New York State Education Department 



New York State Museum 



John M. Clarke Director 



Bulletin 82 



PALEONTOLOGY 12 



GEOLOGIC MAP 



OF THE 



TULLY QUADRANGLE 



The formations represented in this very interesting area extend 

 from near the top of the Sihiric continuously upward into the Upper 

 Devonic. The region is one of many fine exposures and though the 

 topography has been in some measure modified by the accumulations 

 of the soil cap, yet here are many typical and classical outcrops of 

 the New York formations. It is moreover within easy reach of Syra- 

 cuse and on this account it is believed the map will be found specially 

 useful to the many students of geology in that city and scattered 

 elsewhere over the neighboring country. 



The units of sedimentation here described may be grouped as 

 follows : 



r Ithaca 



AT ^ . ( c ■ J Poi'tage 



JNeodevonic - benecan i ^ 



( I Genesee 



LTully 



Mesodevonic " 



Erian 



r Hamilton 



I 

 i 



[Marcellus 



Ulsterian Onondaga 

 [Oriskanian Oriskany 



Paleo 



de- -{ 

 vonic ! Helderbergian 



Helderberg 



Ontario or 

 Siluric 



fManlius 



- Layugan^ 



[Salina 



Ithaca flags and sandstones 



Sherburne flags 



Genesee shale 



Tully limestone 

 r Moscow shale 

 -' Ludlowville shale 



Skaneateles shale 

 j Cardiff shale 

 I Marcellus shale 



Onondaga limestone 



Oriskany quartzite 

 j New Scotland limestone 

 ( Coeymans limestone 

 fManlius limestone 

 ^' Rondout dolomite 

 { Cobleskill dolomite 

 ( Bertie dolomite 

 I Camillus shale 



