Palaeozoic Geology of Victoria. 



129 



Theiy are to be correlated with a very general period of great 

 fluviatile activity in Pleistocene times in Australia. 



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

 of Map 4, there is an -txtenxive basin drained partly to the soiitii 

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

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

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

 preserved at altitudes rising to about 800 feet above sea level, and 

 resting on a floor varying from Ordovician sediments to Devonian 

 porphyry and limestone. 



In general, however, they would 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 north- 

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

 while passing along the coach ro^ad to Buchan, but its extent and 

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

 lated with the 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 descriptive sections now concluded, dealing with two 

 widely separated areas in Gippsland, which, 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, 



Bucka-n River .-,.... 



MM Uod 

 MurriiKial R , ^J,-.JFluviAiJde GrdMcU 



^ SnowrvR 



Buchan R 



Snowij River Series. 



V*i he'" Kaxnoioti. 



lower Onh. 



iower Ka*«oiout 



