I3i 



Kilometres After crossing Chignecto isthmus the railway 



enters the low-lying portion of Nova Scotia 

 which extends for many miles along the Gulf 

 of St. Lawrence coast and reaches inland to 

 the Cobequid hills. This low-lying region is 

 floored with various divisions of the Carboni- 

 ferous and also with strata of Permian age. 

 The measures in places are closely folded and 

 faulted while in other places they lie nearly 

 horizontally or in simple open folds. 



About ioo miles (160 km.) beyond Moncton, 

 the railway crosses the Cobequid hills. This 

 upland extends eastward from the head of 

 the Bay of Fundy for ioo miles (160 km.). 

 The highlands in places rise to heights of 

 about 1,000 feet (300 m.) and are crossed by 

 the railway through a pass having a summit 

 elevation of 615 feet (188 m.). They are 

 formed, in the main, of a complex assemblage 

 of plutonic rocks, both acid and basic, and 

 various schists. Along the southern margin 

 of the area, strata of about mid-Carboniferous 

 age are cut and altered by igneous rocks. 

 Whether all the igneous rocks of the 

 Cobequids are of post-mid Carboniferous age 

 is unknown. 



After crossing the Cobequids, the railway 

 passes through a zone of disturbed Carboni- 

 ferous beds flanking the Cobequids on the south, 

 and then enters the low lying Triassic area 

 which in part encircles the head of the Bay of 

 Minas. This arm of the sea is an eastward 

 projection from the Bay of Fundy. 

 310-2 m. Truro. — Alt. 60 ft. (18-3 m.). Truro stands 

 499-2 km. in the low-lying Triassic area at the head of 

 the Bay of Minas. The Triassic measures 

 are largely red sandstones and shales and are 

 flat-lying. 



Leaving Truro the railway for a few miles 

 runs over the low Triassic area, after which 

 it turns south and by means of a low divide, 

 crosses the highland area which extends for 

 250 miles (400 km.) in a northeast-southwest 

 direction and which forms the axis of the Nova 

 35063— 9! 



