Palaeozoic Geolog;/ of Victoria. 



129 



They are to Le correlated with a very general period of great 

 fluviatile activitj' in Pleistocene times in Australia. 



Immediately to the west of the Tara Range in the northern part 

 of Maj3 4, there is an -extensive basin drained partly to tlie soutli 

 by Ti-Tree Creek, and to the north into the Buclian River, by the 

 Tara Creek. (See Block Diagram, No. 10.) Remains of a partly- 

 denuded sheet of Upper Kainozoic sands, gritaf and gravels are here 

 _preserved at altitudes rising to about SCO feet above sea level, and 

 resting on a floor varying from Ordovician sediments to Devonian 

 porphyry and limestone. 



In general, however, they Avould appear to have filled in a basin 

 corresponding in position to an ancient Devonian one, in which 

 the Middle Devonian limestones were laid down, almost entirely 

 burying them. Erosion of the present cycle has again partly laid 

 bare the limestones, especially in the basin of the Tara Creek. 



Basalt. — This rock has been observed only in the nortli- 

 western corner of this region, in the vicinity of South Buchan, 

 while passing along the coach road to Buchan, but its extent and 

 character have not been observed. It is most probably to be corre- 

 lated with tlie basalt referred to by Howitt, as occurring at Gelan- 

 tipy and the Buchan River, further north, and classed by him as 

 " Newer Volcanic." 



Palaeozoic Earth History. 



From the desiciiptive sections now concluded, dealing wdth two 

 widely separated areas in Gippsland, Avhich, however, are but very 

 small fragments of the whole region, it will be seen that the Palaeozoic 

 history provides a long succession of events, full of interesting 

 structural, petrological, and other problems about which, however, 



M'M'Uori 



Buchan R 



