Troc. Hot. Soc. Victoria, 20 (N.S.), Pt. II., 1907.] 



Ai:T. VIII. — Notes on t/ie Geuloyy of Moorooduc in the 

 Morn ingto n Fen insida. 



By ERNEST \V. SKEATS, D.Sc, A.R.C.S., F.G.S 

 Professor of Geology, University of Melbourne. 



(With Plates XIV.-XVI.). 

 [Read 10th October, 1907]. 



Introduction. 



My first visit to the neighbourhood of Moorooduc was made 

 in 1905, in the compimy of my assistants, Messrs. H. J. Grayson 

 and H. Summers, and the members of the Geological Field Class 

 of the University. On this visit we were concerned mainly with 

 three j^roblems : — 



1. The age of the Palseozoic sediments which rise above the 

 mantle of Tertiary rocks. 



2. The characters of the granitic mass of Mt. Eliza and of 

 the acid veins proceeding from it. 



3. The nature of the metamorphi«m effected by the in- 

 trusion to the granitic rocks into the Palaeozoic sediments. 



This first visit enabled us to obtain evidence bearing on the 

 two latter questions, but we shared the fate of previous observers 

 in failing to find any fcKssils, sio that the age of the rocks 

 remained in doubt. A second visit made under similar auspices 

 in 1906 was more successful, as recognisable fossils were 

 obtained. 



The present communication is ba.sed partly on field-work 

 during these visits and a later examination, and partly on a 

 petrological determination of the granitic and metamorphic 

 rock^. 



