508 



THE DISTRIBUTION, ETC., OF ALKALINE ROCKS, 



The eastern border of the Gondwana-land continent practically 

 coincides with the East Australian alkaline belt. The northern 



Alkaline Arts* Oorna 



Fig.5. — Map of the World showing Distribution of Alkaline Rocks 

 and Epeiric Areas. 



Fig. 6. — Map of the World showing Distribution of Atlantic and 

 Pacific Coast-Types (after Neumayr). 



border of Gondwana-land facing the Carboniferous Mediterranean 

 is lined with groups of alkaline rocks which are met with in 



