EASTONS POND. 303 



of the Paradise and Hanging- Rock series may seem rather forced, but they 

 appear to be the only ones consistent with knowledge obtained elsewhere 

 in the field, which rests on a more secure foundation. No effort has been 

 spared to secure a more ready and simple explanation, but the exposures 

 are not sufficiently numerous and conclusive, and the interpreter is driven 

 to theorizing where more exposures would make this unnecessary. 1 



ISOLATED CONGLOMERATE EXPOSURES NEAR EASTONS POND AND 



NORTHWARD. 



On the west side of the Eastons Point anticline it will be remembered 

 that there is evidence of synclinal structure, and that at the east end of 

 Eastons Beach the dip is about 15° to 20° E 



West of the northern half of Eastons Pond, below the greenhouses, 

 bluish sandstone, darker shaly rock, and some conglomeratic layers com- 

 posed of pebbles, not recalling the coarse conglomerate series, are found. 

 They do not seem to vary far from a horizontal position. 



Three-quarters of a mile northward, in the field, north of a farmhouse 

 north of the east-west road, much coarser conglomerate is exposed, with 

 quartzitic pebbles of the Paradise Rock type up to 8 inches in length, but 

 usually only 3 to 4 inches long. It seems to be part of an anticlinal fold 

 pitching northward about 10° and trending N. 16° E. On the western 

 side the dip is about 15° W. 



A somewhat similar conglomerate is exposed a mile northeastward, 

 west of the western road corners of a triangular plat of land formed bv the 

 public ways. The pitch here seems to be also low northerly, the strike 

 being apparently N. 7° W., dip very low west, but the exposure is not 

 suitable for the exact determination of these features. 



The precise relation of these exposures to the general shale series 

 northward and westward is not known. 



According to the interpretation given by Professor Dale (loc. cit), the 

 great Purgatory conglomerates overlie the Aquidneck shale series, but dip 

 under the Newport Cliff exposures. To the writer the cliff exposures appear 

 to belong to the horizon of the Sakonnet sandstones and the lower half of 

 the Purgatory conglomerates, though he does not know of an}- very con- 

 clusive evidence for either view. 



1 Consult, on the same area, T. Nelson Dale, Boston Soc. Nat. Hist., Vol. XXII, 1883, and Proe. New- 

 port Soc. Nat. Hist., 1885. 



