110 SECTION AT ONE TREE POINT, 



R.S. TAS. 



The above results have been summarised in the ap- 

 pended table, which, however, requires a few words of ex- 

 planation. Thcugh the actual sequence of the strata is 

 beyond doubt, the age attributed to the different beds is 

 open to dispute. It all depends on the age of the leaf 

 bed series. As far as this is concerned, one fact is cer- 

 tain, that it does not belong to the Eocene epoch, and 

 we need not attribute a Pre-Eocene age to a pre-leaf 

 bed Derweiit valley. Even if my view as to the Pleistocene 

 were not correct, the leaf beds are not likely to be oldor 

 than Miocene. 



Plates. 



iii. General view of One Tree Point. 



iv. fSection at One Tree Point. 



V. Diabase boulder in breccia. 



vi. Ijreccia and leaf-beds— boulder pressed into leaf-bed^ 



vii. Basalt overlying the leaf-l^eds. 



viii. Section at One Tree Point. 



ix. Partial reconstruction of One Tree Point Volcano. 



