EHODE ISLAND GOAL MEASURES. 175 



lying sandstones, indicating the abrupt turning of the strata eastward in 

 the manner above referred to. Half a mile east and a little north of this 

 outcrop, coarse pebbly grits dip gently S., indicating minor folds in this part 

 of the field. Whether these exposures are reappearances of the Seekonk 

 conglomerate and the associated thick sandstones is an open question. 

 The general structure of the area would place the strata at the top of the 

 Seekonk beds, and they are so indicated on the map. 



Three miles due south of these outcrops are two isolated outcrops of 

 gray and locally pebbly sandstone. The westerly one forms a low roche 

 moutonnt^e on the land of Mr. Fred. T. Haskins; the eastern one, at the 

 corner of the road, forms a massive knob 25 feet high. In the southeastern 

 corner of the area represented on the Providence atlas sheet, in Swansea 

 and partly in Barrington, Rhode Island, are outcrops of sandstone and 

 conglomerate striking NNE.-SSW. and standing at high inclinations. At a 

 few points the sandstones rise into knobs 30 feet high. A slaty cleavage 

 is sometimes shown striking N. 66*^ W. and dipping N. Where pebbles 

 occur they vary from half an inch to an inch in diameter. Between 

 these beds and the last-described outcrops there lies the broad, shallow 

 valley of the Warren River, partly drift filled and indicating the existence 

 of some underlying, softer, valley-making beds along the median or anti- 

 clinal line between the Dighton and Taunton S3mclines. 



BEDS NORTH OF THE TENMILE RIVER IN ATTLEBORO. 



Thus far there have been described a series of strata continuous along 

 their strikes on the south and east of the Tenmile River and along the 

 Providence River, and a section upward to the coarse conglomerates of the 

 Dighton group. Similar strata are less perfectly shown in Attleboro north 

 of the Tenmile River and the Perrins anticline. On the south side of the 

 stream and the axis named the beds dip gently southward, but wherever 

 they appear on the north they have steep northerly dips. On the grounds 

 of the American Millenium Association, near Hebronville, a well was sunk 

 10 feet in drift and 20 feet into a gritty sandstone, but the first ledges of 

 diagnostic value appear along the banks of the Tenmile River in Dodge- 

 ville, where sandstones are seen dipping steeply northward. Half a mile 

 west of the railroad station, and over 2,000 feet below the coarse conglom- 

 erate in the Attleboro syncHne, is an isolated exposure of coarse gi*ay 



