324 



Kiiomeuts. ^ ^?"^ about | mile (o-8 km.) In width beyond 

 which they are overlapped by Permo-Carboni- 

 ferous measures dipping northward at low 

 angles. 



Beyond Grenville station, the railway follows 

 a general northwesterly course and passes 

 diagonally across the remaining width of 

 the Millstone Grit. From the railway the 

 steeply rising north front of the Cobequids 

 is visible at intervals. Two and a half miles 

 from Grenville station the railway enters an 

 area underlain by Permo-Carboniferous strata. 

 These beds terminate a short distance west 

 of the railway but extend eastwards to New 

 Glasgow 50 miles (80 km.) distant. The strata 

 with very low angles of dip lie in an open 

 synclinal fold pitching to the east. The railway 

 in a distance of about 4 miles (6-4 km.) crosses 

 the western end of this syncline of Permo- 

 Carboniferous and enters an area of Millstone 

 Grit strata dipping to the southward at low 

 angles and extending to the northeast as a 

 border to the Permo-Carboniferous area. To 

 the north, an anticlinal fold brings measures of 

 the Limestone series to the surface, while on 

 the northern limb of this anticline the Millstone 

 Grit followed by Permo-Carboniferous strata 

 are again repeated. 



From where the railway leaves the synclinal 

 area of Permo-Carboniferous, to Springhill Junc- 

 tion, 17 miles (27-3 km.) west, the railway 

 crosses an area in which the strata have been 

 folded along axes pursuing a general northeast- 

 erly direction. Subsequent to the folding, the 

 measures have been crossed by heavy faults 

 some of which strike in a north-south direction 

 while others follow courses that are approximately 

 east-west, northeast-southwest, or northwest- 

 southeast. The strata range from the Limestone 

 series to Permo-Carboniferous and the whole 

 assemblage behaves as a conformable series. The 

 Limestone series is characterized by the presence 

 of beds of gypsum and of fossiliferous limestone. 

 The Productive Coal measures are present, and 



