STRATIGRAPHIC RELATIONS OF THE ONEIDA CONGLOMERATE 3 1 



corresponds very nearly with a line extending through the vil- 

 lages of New Hartford and Vernon Center. It shows itself in 

 the water courses to the east of Utica, near New Hartford in 

 many places, south of Hampton village, also at Oneida Springs, 

 and the stone pound near Stony creek to the north and west of 

 Verona. . . It presents likewise a few of the large imperfect 

 fucoides, and no other fossil. . . In a practical point of view 

 this rock in Oneida county forms an important line of division 

 in the description of the rocks which occur to the north and 

 the south of it, dipping as the rocks do to the south and west. 

 . . [p. 282] In no part of Oswego (county) were we able to 

 discover the millstone grit as a solid rock or mass. We had 

 reason to believe that it had existed near Cleveland [on Oneida 

 lake], from the prodigious number of large fragments or blocks 

 which are found to the east of the village, on the high bank and 

 in the bank and on the shore of the lake, as well, likewise, about 

 a half mile from that place to the east, on the road to Rome. 

 In the summary of this report, Vanuxem states [p. 284] : 



" Millstone grit " — All the preceding rocks are below this 

 mass, all passing under it. This rock is the first mass of pebbles 

 met with in the series. The pebbles are of glassy quartz, same 

 as those met with in the Calciferous, only more waterworn. 

 Nothing extraneous in this rock, but pyrites and a few large 

 imperfect fucoides. 



North of Wood creek and Oneida lake, the green [=Oswego] 

 and red sandstone [^Medina] follow the last described series 

 [=Lorraine], but south of the Mohawk, the grit follows that 

 series [=Lorraine] and upon the grit reposes the protean [=Clin- 

 ton] group. The gray and red sandstone, within the limits 

 examined, presenting no well defined common character of union 

 with the protean group, requires more extended observation 

 west, to remove the ambiguity occasioned by the absence of the 

 grit in Oswego [county]. 



In the report as above given, Vanuxem extended his observa- 

 tions farther west than his predecessors and examined the 

 Oneida at its type section. It is clear, however, from the above, 

 that he regarded the Oneida as above the red Medina shales 

 which follow the Oswego sandstone. 



In the annual report for 1839, page 242, Vanuxem states what 

 he considers to be the proper correlation westward of the Oneida, 

 as follows : 



The " millstone grit," which is 30 and more feet in thickness 

 in Herkimer and Oneida, gradually attenuates in going west- 

 ward, being from 4 to 5 feet at Rochester. The materials of 

 which this rock is formed, gravel and sand, prove that their 

 source was easterly. In Herkimer and in the eastern part of 

 Oneida, the pebbles are larger and the mass thicker, the sand 

 increasing going west, whilst the pebbles diminish in the same 

 direction. Thus, in Cayuga the pebbles are rare, and I know 



