254 GEOLOGY OF THE NARRAGANSETT BASIN. 



The bed is rather bluish and dark in color, and contains very angular 

 and rather separated fragments of white quartzite, producing a striking 

 effect on account of the differences of color and the consequent distinctness 

 of outline of the fragments. This effect is heightened by the comparative 

 rarity of the bits. From this cluster of houses a short footpath leads 

 west up the steep hill to the house of Mr. Alexander McTeer. Northeast 

 of his house an equally striking exposure is met, the rock here being a 

 great mass of very distinctly outlined, very numerous angular fragments 

 of quartzite embedded in a slightly darker cement. From this point the 

 basal Carboniferous conglomerate forms the northeastern face of the hill, 

 the underlying quartzites being often well exposed just southwest of the 

 brow of the hill. It often requires close observation to distinguish quartz- 

 ites, where brecciated in situ, from the overlying breccia- conglomerate 

 series which forms the base of the Carboniferous. Southwest of the road 

 corner, where the present western border of the Carboniferous area makes 

 a sharp curve toward the east of north, the underlying beds are of a pecu- 

 liar greenish rock, often seen northward, as far north as the Cumberland 

 district, where it is copper bearing. The quartziferous basal layer with 

 angular fragments lies west of the road. At the edge of the roadbed 

 southwest of the road corner mentioned, on the east side, the overlying 

 carbonaceous black shaly rock is exposed, dipping under a coarse sandstone. 

 Strike N. 30° W., dip, as might be expected, 50° E. The presence of this 

 carbonaceous bed so near the border of the Carboniferous basin, and so 

 near the base, is very interesting, especially since the basal bed is so 

 conglomeratic. 



The basal quartzitic conglomerate beds are well exposed west of the 

 road north of the road corner already mentioned. They rest here on 

 granite. There evidently is a sharp curve in the border line. The expo- 

 sures can be followed back of the house through the woods for a sixth of 

 a mile. At one exposure along the roadside the basal bed contains granite 

 pebbles over a foot in diameter. After this the basal series must be fol- 

 lowed along the east side of the road through the woods. Here the rocks 

 are a coarse quartzitic sandstone. Pebbles are not numerous, and as a 

 rule they are rather small. The sandstone can be readily followed through 

 the woods to a fine waterfall, the existence of which would not be suspected 

 from the road. Here it is well exposed; strike N. 40° E., dip 60° E. Thin 



