THE TRIAS. 29 



carboniferous," an underlying scries of red and gray sandstones and 

 shales, holding Carboniferous plants, extending Ironi near Cape Vv' olfc 

 toward the north point, and a similar scries found at Governor's 

 Island and Gallas Point in Hillsborough Bay. These are undoubtedly 

 extensions of the Carboniferous of Nova Scotia. All the rest of the 

 island is occupied with Triassic rocks ; in one place, Hog Island in 

 Kiclimond Bay, associated with trap. The general relations of these 

 rocks are seen in the sections. 



The beds of the Triassic series, as seen in Prince Edward Island, 

 consist chiefly of soft red sandstone, with some buff'-coloured beds and 

 red and mottled clays. Associated with them are conglomerates and 

 hard calcareous and concretionary sandstones, passing into bands of 

 arenaceous limestone, which is in some places a dolomite. The 

 following section in Orwell Bay and its vicinity shows the beds 

 resting on the Upper Carboniferous of Gallas Point, and may be 

 taken as typical, it is in ascending order : — 



Feet. 



1. Bright red sandstones with white bands .... 30 



2. Bed shales with white stains and red sandstones with 



cylindrical casts of fucoids ...... 60 



3. Red and purplish sandstones with gray bands and layers 



of ferruginous conglomerate with obscure remains of plants 88 



4. Beach, probably representing soft beds .... 48 



5. Bed flaggy sandstone with conglomerate and concretions of 



red oxide of iron, containing remains of plants , . 50 



6. Bright red sandstones and red shale with greenish stains . 30 



7. Marsh, probably soft beds ...... 24 



8. lied shale and green bands capped with bright red sand- 



stones ......... 75 



405 



(Here the section is broken by Orwell Bay, which prob- 

 ably represents some thickness of soft beds.) 



9. On the high cliff's near Belfast are very bright red sand- 

 stones and shaly beds, with gray blotches and cylindrical 

 fucoids — about . . . . . . . .120 



10. Over the last are seen, in the country east of Belfiist, soft red 

 sandstones with beds of conglomerate with rounded quartz 

 pebbles and arenaceous cement (thickness uncertain) 



525 



As seen in this section, the whole thickness of these beds cannot 

 much exceed 500 feet. Of this the lowest 270 feet, being Nos. 1 to 



