THE PICTOU COAL FIELD — POOLE. 237 



affected the overlying- conglomerates and determined for the 

 river its point of exit is not known. McCulloeh's brook enters 

 over broken ground, follows close to the great break that bears 

 its name, and leaves the field on the line of contact between the 

 Coal Measures and the older rocks. The chief depressions in the 

 hills at the east corner of the field are attendant on faults which 

 take their rise within ; and the entrance of McLellan's brook 

 marks the termination of tiie synclinal fold that holds the 

 McBean and other seams at the Vale. It enters over Lower 

 Carboniferous rocks lying between metamorphic hills. 



On comparing the present map with that of the Survey it will 

 be seen it differs greatly with respect to the positions assigned to 

 the leading faults of the district. 



The Potter's brook fault (^^ which was made persistent, promi- 

 nent and straight, is turned on the point of its solitary exposure 

 and its supposed influence far east and west of the i-iver has 

 vanished. 



The subordinate McLeod fault ^-^ of parallel course, placed west 

 of the river has disappeared. 



The problematical Mill-road fault ^^^ remains unproved although 

 the theoretical considerations for assuming its existence still 

 remain. 



The Lawson fault^'*) is no longer of any importance and is very 

 limited in extent 



The West fault ^^^ ceases to part the Coal Measures from 

 the Millstone Grit, but in its position are shewn members 

 of two series of faults, downthrows to the east at its assumed 

 southern end, and downthrows to the west at its northern ex- 

 tension, both series diminishing in intensity as they approach the 

 middle ground in the village of Westville. 



The prominent McCulhjch's brook fault ^^^ has its position 

 somewhat altered, it is swerved in its course and is increased 

 greatly in magnitude. 



New dislocations both proved and theoretical are now given 

 and some minor faults in the centre of the Albion section are 



Geo. Report, 1859 : (1) pp. 49, 85 : (2) pp. £0, 75 ; (3) pp. 22, 43, 49 ; (4) pp. 33, 36 ; (5) pp. 73, 

 79, 81, 102 ; (6) pp. 77, 83, 85 ; (7) pp. 26, 36, .50, 73. 



