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at an angle of between 12° and 15°. The main mass of the rock 

 in the quarry is a dull red siliceous sandstone, of a uniform 

 grain, having numerous interspersed specks of mica. 



In the neighbourhood of Newark the more arenaceous variety 

 of the red sandstone is moderately abundant, affording much 

 good building stone. About half a mile north of the town 

 quarries are extensively worked, giving a good exhibition of the 

 composition and arrangement of the strata. 



The rock here is for the most part a siliceous sandstone of a 

 dull brownish-red colour, and an even grain. It contains a little 

 mica. Alternating with the beds of sandstone are thinner layers 

 of red, argillaceous shale, which soon disintegrates upon exposure 

 to the air. In some of the lower beds are thin plates of carbona- 

 ceous matter, and a minute seam of a pure ligniform coal 

 between one and two inches in thickness. The dip of the 

 planes of deposition in this vicinity is about 10° to the northwest. 

 Between Newark and Paterson the rock displays little or no 

 departure from the usual character which it preserves further to 

 the southwest in the same belt, being the usual mixture of red 

 shale and more or less arenaceous red sandstone. Its dip is 

 every where the same, or northwest between 10° and 15°: no 

 change in this respect is perceptible as we approach the trap 

 ridge to its west. Between East and West Bloomfield villages 

 are some quarries affording a moderately good building stone. 

 The rock is the common red sandstone of the region divided by 

 thin interposed bands of red shale. It displays a northwest dip, 

 the angle being 12°. In one of the sandstone beds there is seen 

 a thin layer of coal, of a variety approaching to lignite. 



Near the Passaic Falls at Paterson, the sandstone is seen 

 under a considerable diversity of aspect, varying from a coarse 

 conglomerate, containing numerous pebbles of white and reddish 

 quartz, limestone, and other rocks, to a close-grained, siliceous 

 sandstone, moderately well adapted for building stone. There 

 are occasional interposed layers of red shale. This conglomerate 

 and sandstone rock bears a near resemblance to that on the 

 Delaware below Centrebridge, and would appear to occupy 

 a corresponding position in the general series of beds which 

 together constitute the red sandstone formation. 



To the southwest of Paterson, at the Little Falls of the 



