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^lomerres ^*-*^^ Measurcs along the southern boundary are 

 brought into contact with strata of the Lime- 

 stone series, while along the eastern and north- 

 eastern boundary they are brought into 

 contact with the Millstone Grit, and along 

 the northwestern boundary into contact with 

 the New Glasgow Conglomerate supposed by 

 Fletcher to be of Permian age. The fault 

 system is a complex one and comparatively 

 little has been recorded of the magnitude and 

 nature of the individual faults. In general 

 there appears to be a set of major faults striking 

 in an east and west direction; another set in a 

 northeasterly direction and a third set in a 

 northwesterly direction. The Coal Measures 

 are also traversed by faults and one of these 

 striking in a northwesterly direction, dipping 

 to the northeast, and causing a downthrow of 

 the strata on the southwest side of approxi- 

 mately 2,600 ft. (790 m.), divides the field into 

 two main districts, respectively the western 

 and eastern districts. In the western district, 

 the strata dip in general to the northeast at 

 angles varying from 15° to 50°. In the larger, 

 eastern district, the strata in the eastern part 

 are traversed by a north-south syncline while 

 in the western part the main feature is a north- 

 easterly pitching anticline. The major struc- 

 tural features of the two areas are complicated 

 by the presence of minor undulations extending 

 in an east-west as well as other directions, 

 and of many faults of varying relative importance . 

 In the eastern district, which includes the 

 district immediately around Stellarton, the 

 coal seams occur in two sets, an upper and a 

 lower, separated by about 1,600 feet (485 m.) 

 of barren rock, mostly dark shale. The upper 

 set of coal seams is exposed in the eastern 

 part of the area, and the lower set in the western 

 part in the neighbourhood of Stellarton. In 

 the upper set there are five main seams of coal 

 varying in thickness from 3 feet to 8 feet 

 (0-9 m. to 2-4 m.). In the lower set there 

 are six main coal seams. One seam, known 



