282 GEOLOGY OF THE NAEEAGANSETT BASIK 



northern exposure of these shales along the shore is at Browns Point, along 

 the northerly trend of the shore line. A second similar exposure occurs 

 where the shore turns toward the southeast. The strike of the more 

 northern exposure is N. 32° E., dip 45° E. The more southerly exposure 

 has a strike N. 20° E., dip 45° E. The rock is of a greenish color, and 

 has been cleaved like the rocks east of the brook. 



The next exposure of the series occurs almost east of the mouth of the 

 brook, a little south, near the 20-foot level on the hillside. A quarter of a 

 mile northward exposures occur along a road leading eastward up the hill. 

 From this point there is a succession of exposures extending northeastward 

 up the hillside. This line of outcrops crosses the road at one of its more 

 marked bends on the summit, continuing in the northeasterly direction 

 alono- the hilltop and down the northeastern slope to a point a short distance 

 north of the first road leading east. 



The series evidently underlies the whole of the hill east of Browns 

 Point. The ordinary appearance of the rock is that of a very fine-grained 

 whitish quartzite traversed by cleavage planes, usually a fifth of an inch 

 apart, along which black mica is abundantly developed. The result is a 

 general stratified appearance of the rock, the strike of the cleavage being 

 on the average N. 40° E., dip very steep, almost vertical. Behind the barn, 

 east of the angle of the road mentioned above, the rock is fine grained, 

 greenish, slightly banded with darker material. Southeast of this hill occurs 

 another elevation, not marked upon the United States Geological Survey 

 map, occupying the middle area of the quadrangle formed by the roads 

 northwest of Little Compton. The whole of this hill is also underlain by 

 the cleaved fine-grained whitish quartzitic rock. The exposures are most 

 frequent on the western and southern slopes. The more northern outcrops 

 on the western sides show a cleavage running about east-west; farther south 

 and southeast it runs about N. 25° E. The rocks are here evidently much 

 contorted and wrinkled. The stratification in places is clearly not in 

 agreement with the cleavage. It is very desirable carefully to work out 

 the real plane of bedding of this quartzitic rock and to determine its dip 

 and strike. The shore exposures farther southwest, however, suggest that 

 the general dip is southeasterly. 



South of Browns Point is a cove. At the headland forming its south- 

 ern extremity the rock is shaly. Exposures occur southward along the 



