296 Proceedings of tJie Royal Society of Victoria. 



Parish of Gnarwarre, the basalt comes down to river level, ;uicl 

 about 200 yards below this columnar basalt occupies the stream 

 bed. JSTear the western boundary of Allotment 21a short gully 

 comes in from the south, and has bi'ought down a small amount 

 of coarse quartz conglomerate, derived apparently from some 

 beds underlying the basalt. Soon after this the river skirts high 

 bank in Sections II. A and II. B of Murgheboluc, and good 

 exposures are displayed. 



Murgheboluc II. B. 



Close to the junction of Allotments II. A and II. B we lind at 

 river level five feet of grey clays passing up into fawn sandy 

 clays, and then into sands. There are several concretionai-y 

 limestone bands present, some of which are rich in foraminifera, 

 and might almost be called Operculina limestone, so plentiful 

 are examples of this genus. The elitf is about 70 or 80 feet 

 high, and is capped by basalt. The base of the clitf is somewhat 

 masked by fallen debris, l)ut a few yards further on the river 

 runs close past its foot, and an easily worked .section is exposed. 



The beds as a whole resemble the others described, being givy 

 sandy clays, with well preserved fo.ssils in its lower part, though 

 they have disappeared higher up the bank. There is an area of 

 about 200 acres on the right bank of the river, from wiiich the 

 Ijasalt lias been denuded, and the boundary between the sandy 

 older tertiary and the alluvium cannot be clearly drawn. 



From here to the Murgheboluc fiat we noted only a couple of 

 exposures ; one at river level in Section III., A and B, of 

 Murgheboluc, seemed fairly rich, and we saw Cypraea eximia, 

 and a few other typical forms. The river now touches the 

 southern border of what we may call the Bruce's Creek tertiary 

 area, which extends from here northward to about Lethbridge, the 

 probable age of the supertical beds of which we have previously 

 alluded to. A large amount of denudation has taken place, and 

 on the northern or left bank of the river there is nearly a square 

 mile of alluvial flat intersected by a few deserted river channels, 

 and there is a smaller similar area on the south side of the 

 stream. The whole quadrangular area is hemmed by steep 

 cliflfs about 100 feet in height, the river entering and leaving by 

 comparatively narrow gcn-ges at the two southern angles. 



