468 



UK. A. JOWETT ON THE 



[Oct. 1 9 13, 



dyke from the cliff and above the beach. It marks the position of 

 a fault which runs north 28° west, and hades westwards at an 

 angle of 16°. This fault is obviously older than the east-and- 

 west fault-system described above, for its fault-breccia is broken 



Fig. 4. — Geological map of the coast, from the Lunan-Bay sands 

 to the Red Head. 



LU N/1 N BAT 



Si-ale of Furlong 



Spectacle 



Rock Skelly 



RED HEAD 



Olivine-basalt with plagioclase-plvenocrysts\ 

 and olivine in groundmass. ' 



Olivine-basalt with olivinc-phenocrysts. — - 

 Olivine-basalt with glomeroporphyritic aggregates of\ 

 olivine, augite, and iabradorite. 

 Lower Old Red Sandstone 

 conglomerates inter.bedded 

 U^er Old Red Sandstoncr 



a 



iiments, iucludiu'' true\ JX-X-Vi 



ith lavas. I ^^ 



across by a member of the latter, and the portion of fault-breccia 

 on the northern side is thrown westwards a distance of 6 feet. 



On the shore 300 yards west of Ethie Haven, and about half- 

 way between high- and low-water marks, occur two large detached 

 masses of red and yellow mottled sandstone resting on a sandstone- 

 breccia. Some portions of the sandstone exhibit a beautiful poiki- 

 litic structure when broken, owirig to the uniform crystallization 



