EHODB ISLAND COAL MEASURES. 169 



EXPOSURES IN THE TOWN OE SEEKONK. 



The lowest strata exposed in this town occur along the east bank of 

 Tenmile River. 



Section at Hunts Mills. — In Decembcr, 1892, a pit was sunk into the bed of 

 the stream at this point for the installation of a tnrbine water wheel. A bed 

 of coal in the following stratigraphic position was penetrated, the overlying 

 beds being exposed in the banks of the river: 



Section at Hunts Mills^ Rhode Island, 



Feet 



Sandstone, of tlie graywacke type. Kear the falls are large impressioBS of 



unidentified plant steins - 40 



Conglomerate, naedium-sized pebbles, quartzose 5 



Sandstone 10 



Ooalj anthracitic, showing slickensides, local crushing, and gash veins, with a 



white asbestiform mineral 3| 



Shale, black, varying from a fine-grained compact argillite to an arenaceous rock; 

 thickness unmeasured. 



These strata dip gently to the north of east. The coal, uniformly like 

 that on the east side of the Seekonk River, is much less gi*aphitic and 

 altered than that which comes from the west of that line in the metamor- 

 phosed belt. It is granular and is traversed by small quartz and calcite 

 veins. The strike of this bed w^ould carry the coal along the present path 

 of the Tenmile River northward for several miles. No attempt has been 

 made to use this coal or to explore the underlying shales at other points in 

 this vicinity for other like deposits. 



North of Hunts Mills, and about a mile south of Lebanon Mills, a 

 heavy-bedded sandstone crops out on the east bank of the river. 



In the northern part of the town, strata approximately on the horizon 

 of the Tenmile River beds, and subjacent thereto, have been explored for 

 coal. One-fourth of a mile east of Perrins Station, on the Fox Point Rail- 

 road, is an outcrop of conglomerate and sandstone near the horizon of the 

 upper part of the Hunts Mills beds. 



Perrins anticline. — Betwecu Porrins aud East Junction, in the cut on the 

 railroad to Fox Point, is an anticlinal exposure of the lowest beds seen in 



