Table of Pleistocene Deposits and Possible Correlations. 









Probable ] 



altitude 



ofland ; 

 relative to ; 



present 



Possible correlations. 



De.«ri-iijtioii of deiMwits ! Nnnies used in 

 jji tins part 

 northeastern New FaigUuid. j of New England, l 



Fuller. AVcKidwiirth. ' 



i 



KuIUt. I 



\'eatch. 



Calvin, 

 CUiamherlin, 

 and others. 



I ; 



1 

 1 



seaU'vel 

 (feet). I 



r 



Southeastern 

 Massachusetts. 



Soutlieastern 

 Massachusetts. 



Long island and 

 Fishers island. 



L(ing isUuid, 



Mississippi 

 valley. 



Moraines and irregular sand and 

 gravel dei)osits irregularly dis- 

 tribntod. 



Local post-Wis- 

 CDUnin glacia- 

 tion. 



1 



Not repre- 

 sented. 



Not repre- 

 sented. 



Not repre- Not repre- 

 sented, sented. 



Probably late 

 Wisconsin. 



Clays, sand and gravel deltas and 

 oiitwash deposits (0 to 100 + 

 feet thick). 



W i s c n s i n re- 

 treatal de- 

 posits. 



~ 100 



1 



W i s c. n s i n 

 retreatal de- 

 posits. 



Champlain. 



A^'isconsin 



outwash. 



Wisconsin 

 outwash. 



W i s c n s i n 

 retreatal de- 

 posits. 



Thin till, moraines, eskers, and i Wisconsin, 

 kames (0 to 20 feet thick). i 





Wisconsin till. 



Third glacial. 



Wisconsin till. 



AVisconsin till. Wisconsin till. 



Unconformity. 





4 60 + 



— at 

 Boston to 

 — 250 in 



Maine. 



N deposits 

 recognized ; 

 mainly pe- 

 riod of ero- 

 sion. 



. Vineyard in- 

 terval. 



Period of ero- 

 sion. 





Peorian. 



Extensive deposit of fossiliferous 

 marine clay, with some associ- 

 ciated sand. 



"Ledaclay." 



Tisbury 

 (Manhasset). 



lowan till. 



UNCONFORJtITY. 





(?) 



Sangamon. 



Coarse stratified and unstratified 

 gravels (100 + feet thick). 



(Uimamed.) 



— 100 



Unnamed 



sand. 



Tisbury. 



Upper part of 

 Manhasset. 



Montauk till. 



Herod gravel. 

 (Lower Man- 

 hasset. ) 



(Placed in 



lowan.) 

 Not 



recognized. 



(Placed in 

 lowan. ) 





Till (inclnding drumlins) (20 to 

 300 + feet thick). 



Montauk. 



o 



Montauk drift. 



Gay Head in- 

 terval. 



Illinoisan. 



Stratified sand and gravel (10 + 

 feet thick). 



(Only exposed at 

 few points on 

 the coast. ) 



— 10± 



Herod gravel. 



i 





Stratified clay (a few feet). 



(Only exposed at 

 W"i n t h r p , 



Mass.) 



— 10± 



Gardiner clay. 



i 



Sankaty. 



Jacob sand. 

 Gardiner clay. 



Sankaty. Yarmouth. 



i 



TJnconfokmity. 





+ 200 + 







Jamico gravel. 



Jamico gravel. 



Kansan. 





Erosion uncon- 

 formity. 



Erosion uncon- 

 formity. 



Aftonian. 



Very old till. 



(Unnamed. ) 





Mannetto (?). 



Not recognized. 



Mannetto 



gravel. 



Mannetto j Pre-Kansan. 

 gravel. 1 



Unconfobmitv. 





+ 400 + 







Erosion uncon- 

 formity. 



Erosion uncon- 

 formity. 



1 

 t 

 1 -^ — 













Cretaceous 



clay. 



Cretaceous 



clay. 





