MEM. MUS. COMP, ZOOL 



70" 2 0' 



GEOLOGY CAPE COD. PLATE 8 



AT 13' 



EXPLANATION 



it ± -*_ 





Swamps (fresh) 

 (Probably contain peat) 



Marshes (salt) 

 (Probably contain peat.) 



Beach and dune sand and gravel 



Sand and gravel of outwash plain corre- 

 lated with Nantucket moraine 



Jce contact slopes at head 

 of outwash plain 



< 



z 

 or 



> LU 



H 

 < 



a 





Sandy drift in fosse 





Drift, thin, overlying older deposits 



1 



\ :, 'yJ^&'-T' ■;■ ';;. 





Nantucket moraine 

 Corrugated moraine, submarginal, mainly 

 folded pre-Wisconsin beds overlain by thin 

 Wisconsin drift) 



70*2 



Base from U. S. Geological Survey topographic 

 maps of Muskeget and Nantucket quadrangles 

 reprinted from earlier editions without revision. 



70 00' 



4-1 13' 



GEOLOGIC MAP OF NANTUCKET, MASS. 



69°57' 



Geology by J. B. Woodworth, 



U. S. Geological Survey, 1915-1916 



Scale 6-2 5C 



1 "5" O 



6 Kilometers 



Contour interval 20 feet. 

 DatuTTh is niearv sea- level- 



