228 THE CARBONIFEROUS SYSTEM. 



red and gray shales, in one of which occur remains of plants, fossilized 

 by the gray sulphuret of copper, in the manner often observed in the 

 Carboniferous rocks of Nova Scotia. Over these are reddish sand- 

 stones of considerable thickness, succeeded by gray sandstones and 

 shales, including underclays, many fossil plants, and two thin beds of 

 coal. The thickness of these, as measured by Sir W. E. Logan, is 

 about 400 feet. These beds appear to be on the north side of an 

 anticlinal which runs out toward Shippegan. South of this, according 

 to Professor Robb's observations, the dip, though slight, is to the south- 

 ward, and the gray and nearly horizontal sandstones of the Miramichi 

 River, which contain fossil plants and a tbin seam of coal, are in the 

 centre of a great flat synclinal which occupies the greater part of the 

 breadth of the coal-field. South of the Miramichi, the gray sandstones, 

 with an opposite dip, extend to Richebucto, where a small bed of 

 coal occurs at a place called Coal Brook, with the accompaniments 

 represented in Fig. 61. 



Fig. 61. — Section on Coal Creek near Richebucto. — Dr Robb. 



' ~ Sandstone. 



^= Shale. 



Ifg Coal, 15 inches. 



==== Shale or underclay. 



— Sandstone. 



Under this, and extending to Buctouche, are reddish grits, which 

 Professor Robb regards as a repetition of those at Bathurst, so that 

 we have at Buctouche an anticlinal bringing up the lower members 

 of the Carboniferous series. From Buctouche to Shediac the dips are 

 southerly. Shediac Harbour seems to be near the centre of another 

 flat synclinal, and thence to Cape Tormentin the beds dip to the N.E. 

 at small angles. Cape Tormentin appears to be in the axis of an 

 anticlinal form, extending inland toward the wide Lower Carboniferous 

 area of Albert county, but on the coast not bringing up anything 

 older than the lower part of the Coal formation. The end of this 

 undulation, at the extremity of Cape Tormentin, is covered by a small 



