THE PICTOU COAL FIELD — POOLE. 247 



McLellan's brook, sliortl}^ after that stream enters the coal field- 

 It is some 8 feet wide and has a course N. 80^ W. The easterly 

 dipping measures of McLellan's brook section are sharply 

 deflected from N. 43= E. 20° to N. 20° E. 21 ° as they approach it. 

 On its southern side the measures dip N. 8''' E. 40*^, and where 

 seen higher up tlie brook on the bend leading to the grist mill, 

 they are in an anticline and include a band characteristic of 

 McLellan's brook section of compact black shale, containing frag- 

 ments of plants. The fault is supposed to leave the bed of the brook 

 and pass to the eastward immediately above the Three Feet seam 

 of coal on the west bank wdiere the measures are concealed. Fol- 

 lowing up the brook from this point the dips gradually change 

 their direction from N. 40° E to due E , thence to S. 60° E., due S. 

 and S. 30° W. with an average inclination of 25°, all within a 

 distance of 75 yards When next exposed some 80 yards higher 

 up, the second fault has been crossed and the measures are 

 heavy bedded sandstones dipping N. 20° W. 50°. With the 

 sandstones are beds of grey conglomerate, probably the lowest 

 in the series of the productive coal measures, here resting con- 

 formably on what are Ijelieved to be Millstone Grit beds reduced 

 at this point to a feather edge and with the same dip and strike 

 overlying Lower Carboniferous. 



Tka North fault :* — Frequent reference wdll be made to this 

 fault which was given on the map of 1869 a curved course 

 along the northern skirts of the coal measures, and its position 

 is somewhat changed at one or two points. It definitely separ- 

 ates the coal measures from the Devonian and Permian where the 

 Middle river crosses it, thence eastwardly its direction either 

 carries it along the contact of these systems and up Waters' 

 brook, or as the Fletcher fault across McCulloch's brook, in 

 either case otherwise than as shown on the map of 1869. Thence 

 eastwardly its course is in doubt for a mile or so. When next 

 determined on approaching the East river its general direction 

 has entirely changed and dividing the New Glasgow conglomerate 

 and its substrata from the coal mea.sures follows the course laid 



♦Journals of tlie House of Asseinblj', 184i, App. 49. 



