266 GEOLOGY OF THE NARRAGANSETT BASIN. 



River, west of the road, and north of the 2 0-foot- contour valley already 

 noted, are a number of exposures showing in general a strike of about 

 N. 20° E., dip 45° E. Overlying some of the more southeastern of these 

 exposures, on the west side of the road, is a bluish shale. The conglomerate 

 is also exposed east of the road. A third of a mile west of the mill pond a 

 long exposure beside the road west of the bend shows a strike of N. 25° E., 

 dip 30° SE. Overlying the conglomerate is a greenish shale. Just west 

 of the mill pond the strike is N. 70° E., and the dip almost vertical. 

 Northeast of the mill pond the conglomerate exposures northwest of Levins 

 Brook do not vary far from the horizontal, and the synclinal structure can 

 no longer be followed. 



The detection of the synclinal structure between Coles Station and 

 the mill pond, and the more horizontal position of the rocks to the north- 

 ward, is of some assistance in establishing the continuity of this more 

 eastern conglomerate, whose stratigraphical equivalents with the conglom- 

 erates in Warren, north of Bristol Neck, and in adjacent parts of Swansea, 

 can be easily determined. Indirectly also it is serviceable in determining 

 the position of the bluish-green shale series of Bristol Neck, as the following 

 notes may show : 



The wide distribution of the bluish-green shale series in Bristol Neck 

 has already been noted. From Warren, eastward along the first road lead- 

 ing- north, passing east of Belchers Cove and Warren River, bluish shale 

 occurs east of the road a third of a mile south of Kings Rock. Sandstone 

 occurs west of the road, and is also exposed in the northeast angle of the 

 first road leading toward the east. At the latter locality a few stray peb- 

 bles of large size are embedded in the sandstone. At Kings Rock, west 

 of the road, on the Massachusetts-Rhode Island boundary line, and also 

 northeastward, east of the road, are large exposures of the bluish shale. 

 The strike of these rocks is about N. 15° E. A mile south of Kings 

 Rock a road leads off eastward to Luthers Corner. Less than half a mile 

 along this road another branches off northward. South of this point a 

 considerable, area is covered by bluish and greenish shales, frequently 

 exposed. These shales are also exposed on the eastern side of the hill, east 

 of the road, at several points from a quarter of a mile north of the road 

 corner to half a mile northward, and they are found again a mile north of 

 the road corner, a quarter of a mile east of the road, near the State boundary 



