426 New York State Museum 



Kilbuck conglomerate (Glenn '03) named from the oc- 

 currence at Kilbuck, near Salamanca in Cattaraugus 

 county. This conglomerate is not over ten to 15 feet 

 thick and has much the same flat pebble character as the 

 underlying Salamanca. This third conglomerate is fol- 

 lowed by a variable thickness of shale. The probable oc- 

 currence of an unconformity at the top of this forma- 

 tion has been suggsted (Glenn). 



The Oswayo beds (Glenn '03; Fuller) are olive-green 

 to rusty colored sandy shales with here and there thin 

 layers of sandstone with limonitic seams or incrustations. 

 These greenish limonitic shales have a thickness 

 of 160 to 250 feet. Conditions were favorable to the ex- 

 istence of life when these shales were deposited and there 

 is a fairly good representation of marine invertebrates, 

 the brachiopod Camarotoechia allegania being character- 

 istic and serving as an excellent horizon marker. The 

 Oswayo beds were named from Oswayo creek in Cat- 

 taraugus county. 



The Knapp beds (Glenn '03) follow with a thickness 

 of 60 to 105 feet and consist of two beds of conglomerate 

 with interbedded shales. The formation has the strati- 

 graphic position of the Subolean of Pennsylvania. It is 

 not found east of Knapp creek station, Cattaraugus 

 county, from which the name is derived, but is probably 

 the equivalent eastward of grits and shales beneath the 

 Olean. The shales of this formation are sandy and olive- 

 green or rusty brown and in several places marine in- 

 vertebrates have been found. The coarser part of the 

 formation is loosely cemented conglomerate, with flat- 

 tened quartz pebbles, frequently limonitic and fossilifer- 

 ous in most places. 



