Trans. Kay Soc-SAm" 



Vo i xryy ; plate I._ 

 GEOLOGICAL SKETCH-MAP 



TERTIARY VOLCANIC AREAS 



OF THE 



By Archibald Geikie FRS. 

 I GrancphyrerrachytePitctistonefc C—J Bedded Basalts ic wrth tuffs Ac 

 I Gabhro, Dolerrte (intrusive) K2S Basic Dykes 



