/=e*/<j'r>er</s //*r*s/en* \ 







Terrfirc"'''' fat'**"* 



h 

 ^ 



5 j/f#reu/> 







HvJso" 5't^t 



w /r, 





1110 NEW YORK STATE MUSEUM 



Hall, and he attributed these differences to the unlike conditions 

 under which sedimentation took place and to the unequal depth 

 of the sea. Happily, however, the " Coralline " was described 

 as a distinct formation. 



* The position, in the rock series, given to the " Coralline " at 

 Schoharie appears to have been based chiefly on its relations to 

 the overlying and underlying 

 beds which Hall regarded as 

 the Salina and the Clinton re- 

 spectively. With these deter- 

 minations it was impossible to 

 conclude that the " Coralline " 



Fig. 1 Section at Sharon Springs, Schoharie 



was other than the Niagara, county (After Mather 1843) 

 From its similarity to the Salina in western New York, 

 the rock above the "Coralline" could be readily con- 

 fused. But why the underlying shales, clearly resting on the 

 Lorraine beds, were called Clinton was not explained. Mather 1 

 had already published a section at Sharon Springs, Schoharie co., 

 Where the Salina shales resting on the Lorraine beds and below 

 the waterlime were designated as the Salt group, and Vanuxem 2 

 had shown the impossibility of any formation between the Salina 

 and the Lorraine at the same place. He says : " The Onondaga 

 salt group [Salina] and the Frankfort slate [Lorraine] are so 

 near to each other, both being undisturbed, as to preclude every 

 other deposit." Though Hall states that the " Coralline " could 

 be traced continuously from Herkimer county to Schoharie, it 

 is very evident from the above citations as well as from his own 

 published sections, 3 that it could not be traced below the Salina, 

 to which position it had been assigned. In each of the three sec- 

 tions herewith given between Sharon Springs and Litchfield, 



1 Geol. N. Y. 1st Dist. 1843. pi. 25, fig. 3. 



2 Geol. N. Y. 3d Dist. 1842. p. 79. 



3 Palaeontology of New York. 1852. 2:15. The first section given as in the 

 town of Canajoharie, Montgomery co., must refer either to the section on Cana- 

 joharie creek, near Cherry Valley in Otsego county, or more probably" to the 

 section north of Cherry Valley near Salt Spring ville, as the highest beds in the 

 town of Canajoharie are the Lorraine. Likewise the section above Wick's 

 Store cited as in Montgomery, is in Herkimer county. This place is now known 

 by the name of Deck. 



