RELATIONSHIPS OF THE AUSTRALIAN CAINCZOIC SYSTEM. 
iy —_— — 
faunal relationships are decidedly Janjukias. From Batesford, 
extending up the Moorabool Valley, the polyzoal rock is greatly 
in evidence. This deposit at the base is{largely composed of 
Lepidocyclina shells, with abundant granite detritus from the 
adjoining coast. The overlying white polyzoal limestone with 
Amphistegina replacing to a large extent the Lepidocyclina 
indicates fairly deep water conditions, and a general freedom 
from terrigenous material. During this phase, therefore, the 
Janjukian sea probably represented a fjord-like aspect im which 
an arm of the sea extended up a drowned valley. In the 
. neighbourhood of Steiglitz there are certain fault-lines which run in 
a parallel direction with the general trend of the axis of outcrop of 
the polyzoal rock, and these may have been developed as a small rift- 
valley cutting into the Ordovician ranges of the country beyon| 
Maude and Steiglitz. That the conditions were not stable for a long 
Sa 
iN cosas 
~ limestone 
. with polyzee 
\\ 
4 cond pink 
limasrone 
—N 
Polyroal rock 
with pebbles of 
Cee Sandstone and 
Sea Ordovictar slate 
S SGiliceous 
Sandsrone 
Fig: SEemiOn IN THE MOORABoOL VALLEY NEAR MAUDE. 
period is seen in the presence of argillaceous beds between the poly- 
zoal rock as at Torquay, and above the same at Waurn Ponds and 
Batesford. 
[ 40 ] 
