190 



Nerv York State Museui 



Table i 



Geologic time scale for New York State 



Era or 

 Group 



Major 

 Divisions 



Period or 

 System 



Epoch or 

 Series 



Age or Stage 



Ceno- 

 zoic 



Late 

 Cenozoic 



Pleistocene or Glacial 







'5 



Late 

 Mesozoic 



Upper Cretaceous 



Upper Cretaceous 

 beds 



Representatives of parts of 



Monmouth, Matawan and 



Magothy formations 



o 



Lower Cretaceous 



Upper Potomac 

 series 



Raritan and Cliffwood 

 formations 





Early 

 Mesozoic 



Upper Triassic 



Newark series 







Late 

 Paleozoic 



Pennsylvanian 

 ( Upper Carboniferous) 



Pottsvillian 



Sharon shale 





Olean conglomerate 





Middle 

 Paleozoic 



Mississippian 

 (Lower Carboniferous) 



Bradfordian 



Knapp beds 





Oswayo beds 





Cattaraugus beds (incl. 

 Kilbuck, Salamanca, 

 Panama and Wolf Creek 

 conglomerates) 





Devonian 



a 

 a 



Chautauquan 



Chemung beds (Catskill 

 sandstone, local facies) 





Senecan 



Portage beds (Naples beds, 

 Ithaca beds, Oneonta 

 beds — local facies) 





Genesee beds 



'5 



Tully limestone 



o 





Erian 



Hamilton beds (incl. Mar- 

 cellus shale) 





Ulsterian 



Onondaga limestone 





Schoharie grit 





1 



Oriskanian 



Esopus grit 





Oriskany sandstone 





Helderbergian 



Port Ewen limestone 





Alsen limestone 





Becraft limestone 





New Scotland limestone 





Kalkberg limestone 





Coeymans limestone 

 (Upper M a n 1 i u s or 

 Keyser) 



