234 



ANNALS XEW YORK ACADEMY OF SCIEXCES 



Interglacial Stages, Snow Retreats, 

 Higher Temperatures 



Postglacial 



20,000 to 34,000 



Acliev retreat 



a; 

 3 



Third Interglacial, Riss-Wiirm 

 60,000-100,000 





Second Interglacial, Mindel-Riss 

 240,000-400,000 





First Interglacial, Giinz-Mindel 

 100,000-160,000 







 



0" 



Human Culture Stages 



Age of Copper 



Neolithic 



Azilian 



Magdaleniau 



Solutrean 



Aurignacian 



Mousterian 



Acheulean 



Chellean 



Pre-Chellean 





bX) 



a; 

 '53 











Melative Time Estimates 



4, 000-5, 000 

 7, 000 



16,000-24,000 



20, 000 





o 

 o 

 o 



o3 







 



- 



20, 000 





Glacial Stages. Snow Advances. Low 

 Temperatures and Humidity 



s: 



5. E ^ 



» c = 



a Z' cq 



II Maximum 

 IV Fourth Glacial, Wiirm 



T Maximum 





.'2 





S 



!2 

 *5 









c 







'0 



5 

 02 



1—1 





