6 D 



GEOLOGICAL SURVEY OP CANADA. 



Pre-Cambrian 

 rooks on line 

 between Kings 

 and Queens. 



but at two points at least the older rocks reappear and form the ridges 

 known as Jordan's and White's mountains in eastern Bangs county, 

 and again at Indian Mountain, in Westmoreland, where the characteristic 

 red felsites of the group appear. 



Another belt of pro-Cambrian rocks is found extending along the 

 county line between Kings and Queens. These are of the usual type 

 of felsite, petrosilex, schist and felspathic ash rock with conglomer- 

 ate. West of the St. John Eiver they are seen in the prominences 

 known as Blue Mountain and Broke-Neck, as well as several other hills 

 in the vicinity of Jones' Creek. These hills are principally composed 

 of highly crystalline felsite, the depressions being filled with fossilifer- 

 ous Silurian rocks resting unconformably upon them. On the eastern 

 side of the river, Huronian rocks, which are probably the continuation 

 of those on the north side of the Long Reach, extend up the south 

 shore of Belleisle Bay and as far east as Snyder Mountain, beyond which 

 they become obscured under the great mantle of Carboniferous rocks. 

 In the vicinity of the East Scotch settlement, and on the road to the 

 English settlement, these pre-Cambrian rocks have a breadth of three 

 to four miles, and conrprise felspathic, micaceous and talcose schist, 

 petrosilex and other felspathic rocks, with felsite ash conglomerate. 

 Small areas occur on CarmichaePs, Ryan's, and Lunn's brooks, where 

 the felsite and schist are well exposed, but the areas are limited 

 by the Lower Carboniferous and Millstone Grit sediments. In 

 Queens county, in the parish of Wickham, felspathic and petrosiliceous 

 rocks with black slate occur, which form ridges, surrounded by the 

 Cambro-Silurian beds of this vicinity. 



The general strike of all these ridges of pre-Cambrian rocks is very 

 nearly N. 65° E. Their physical characters and detailed structure 

 have been given in former reports. (See reports of 1870-71, 1875-6, 

 1816-11, 1811-18.) 



General 



distribution. 



Six troughs. 



II. Cambrian, or Primordial Silurian. 



The rocks of this age are developed principally to the east of the St. 

 John River. They occupy basins or trough-like depressions among the 

 older hills of pre-Cambrian rocks. The early history of these rocks 

 has been given in the General Report, 1870-71, under the heading of 

 " St. John, or Acadian Group." Since then their distribution has been 

 more carefully studied, principally by Prof. Bailey in 1877. They 

 were found to occur in six parallel bands, occupying basins, sometimes 

 of considerable but at others of very limited area. The most northerly 

 belt is seen on the St. John & Maine railroad, just south of Nerepis 

 station. Here the rocks consist principally of the purple sandstone 



