96 
Geology and Physical Geography ; 
A great extent of country near the western boundary of the 
colony, along the Glonelg River, along the coast from the Glenelg 
to Portland, and from Warrnambool to the Gellibrand, consists of 
Upper Tertiary sandy deposits resting on the Miocene beds and 
Mesozoic rocks, and passing under the Newer Volcanic rocks at 
the edges of the latter. Similar sandy and gravelly deposits in 
extensive areas, or large and small outliers, flank on all sides the 
Mesozoic ranges of the Cape O/way district, and of Western Port 
and Sou tli Gippsland. (Figs. 42 and 43.) 
Fig. 42.— Section or Pliocene Tertiary Beds at Westbgry. 
so ft. 
a Surface soil. 
b White and yellow clay with red seams, 
c Brick-red indurated ferruginous clay. 
d Yellow and red clay. 
c Coarse granitic detritus and brown ferruginous sand, very micaceous, with a little 
clay. 
/ Laminar brown sand, ferruginous and micaceous, with white and brown clay bands 
and hard ferruginous seams. 
1 1 Evenly bedded, horizontally laminar clay, greyish-white and light-brown, finely 
micaceous, re>cmbling some decomposed Silurian shales in character. 
A Fine greyish-white clayey sand. 
i Variegated light-brown and whitish clay, containing quartz, pebbles, and sand, 
i Granitic detritus and clay, variegated red, brown, and whitish. 
k Variegated clay, occasionally sandy, white, light-brown, bluish, and reddish. 
I Consolidated sand and clay, brown and white streaked. 
Fig. 43.— Section of Upper Tertiary (Older Pliocene) Beds in 
Rosedale Cutting (Main Road). 
a Surface soil. * Clay, with irregular ferruginous bands 
b Clay. d Fine yellowish-white laminar clay ’or 
c Stratified ferruginous sandy bands. mud. 
<! Ferruginous quartz gravel, with clayey e Ferruginous sand, 
and sandy layers. f Bluish-white clay. 
Ferruginous sandy .and gravelly beds prevail along the east of 
Port Phillip, from Melbourne to Frankston. Near Melbourne 
they are seen in natural section resting on Older and overlaid by 
Newer Volcanic rocks. 
