226 



Kiiomerres Carboniferous Limestone series. The Rivers- 

 dale strata are separated from those of the Car- 

 boniferous Limestone series by a fault, but 

 from evidence obtained elsewhere, Fletcher was 

 convinced that the Carboniferous Limestone 

 series overlaid the Union- Riversdale group. 

 The reddish shales and sandstones of the 

 Carboniferous Limestone series are exposed in 

 rock cuttings along the railway and in the valley 

 of Cameron brook. The strata are much 

 disturbed and in places are vertical. The strata 

 of the Carboniferous Limestone series occupy a 

 large area forming the southern boundary of 

 the Pictou coal field. The measures are largely 

 reddish shales and sandstone with many beds 

 of limestone and argillaceous limestone. Logan, 

 Dawson, Fletcher and other geologists have all 

 agreed in calling the strata the Carboniferous 

 Limestone series with the implication that the 

 measures at least roughly correspond in age with 

 the Windsor series. 



35 m. Hopewell Station — Alt. 206 ft. (62-8 m.). 



56-3 km. Before reaching Hopewell, the railway turns 

 to the north and proceeds down a large branch 

 of the West river of Pictou. The red strata 

 of the Carboniferous Limestone series are 

 exposed along the railway and on the banks of 

 the stream, dipping in various directions, 

 commonly at rather low angles. Approaching 

 Eureka, the stream valley first becomes gorge- 

 like and then broad and deep. 



36-5 m Eureka Station — Alt. 145 ft. (44-2 m.). At 



58-7 km. Eureka the railway enters the deep-set valley 

 of the East river of Pictou. This river for 

 12 miles (19-3 km.) above Eureka station 

 flows through a district underlain by strata of 

 the Carboniferous Limestone series but towards 

 the southeast, for a distance of about 5 miles 

 (8-0 km.) along the railway, these measures 

 occur only in the valley bottom and form a 

 band nowhere more than y mile (o-8 km.) 

 wide. On the south, the Limestone series is 

 bounded by an area of the Union- Riversdale 

 series; on the east they abut against a rough, 



