101 



Mount Joli-south flank: — Phacops primcevus, Calymmene 

 senaria, Ceranrus pleurexanthemas , Camarospira bisulcata, 

 Zygospira recurvirostra, Bolboporites, etc. 



The total thickness of these limestones approximates 

 1,000 feet (300 m.) and there is no evident displacement 

 within the mass. Their relations otherwise conform 

 closely to the beds of like age in the Mount Joli section, 

 though there is no noticeable degree of identity in the 

 species of fossils which occur in the two sections. 



Bonaventure Island — This island, 2 miles (3-6 km.) 

 long, 1 1 miles (2-7 km.) wide and 3 miles (5-4 km.) out 

 to sea, is separated from the mainland by a channel in 

 which the tidal currents run heavy. The island is an 

 ancient fishing site dating back to the days of the 16th 

 and early 17th centuries when Basques, Bretons and the 

 men of La Manche came out every year for the fishing, 

 returning to France in time for the lenten market. The 

 rocks of the island are entirely of the Bonaventure conglo- 

 merate and represent the upper beds, the basal limestone 

 conglomerate not being present. It is thus, in the present 

 interpretation of the formation, a mass of Carboniferous 

 rocks. The island presents a low face on the channel side 

 but the cliffs on the east rise to 400 feet (120 m.) making a 

 noteworthy fault face. These cliffs have an added interest 

 because of the large colony of water birds which nest here. 

 The assemblage is not surpassed in size anywhere in the 

 Gulf except on the celebrated Bird Rocks of the Magdalen 

 islands which politically belong to Gaspe but lie 160 miles 

 (288 km.) out to sea. The species nesting here are the 

 gannet (Sula bassana), Kittiwake (Rissa tridactyla tridac- 

 tyla), Briinnich Murre (Uria lomvia lomvia), Puffin 

 (Fratercula artica artica), Razor-billed Auk (Alca tor da) 

 and perhaps one or two more — an association entirely 

 like that on the Bird Rocks. In these Gaspe waters there 

 are two bird assemblages of this kind and two other 

 associations which consist only of the Herring Gull and the 

 Cormorant. It is a curious coincidence that the former 

 and larger assemblages, alike in kind, nest only on the 

 horizontal ledges of Carboniferous sandstones while the 

 lesser combination breeds only on the inclined strata of the 

 Lower Devonian limestones. 



The Girdle of Ordovician-Sihirian from Cap Blanc (south) 

 to Corner-of-the-Beach (north). — From Cap Blanc this heavy 

 mass of overtipped limestones passes inland, bounding the 



