20 



SIDNEY POWERS 



5°-io°. The shale and sandstone underlying the basalt are exposed 

 on the northeast side, for a short distance only. The sandstone 



N 



Fig. 16. —Structure section, G, through Clarke's Head, on the south, and Swan 

 Creek, on the north. The structure of the pre-Triassic rocks is not shown. Overlying 

 the Triassic red sandstone is a bed of tuff, overlain, in turn, by agglomerate. At Swan 

 Creek only agglomerate appears, but it is probably a part of the same flow. 



Fig. 17. — A detailed view of the agglomerate which comprises a large portion 

 of the Five Islands volcanics. The photograph shows the center of a 100-foot bed 

 of the agglomerate east of Blue Sack. The angular blocks are composed of basalt, and 

 the matrix is tuffaceous. 



is seen to be in fault contact with the Carboniferous shales and 

 sandstone to the north. 



Partridge Island. — East of Cape Sharp is a peninsula called 

 Partridge Island, formed of a mass of basalt connected with the 



