225 



Miles and ^j-^g valley of Black river entirely loses its deep- 

 set character and the exposures of the Rivers- 

 dale formation become more and more infre- 

 quent. 



i6-5 m. Campbell's Siding — Alt. 429 ft. (103-7 m.). 



26-5 km. A short distance east of Campbell's Siding, the 

 barren beds of the Riversdale formation are 

 well displayed in a number of cuttings. 



ANNOTATED GUIDE. 



Campbell's siding to New Glasgow. 



(G. A. Young.) 



Eastward from Campbell's Siding the railway 

 follows upwards along the shallow valley of 

 Black river. The grey shales and sandstones 

 with red zones, of the Riversdale formation are 

 exposed in numerous rock cuttings. The strata 

 dip at high angles to the northwest and there- 

 fore, proceeding easterly, are crossed in descend- 

 ding order. Two and three-quarter miles (4-4 

 km.) east from Campbell's Siding, the railway 

 crosses a low divide, (altitude 505 ft. or 153 -9 m.) 

 and enters a watershed draining to the northeast 

 to the Gulf of St. Lawrence. 



20.7 m. West River Station — Alt. 441 ft. (134-4 m.). 



33-3 km. About i\ miles (2-4 km.) east of West River 

 station, the railway crosses the boundary be- 

 tween the Riversdale and Union formations. 

 Few, if any, rock exposures occur along the 

 railway. 



30-1 m. Lome Siding — Alt. 365 ft. (111-2 m.). 



48-4 km. From near West River to beyond Lome Siding, 

 the railway follows close to the boundary be- 

 tween the Riversdale and Union formations. In 

 this general district the sedimentary strata are 

 associated with numerous relatively small 

 bodies of igneous rocks whose origin and com- 

 position is unknown. 



Beyond Lome Siding the railway enters the 

 valley of Cameron brook and at a point about 

 \\ miles (2-46 km.) farther enters an area of the 

 35063— 2A 



