BUFFALO SOCIETY OF NATURAL SCIENCES 



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however, very difficult to make any distinction between a possible 

 Gardeau sandstone and a possible L,aona sandstone. 



The gullies opening into the east branch of Cazenovia creek, 

 above South Wales and into Buffalo creek above Wales show 

 excellent exposures of the sandstones which may possibly be 

 referred to the L,aona horizon. At Holland, east of the village, 

 there is a long series of shales and sandstones of the Gardeau 

 formation. The shales are gray, non-fissile, breaking into 

 irregular lumps without cleavage planes. Interbedded with these 



F. Houghton, Photo. 



Fig. 33. Bluestone quarry at Portageville, in the Nunda sandstone. Note 

 the great thickness of the beds. 



are beds of dense, black shales with cleavage planes. Sandstones 

 occur in heavy beds forming cascades and these are separated by 

 beds of shale. The exposure at South Wales, is similar. In 

 both, the uppermost sandstone is succeeded by shale identical in 

 all respects with those below the sandstones. To all appearances 

 these sandstones are identical with the thinner layers interbedded 

 in the formation of lower down, and there seems little reason to 

 consider them a distinct formation. 



