405 
11. SUMMARY OF SCIENTIFIC RESULTS. 
The Underlying Rocks of the Mallee. 
(a) The oldest Beds of the Cainozoic in this Area .—In bores 1-11, the 
oldest beds are comparable with the polyzoal rock of the Mount Gambier 
type, and their fauna shows them to be of Janjukian (Miocene) age. The 
maximum thickness is 333 feet. That it is a deposit formed under the 
sea is evident from the occurrence of sharks’ teeth, oysters, pectens, sea- 
urchins and foraminifera. In later borings, as that of Tiega, the polyzoal 
rock was seen to pass down into carbonaceous sands and clays, probably 
estuarine in part, and comparable with those found in the Otway Janjukian 
series. 
I 
I 
No. 11 bore extended 
to a depth of 600 ft. 
Fig. 40. Section of Bores Nos. 1 to 11, Murrayville. 
(6) Later Cainozoic .—This was proved to be Kalimnan or Lower Pliocene, 
generally of a shelly and shallow marine (littoral) character. Its maximum 
thickness is 92 feet. It passes downwards into typical Janjukian beds with 
no intervening series. 
