Plate 12 



GEOLOGIC 

 FORMATIONS 



Catskill and 

 Oneonta sand- 

 stone conglom- 

 erates 



Sherburne flags 



Hamilton and 

 Marcellus shales 



Onondaga lime- 

 stone 



Esopus grit 

 The Helderberg 



series 

 Shawangunk 



conglomerate 



Hudson River 



shales, sand- 

 stones and slates 



Wappinger lime- 

 stone 



Poughquag 

 quart zite 



Storm King J| 

 .granite , 



The Highlands 

 gneisses 



The Catskill ' 

 mountains 



x^shokan 'reservoi 



Hamilton escarp- 

 ment 



Esopus creek 



High Falls 



Rondout creek 



Shawangunk 

 moimtains 

 Wallkill river 



Hudson river 



New Hamburg 

 Wappinger creek 



Fishkill creek 

 Newburgh 



Breakneck 



mountain 



Storm King 

 mountain 



Bull mountain 

 Crows Nest 

 Foundry brook 



Cold Spring 

 West Point 



Relief map of the region from the Catskill mountains to the Highlands 

 showing the principal physiographic features. (The original model shows 

 also the areal and structural geology.) (Taken from model made in the 

 physiographic laboratory of Columbia University by Messrs Billingsley, 

 Grimes and Baragwanath) 



