Granitic Areas: Physical Character and Vegetation. 17 
CHAPTER III. 
Granite — Localities; Physical Character and Vegetation of 
Granitic Areas. Mineralogical Characters — Stratigraphic 
cal Position and Relations to Palceozoic Rocks. Trappean 
Rocks — Mineralogical Characters oJ\ and Areas occupied 
by. 
Localities. 
Granite occurs in protruding masses forming isolated areas of 
varying extent throughout the colony. 
To quote from Mr. Sclwyn’s work : — “ It does not occur along 
any defined axis or line, nor has it any physical connexion with 
the main geographical axis of the country, but forms isolated 
groups of hills, such as Station Peak, Mount Eliza, Arthur’s Seat, 
Wilson’s Promontory, &c., on the south, and Mount Alexander, 
Mount Tarrangower, the Terricks, Mount Korong, Mount Beck- 
worth, and others on the north. 
Some of these — as Station Peak, the Granite Bange of the 
Anakies, the Terricks, some points on the Avoea Plains, and a 
solitary outcrop west of the Glenelg River — are entirely surrounded 
by level Tertiary or Volcanic country, and are not connected by 
any surface ridge with the main mountain system. 
On the Main Divide itself, a portion west of Ararat, Lar-ne- 
Gerin, Mount Buangor, a portion north of Lancefield, Mount 
Disappointment, Mount St. Leonard to Mount Arnold, and east- 
ward of Mount Leinster, between Mounts Tambo and Cobberas, 
are the only instances where granite constitutes the crest of the 
Main Divide, and the greatest lengths of these granitic areas are 
usually across, instead of along, the axis of the range. In most 
cases, the granite outcrops constitute portions of the minor systems 
of ranges formed by the leading northern and southern spurs from 
the Main Divide. Of the two largest areas of granite, one is 
that which extends between Reedy Creek and the King River, 
and includes the Strathbogie Ranges; the other is that consisting 
partly of granile and partly of rocks classed on the Geological 
Sketch-map as Trappean, which extends from the Main Divide, 
between Mount St. Leonard and Mount Arnold to the Goulbum 
on one side, and on the other to tlio Yavra, where it is connected 
by a narrow belt with another large granitic area extending along 
the Southern Spur from Mount Baw Baw to the head of the 
L«a Trobe, and thence to near Dandenong. 
Besides those already mentioned, the following are the principal 
tracts where granite occurs as the surface rock : — An area sur- 
rounded by metamorphic rocks between the Wannon and the 
Glenelg, and several localities in the Grampians ; Yowen TIill, 
Mounts Go war, Kerang, Egbert, and McIntyre’s Ranges, near 
Kingower ; between Ararat and Stawell ; small outcrops near St. 
