354 



very similar one, has been described as being present in 

 many places over the wide extent of the Carboniferous 

 area of the Maritime Provinces. 



In the vicinity of Hillsborough and Albert Mines, these 

 light coloured conglomerates and sandstones are the 

 youngest Carboniferous strata present; the areas occupied 

 by them are those which on the accompanying map, have 

 been coloured as being underlain by the Millstone Grit and 

 over these areas the strata are horizontal or only very gen- 

 tly inclined. Northward of the vaguely defined boundary of 

 these pale coloured, quartzose sandstones and conglo- 

 merates, the low country towards Moncton is floored by 

 nearly horizontal reddish sandstones, shales and red, 

 argillaceous limestones. In a few places the pale coloured. 

 Millstone Grit sandstone and conglomerate outcrop and 

 in such places appear to conformably overlie or to be 

 interbedded with the red strata which have customarily 

 been assigned to the Millstone Grit. Along the southern 

 boundary of the main area of the pale coloured Millstone 

 Grit strata as defined on the accompanying map, measures 

 outcrop from beneath these distinctive beds which have 

 been placed in the so-called Intermediate group but which 

 probably in part belong to the Millstone Grit group. 

 Such strata, for instance occur in the valley of Stony creek 

 and there consist of quartz conglomerate, coarse and fine, 

 light-coloured sandstone, and red and green argillaceous 

 and calcareous shales. 



The greatest thickness of the pale coloured. Millstone 

 Grit conglomerate and sandstone does not exceed a few 

 hundred feet. The reddish, underlying strata presumed 

 to belong to the same group, may be somewhat thicker 

 but the strata of the whole Millstone Grit group as develop- 

 ed in the neighborhood of Moncton and Hillborough, does 

 not anywhere attain a thickness comparable with that 

 found in various districts of Nova Scotia. In general, 

 the Millstone Grit strata appear to form a comparatively 

 thin mantle resting on and covering the variously disturbed 

 and eroded members of the older divisions of the Carbon- 

 iferous. In places, however, in this and adjoining districts, 

 the Millstone Grit beds appear to conformably succeed 

 different divisions of the earlier groups without any plainly 

 marked indications of the unconformity that is known to 

 exist below the horizon of the Millstone Grit. 



