly describes an occurrence of volcanic rock, 

 and illustrates it by a section and ground plan : — ■" Fig. 7 illus- 

 trates the section at Townsend Bluff, with an appai-ent lava pipe, 

 which occurs in a circular form, about 20 yards in diameter." 



Having for a long time desired to see the occurrence, it was 

 not until recently that an opportunity was afforded to do so. A 

 close exan)ination then disclosed the fact that a most interesting 

 geological occurrence was here visible. Its intimate connection 

 with, though considerable diversity from, volcanic occurrences in 

 the adjoining district makes it necessary to allude briefly to the 

 latter. Before doing so, however, it will be advisable to make a 

 few remarks on the general geology of the district. 



From the accompanying map of the geology of this portion of 

 South Gippslanc), which map is based on the new geological map 

 of Victoria, compiled by Mr. Arthur Everett, it will be seen that 

 between the Tarwin and the Bass Rivei's, the country may be 

 divided physically into two general divisions, and geologically 

 into four. 



Physiogpaphy. 



Division l. — Between the Bass and the Powlett Rivers the 

 country consists of rugged hills reaching an altitude of over 1000 

 feet near Korumburra. They are much broken by faults and 

 landslips, and form steep escarpments along the valleys of the 

 two rivers. Numerous small streams run through it, the tribu- 

 taries of the Bass having a general westerly course, while those- 

 of the Powlett run in a southerly direction. 



1 Prog. Rep. Geol Sur. Vic, pp. 143, 144. 



