67 



at the mouth of the Riviere du Loup, indicates that con- 

 ditions for life here were exceptionally favourable. Several 

 other types of shells occur in the deposit, but fully 95 

 per cent are Saxicava. Heavy gravels of this delta, but 

 barren of fossils, are exposed across the river, not far from 

 the railway station. 



ANNOTATED GUIDE. 



RIVIERE DU LOUP TO BIC. 



(G. A. Young.) 



Miles and 

 Kilometres. 



o m. Riviere duLoup — Alt. 315 ft. (96 -m.). From 



o km. Riviere du Loup to Bic, the St. Lawrence river 



is bordered by a wide zone of the same general 

 succession of strata traversed by the railway 

 from Quebec eastward. The measures consist 

 largely of red, green, black, and grey slates with 

 bands, mostly of limited extent, of quartzose 

 sandstone. With these occur beds of sandstone 

 and of conglomerate bearing limestone pebbles 

 and boulders. The strata in general strike 

 parallel with the St. Lawrence shore but are 

 everywhere much folded and contorted; over- 

 turned folds and faults occur at many points. 

 The strata in general have been usually regarded 

 as being of Cambrian age. The measures in 

 the neighbourhood of the coast were considered 

 by Logan to underlie the Sillery formation. 

 With the exception of the fossils recovered from 

 the limestone fragments in the conglomerates, 

 the only fossil recorded from the strata of the 

 district is Obolella pretiosa. The zone of these 

 measures extends inland at Riviere du Loup 

 for about 30 miles (50 km.). Farther east, 

 the zone decreases in width and at Bic it is only 

 about 7 miles (11 km.) broad. These Cambrian 

 or Ordovician measures are bounded on the 

 south by Silurian strata consisting largely of 

 intricately folded dark slates. 



Leaving Riviere du Loup the Intercolonial 

 railway for a number of miles, passes along or 

 near the steep drop leading to the low lying 

 35063— 5! 



