KmGSTOWJ!)^ SERIES EAST OF THE BO:^]SrBT. 337 



Lithologically the Warwick Neck exposures could be readily associated 

 with the northern extension of the Kingstown series as exposed in south- 

 western Cranston, and might therefore be considered as forming part of the 

 same series. They would constitute in that case the upper portion of the 

 Kingstown series in the northwestern part of the Narragansett Bay area. 

 This would make the Warwick Neck and Rocky Point exposures roughly 

 equivalent to the more eastern exposures mentioned in the following 

 paragraphs. 



Exposures on the western islands of the bay. The KiugStOWn SerioS appears tO bo 



not limited to the western shores of the bay. The strata exposed on (1) 

 Dutch Island, at (2) Beaver Head on Conanicut Island, toward the south 

 of Dutch Island, (3) north of Round Swamp on the northern half of the 

 island, (4) on Hope Island, and (5) along the western shore of Prudence 

 Island, north of the wharves, all seem to belong to this series. 



Thickness of strata between the Bonnet and Dutch Island The UearCSt poiut of approacll 



of the island exposures with those on the west shore is between Dutch 

 Island and Saunderstown, where they are distant 4,200 feet. Beaver Head 

 is about 5,400 feet from South Ferry, and the most western part of northern 

 Conanicut is 6,000 feet distant from the Hazzard quarry region north of 

 Saunderstown. While, therefore, it may appear rash to associate in one geo- 

 logical series strata so far disconnected, other facts make this relation more 

 than probable. Tracing the rocks of the Bonnet section northward on the 

 map, in accordance with the snggestions offered by the actual strikes of the 

 rocks exposed along the shore, it will be seen that the northward extension of 

 the Bonnet series must lie a considerable distance toward the east of Saun- 

 derstown, while the southern extension of the Dutch Island strata would 

 approach the western shore at the Bonnet. Traced in this way the Bonnet 

 section is found to approach the Dutch Island section within 1,350 to 1,750 

 feet. Assuming a dip of 60^ for this miexposed part of the section, the 

 Bonnet section underlies the Dutch Island section from 1,200 to 1,500 feet. 

 The dips, however, on the Saunderstown shore opposite the island do not 

 exceed 40^, while the western shore dips of Dutch Island are also usually 

 less than 50^, so that the two sections may possibly approach each other 

 within 975 to 1,200 feet. Considering this moderate interval of unknown 

 strata, and the absence of any signs to the contrary, the lithological simi- 



MON XXXIII 22 



