138 
Geology and Physical Geography ; 
further eastward, all in Upper Silurian strata, appear to fornr 
several small separate belts, the relations of which have not been 
investigated. 
Reedy Creek, Strath Creek, Diamond Creek, Warrandyte, and 
other workings are all situated on what— judging from the* 
observed bearings of strike in various localities — is a curved belt 
of rocks, the southernmost known auriferous locality on which is 
near Tern pleat owe. 
The Ginn Ghin diggings, Yea, Higiubotham, and — to the south, 
of the granite and trap of the Watts Valley — Warburton and 
Hoddle’s Creek appear to indicate another curved belt, though 
the relations between the rocks of the various localities are 
uncertain. 
Proceeding eastward, the next belt is a very well-marked one, 
the various gold-workings being situated along a zone of Upper 
Silurian rocks, having a well-defined north-westerly strike. The 
principal diggings are Merton, Gobur, Growlers, Spring Creek, 
Alexandra, and the Acheron diggings, in the Goulburu drainage- 
area, and north of the granite of the Main Divide, while to the 
south are the workings of Cumberland Creek, the Upper Yarra, 
Hawthorn, Pheasant and Russell’s Creeks, and Tanjil. Several 
scattered gold-workings have been opened on either side of the 
main line of this belt, such as Crossover, in Gippslaud, the work- 
ings up the eastern branch of the Tanjil, and on the upper portion 
of the Tycrs, indicating the existence of other parallel strips of 
auriferous country. There is a very good field for future mining 
enterprise upon the course of the Merton to Tanjil belt, there 
being a considerable extent of volcanic country ou the Gippslaud 
side, which is likely to be underlaid by auriferous gravels, and 
abundant scope for the prospector in quartz reefing. Most of the 
known auriferous reefs on this belt are associated with diorite 
dykes, which have an easterly and westerly direction across the 
strike of the Silurian rocks. 
The next well-defined auriferous belt is the most important in 
the Upper Silurian country, and is nearly 100 miles iu length. 
On it arc situated, in the Goulburn drainage-area, the Strathbogie 
diggings, Maindample, Jamieson, Enoch’s Point, Gaffney’s anyl 
Raspberry Creeks, Viood’s Point, and Matlock ; on the fall to- 
wards Gippslaud, BB Creek, Jericho, Aberfeldy, and Walhalla, 
the latter place being celebrated for the Long Tunnel mine, the 
premier quartz mine in Victoria. In nearly all the quartz work- 
ings along this belt the reefs accompany, or are intimately asso- 
ciated with, diorite dykes having a direction coincident with the 
strike of the Silurian rocks. 
There is a fair field for the prospector in the many untested 
portions of country intervening between the proved gold-workings 
on this zone. 
# 
