FROM SAUNDERSTOWN TO WICKFORD. 249 



carbonaceous shales south of Saunderstown; dip, 50° E. Farther west the 

 sandstone contains conglomeratic streaks; dip, 65° E. Still farther west is 

 sandstone with a few scattered pebbles, rarely 2 inches long. The coarser 

 sandstones contain fragments looking like altered clastic feldspar grains, 

 obtained from some more ancient granitic area. Coarser and darker fine- 

 o-rained sandstones occur westward as far as the road angle mentioned 

 above. The next exposure of the section lies on the western slope of 

 Barbers Height, on the north side of the road toward Hammond Hill and 

 three-fourths of a mile from the shore; strike N. 10° W., dip 80° E.; coarse 

 white sandstone and darker finer-grained rock with black mica. On the 

 south side of the road, hardly a quarter of a mile farther westward, 

 both kinds of sandstone occur. The coarser contains granite pebbles. A 

 pegmatite dike is here poorly exposed. 



Northward along the trend of the hill called Barbers Height the 

 coarse white sandstones and dark finer-grained rocks continue to be 

 exposed. The darker, more carbonaceous, fine-grained shaly rock has a 

 slightly purplish tinge at several points along the roadside. The most 

 marked change toward the northern end of the height is a more north- 

 westerly strike, corresponding to the change in the trend of the granite 

 hill on the southwest, and a much lower eastward dip, usually not exceeding 

 40° E. 



At the angle of the road, 1J miles south of Hamilton, on the way to 

 Hammond Hill, there are numerous exposures. The dips are usually about 

 30° E. The strikes are northerly, but variable. No sharply defined bed- 

 ding planes assist in determining the plane of stratification. A pegmatite 

 dike occurs behind a barn near the southeastern end of the set of exposures. 

 It is one of the most northerly of these pegmatite dikes in the Carboniferous 

 area. About a quarter of a mile east of this locality the strike is N. 10° W., 

 dip 40° E., well shown. Northward less than a quarter of a mile, at the 

 angle of the road, the strike is distinctly west of north, how much is 

 unknown, perhaps N. 20° W., dip 30° E. Northeastward in the field the 

 strike is N.-S., dip 30° E., well shown. The last exposure, lying north 

 of a stone wall, shows a change of strike to N. 25° W., dip 20° E., well 

 shown by dark carbonaceous, fine-grained, shaly rock overlying the 

 coarser whiter sandstone. Another of these marked changes of strike 



