'M'2 



NKW" VdUK S'l'A'IK Ml'SKr.M 



Ilcds 11 ;ni(l 1(1 of \\\v Kondoiil section sliow imid nnck striic- 

 liirc of (lillci-ciit sizes, 'i'licst' rciilurcs \\:\\v hci'ii seen in other 

 reiiions as well, thouiili the IhmIs showinii them (h) not noeessarily 

 iK'long to llie same zone evervwliei-e. Occasional ly i'ij)ple marks 

 are shown as iu the Wilbur IJridne section. IUmI 1) is tilled with 

 L e p e r d i t i a a 1 1 a , coutainin<^ also B e y r i c h i a sp. ?, 

 M o d i o 1 o p s i s d u b i a and 8 p i r i f e r v a u u x e m i . This 

 is a Manlins fauna and reference of these beds to the Kondout 

 appears to be wholly on lithic grounds. Since the two for- 

 mations are so clost^ly related, it does not matter much where 

 the line between them is drawn. The middle ledge (5a) contains 



r t h o t h e t e s i n t e r s t r i a t u s and C a m a r o t o e c h i a ? 



1 a m e 1 1 a t a , two typical Cobleskill >si)ecies, but also found in 

 the Rondout in the Schohane region [see Section 2]. 



CohlcskiU 



Dark, often imj)ure, fossiliferous lime sandrock, with 

 an abundance of Halysites. At Binnewater it is 

 14 feet thick, while at the section near Wilbur 

 bridge it is nearer 18 feet. In both of these locali- 

 ties it is underlain by the Kosendale cement bed, 

 but at Rondout this latter is absent, if my inter])re- 

 tations are correct, and the upper 5 to 7 feet of the 

 Cobleskill i*est directly on the Normanskill sand- 

 stones. Northward the Cobleskill disappears and 

 is overlapped by the Rondout as shown by Hart- 

 nagel. The relationship of the strata at Rosen- 

 dale and Rondout are shown in the following 

 diagram [fig. 204]. 



Feet 



14-18 



.. -^ ^ -^ ^-^_ ^ -^^ ^ ^ ^^ ^.^„ _^ 



Jr ¥^-~ if^ -p\ ^: h^ w^-Jirir ir- r- r; r"l 



J.. -:</; — 4( -^ dii' ^ 



h II i^ :3L 



V. B 



Vin. 20t l)iaj,Tiiin showiii}^ relationsliip of Champlaiiiic and Sihiric strata in T'^lstor 

 county. U KoseiKlale. \i Hinncwater, W Wilbur bridj^e, V.U. Vli^'-litber«-, KinjfS- 

 ton. a-n\ Normanskill slialc, /*, Shawangunk contjlonicrate, r, Hiyli Falls shale, 

 <l, Hinncwater sandstone, r-r', Wilbur linu'stone, /"-/', Hosendale waterlinic, t/-(/', Cobles- 

 kill, //-/(', Kondout waterlirac, i-i', Manlius 



RosenOale ccnicHt 



Fine bedded ^ray lime mudrocks with I he ju'oper ad- 

 mixture of silica to make it a natural cement rock. 

 At liosendale 22 fe<M are quarried, while near AVil- 



10-21 



