448 NEW YORK STATE MUSEUM 



12 Small gastropod, too imperfectly preserved for farther identi- 

 fication. 



The junction between the Trenton and Calciferous stages is shown 

 at the fault line to the northeast of this section. Where the Glen- 

 ville road crosses the fault Hne are extensive quarries known as 

 the Weatherwax quarries. 



2E Section of Weatherwax quarry 

 £3 Very thick, massive, dark blue crystalline 

 limestone weathering grayish^ and readily disin- 

 tegrating. Contains Brachiopoda and Monti- 

 culipora (Prasopora) lycoperdon 

 Say, in abundance. Trenton. 3' 8"=i4' 4" 



E2 Layer similar to no. 3. 2' 8"=io' 8" 



E^ Layers exposed in the bottom of the quarry 

 and ledge in side of road east of quarry. Thinner^ 

 fine grained, dark blue toward the base. About 

 8 feet in quarry and ledge. 8'= 8' 



The exceptionally crystalline structure and great thickness of no. 

 2 and 3 are unique. They resemble to some extent the gray 

 crystalline limestone which caps the Trenton formation at Trenton 

 Falls but are darker and less crinoidal. The loose fragments of 

 the rock about the quarry seem to disintegrate rapidly. They 

 become spongy and the fossils they contain are rendered obscure. 

 The following species were identified from no. 2 and 3 of this 

 section: 



1 Monticulipora (Prasopora) lycoperdon Say (aa) 



2 Bryozoan, probably Escharapora recta Hall (r) 



3 Protarea vetusta Hall (r) 



4 Rafinesquina alternata (Con.) Hall and Clarke (aa) 



5 Plectambonites sericea (Sowerby) Hall (c) 



6 Orthis (Dinorthis) pectinella (Emm.) Hall (c) 



Southward from this point these upper massive layers may be 

 traced for some distance along the fault line. Near the point where 

 the Chuctanunda creek meets the fault line there is an exposure 

 of nearly 30 feet of thin bedded, dark blue, fossiliferous limestone 

 with some intercalations of black shale and containing immense 



