34^ ^ NEW YORK STATE MUSEUM 



it is but natural that we should expect to find in eastern New 

 York manifestations of Salina time rather than the Medina and 

 the Clinton. The so called Clinton quartzites (=Binnewater quart- 

 zites) lying above the red shales were so designated because they 

 are in some respects similar to the Clinton formation of western 

 New York, and probably also because of their similarity to the green 

 shales with iron pyrites lying beneath the Cobleskill in Schoharie 

 county which were formerly also correlated with the Clinton. In 

 this connection it is interesting to note that the view as given above 

 was held by Mather.^ 



AVith this correlation in view, it follows that, if the quartzite 

 with the iron pyrites in eastern New York is the equivalent of 

 the green shales of the Schoharie section then the quartzite of 

 eastern New York is Salina and not Clinton, since it is known 

 that the green shales of Schoharie county are of an age not 

 earlier than late Salina. South from High Falls the quartzite 

 below the Wilbur limestone becomes more calcareous and of a 

 shaly nature. At Accord, a few miles south from High Falls, the 

 shales are seen in the cut on the Ontario & Western Railroad. 

 At this place the beds are light colored, soft, argillaceous shales 

 with considerable mineral matter. They are exposed for a thick- 

 ness of i8 feet. Southwest from this point there are no favorable 

 exposures for the examination of these shales in New York. 



If we regard the red shales above the Shawangunk grit and con- 

 glomerate as Salina in age, it is quite probable that the Shawangunk 

 in this portion of the State is much later than has been generally 

 supposed. Recent studies indicate that the Shawangunk represents 

 the invading basal member of the Salina series. 



Poxino Island shale 



This is the term applied to irregular bedded, buff colored, 

 calcareous beds which are exposed just across the New York 

 State line in the Nearpass section in New Jersey and farther 

 south. At the Nearpass section they are but obscurely shown 

 for a thickness of i foot, and they here form the lowest member 



iGeol. N. Y. ist Dist. 1843. p. 353, 354- 



