1 92 Proceedings of the Royal Society of Victoria. 



With regard to tlie occurrence of a quartzite in the tertiary 

 series, Professor J. W. Dawson, in speaking of one overlying the 

 eocene in Egypt, uses words whicli exactly apply to oui- rock.* 

 " The Red Mountain, near Cairo, ... is composed of a hard 

 brown, reddish and white sandstone ... In many parts it has 

 the characters of a perfect quartzite, and appears at first sight 

 extremely unlike a member of the tertiary series . . . The 

 induration of the beds seems to be local, and to be connected 

 with certain fumarole-like openings, which have probably been 

 outlets of geysers or hot siliceous springs contemporaneous with 

 the deposition of the sand." Perhaps the same cause has Ijeen 

 efficient at Maude. A somewhat similar tertiary quartzite, it 

 it may be mentioned, occurs at Keilor, but is higher in the series, 

 and is capped by newer and not by older basalt. 



Overlying the quartzites of Sutherland's Creek, we have the 

 older volcanic rock, and over this again limestone of a similar 

 nature to that already described in the previous section. On the 

 eastern side of the valley this is in some places capped by the 

 newer volcanic rock. Near the most soutlierly outcrop of the 

 ordovician on Sutherland's Creek we found the sectiuii to i^e, 

 approximately, as follows : — 



Newer volcanic ... ... 40 feet. 



Sandy limestone ... ... ^0 ,, 



Older volcanic ... ... 60 ,, 



Quartzite and sandstone ... 90 ,, 



Ordovician slate ... ... -^0 ,, 



250 



The Sequence of some of the Victorian Eocene Beds. 



The recognition of the fact that the sandy limestone under- 

 lying the older basalt of Maude, is practically the etjuivalent of 

 the lower part of the Spring Creek section, and that the upper 

 beds at Maude are the lepresentatives of those at Waurn Ponds, 

 supplies a hint that is of u.se in unravelling a good deal of the 

 stratigraphical sequence of the eocenes, and we have gathered 

 together a few facts which show that we are now in a position to 



# Geol. Mag., N.S., Dec. III., vol. i., 1884, p. 385. 



