Art. V. — Geology of tJte Lower Moorahool. 

 By T. S. Hall, M.A., 



Demoustrator and Assistant Lecturer in Biology in tlie University 

 of Melbourne ; 



AND 



G. B. Pritchard, 



Lecturer in Geology in the Working Men's College, Melbourne. 



(Plates I. and II.) 



[Eead lOtli June, 1897.] 



The valley of the Moorabool River from its confluence with 

 the Barwon, at Fyansford, to a short distance above Maude, 

 displays a series of sections extending over some twenty miles in 

 length which clearly illustrate the diversified character and the 

 relations of our marine tertiary beds and the deposits associated 

 with them. We have previously described the series as shown at 

 the southern end of the valley, and pointed out that the Miocene 

 beds of the old survey really underlay their Oligocene (1). At 

 a subsequent date we dealt with the tertiaries in the neighbour- 

 hood of Maude (2), and showed that the same sequence held, 

 while the close relationship between the marine beds underlying 

 the Older Volcanic rock and those of Spring Creek enabled us 

 to indicate the sequence of the tertiaries generally. Since the 

 publication of these papers we have examined the valley for some 

 miles to the north of INIaude, and also the undescribed and only 

 partly mapped portion between Russell's Bridge (The Clyde) and 

 the railway viaduct near the Moorabool Station. Our inspection 

 of the beds shows that the general south-westerly dip, which 

 we previously indicated as existing in the southei-n part of the 

 valley, holds as far to the northward as Maude, near to which 

 place the marine conditions give place to freshwater ones. 



Beginning at the northern end of the area under consideration, 

 we find that about lialf a mile above the confluence of Woolshed 

 Gully, or about a mile and a half below the junction of 



