Fhysiography of Werribee Area. 



193 



lar in their distribution. With these colour differences as a basis, 

 and in order to deal with the area in greater detail, we may dif- 

 ferentiate the whole into five main topographic ** blocks." These 

 are set out in Fig. 2, and are called A, B, C, D, and E. (See 

 also block diagram Fig 3.) 



,.-./.. ,._...'J»'ii» ^4 



.iav 



^ J— vGidborne Highlands 



Wcrribcd PIcHns! 

 ^Irdhmoo* 



rivers: 



BOUNDARIES •.(^.B.C.D.E)-'—* 



Fig, 2. — Subdivision of the area into five structural blocks for descrip- 

 tifve purposes (Section YI.). 



(a). In the N.W. and S.W., blocks A and C stand out as great 

 dark-coloured oblong masses of relatively high relief. Both are 

 heavily timbered *' Ordovician ranges," deeply scored into by river 

 valleys, and they represent two separate portions of the great 

 uplifted peneplain of Victoria. 



