DEPOSITS OF THE LAKE CHICAGO BASIN 



station 32 (Plate I) 

 4100 feet north of Foster Avenue. Surface 595 feet A.T.; 15 feet A.L.M. 



41 



Strata 



Deposit 



Depth 



Remarks 



II 

 I 



Sandy loam 



Boulder clav 



12 

 168 



180 



No life. 





Total thickness.... 



■ 



B. LINCOLN AVENUE TO DEVON AVENUE 



station 33 (Plates I, XVII) 



500 feet south of Devon A venue. 595 feet A.T.; 15 feet A .L.M. 



Strata 



Deposit 



Depth 



Remarks 



xvn 



Silt and loam 



20 



32 

 38 





XVI 



Silt 





A. XV 



Peat 



Interstratified with thin beds of 



B. XIV 



Occasional sand pockets 



sand. 



Rarely as thick as 12 inches. 



Very thin layer. 



Anodonta and wood on top of this 



layer. 



With wood and Sphaerium. 



xm 



Gray sand 





C. XII 



Silt 



6 



4 



4 



2V 2 

 11 

 1 

 6 



4 



4 

 44+ 



180 



D. XI 



Sand, gray 



E. X 



Silt 



F. IX 



Sand, gray 





g. vin 



Silt 





h. vn 



Silt and sand, mixed 





K. VI 



Wood 



Solid layer. 



V 



Sand and gravel 



rv 



Wood, with sand 



With spruce cones. 



With shells, wood, and spruce 



cones. 



III 



Sand 



II 



Sand with some gravel 



I 



Boulder clay 







Total thickness 





