270 T. S. Hart : 



and I have observed 60 degi-ees, both on the outer ranpre. A dip 

 of 51 degrees is shown on Stony Ci-eek by Krause. 



The greatest elevation is at Mt. William, in the centre of the 

 eastern ranges. 



Neither of the earlier sections show any faulting, though the 

 descriptions in both cases give estimates of thickness which are 

 quite inadequate, apart from faulting. The main faults have 

 not been observed, and I have no definite information to assign 

 them a probable inclination. I have observed a nearly vertical 

 strike fault in Stony Creek, near Hall's Gap. There is, however, 

 little doubt that the great valleys here are determined primarily 

 by faults allowing a succession of parallel ranges to be formed 

 of the same beds, and it is probable also that many other 

 parallel faults occur allowing repetition of beds in the long 

 gentle slopes of the hill towards the synciine. The average in- 

 clination of these slopes is much more gentle than the dip, 

 though in a hill south of the junction of Fyan's and Stony 

 Creeks at Hall's Gap it is possible to walk a long distance down 

 the bare rock following the bedding plains. 



A feature of Fyain'« Creek valley, which indicates late move- 

 ment on this fault, is the form of some of the tributary valleya 

 At the Silver IJand fall the stream comes out from a gap in the 

 east face of the range and drops into the valley below. 



We may ascribe the Grampians to the unequal elevation iuid 

 tilting of a number of fault blocks, in which the principal faults 

 were approximately meridional. The synciine was probably pre- 

 ©xistent and sandstones already somewhat denuded, forming a 

 part of the peneplain, so that they already were reduced in 

 thickness on their eastern edge. Another fault may exist under 

 the Mt. William Creek valley outside the ranges, and the whole 

 series may be associated with similar faults determining the 

 west end of the high lands as a whole. The faults need not 

 necessarily be altogether of late date ; all that is requisite is 

 movement subsequent to the peneplain fdriuation, it nuiy be on 

 old faults, and only on some of these. 



Wo may extend this idea of block elevation to the rest oi the 

 highlands. A striking example is seen in a side view of the 

 Pyrenees. Such a view is obtained from many points ; that from 

 Maiden Hill at Waubra is pjwticularly good. At the south end 



