REFERENCE . 



A DurLlella Grit - - _ _ 

 8 Jlrdrossan Sandstone - - 

 C Ardrossan Marble _ _ _ . 

 OJ>arJc & Vari Linus ton* - . 

 E Vari Ughl-eoH Siliceous Rock 

 F Ferruginous Shale - - - . 

 MJlJicacecti." Slxite _ _ '_ _ 

 C Dark green Talcose Schist - [2 

 N Granite _ _ _ _ _ _ . 



The same tetters ft re used on 

 JYffures 2 and 3 . 



I/RTIE POINT 



FlCURE I 



