DEPOSITS OF THE LAKE CHICAGO BASIN 



43 



STATIONS 34 AND 35 



530 and 495 feet south of Devon Avenue. Surface 595 feci A.T.; 15 feet A.L.M. 



Strata 



Deposit 



Depth 



Remarks 





34 



35 





VII 



Sandv soil (loam) 



21 



28 

 78 



8 



14 



3 



28 



180 



20 

 39 

 67 



8 



14 



3 



28 



179 





VII 



Sand, yellow 



With pebbles and a few boulders. 



V 



IV 



Peat, interstratified with sand 

 Silt 



Peat layers Y%X.oYi inches thick; 

 pieces of wood. 



III 



Sand 



With wood. 



n 



Shingle 



Varies from 2-3 inches in thick- 



i 



Boulder clay 



ness. 





Total thickness.... 





stations 36 and 37 (Plate XVIII) 

 505 and 490 feet south of Devon Avenue. Surface 595 feel A. T.\ 15 feet A.L.M. 



Strata 



Deposit 



Depth 



Remarks 





36 



37 





XD7 



Sandy soil (loam) 



20 



32 



32 



8 



v/% 

 m 



7 



29 



6 



4 

 34 



20A 

 32B 

 32C 



6^D 



2E 



IF 



1 



3 



2HG 



IH 

 29J^K 



2 



8L 

 40 





Xffl 



Silt 



With plant remains. 



xn 



Peat 



XI 



sat 





X 



Gray sand 



With wood. 



IX 



Silt 





VIII 



Gray sand 



With wood. 



VII 



Silt 





VI 



Grav sand 





V 



sat 



With shells. 



rv 



HI 



Silt, interstratuied with sand 

 Silt and fine sand 



With wood. 



With bivalve shells. 



ii 



Gravel and coarse sand 





i 



Boulder clay 







Total thickness 







180% 



180H 





