DEPOSITS OF THE LAKE CHICAGO BASIN 



23 



A. LAWRENCE AVENUE TO LINCOLN AVENUE 



station I (Plates I, V) 



200 feet south of Foster A venue. Surface 587 feet A.T.;7 feet A . L. M. 



Strata 



Deposit 



Depth 



Remarks 



XI 





Surface soil, silt and loam 



19H 



12 





X 



Silt, somewhat peaty 





rx 





Sand and pebbles 



2 





VHI 





Silt, peaty in spots 



9 



With pockets of shells. 



vn 





Sand 



1 

 14 



With shells. 



VI 



Silt 



With pockets of shells. 



V 



Sand 



With Anodonta and gastropod 







shells. 



rv 





Silt 



4 

 19 



2 + 

 + 





hi 



Gravel and sand 



With Unios. 



ii 



Silt 





i 



Boulder clay? 



Water level in canal. 







Total thickness 



84+ 







BIOLOGICAL REMAINS 





Stratum III 





Fusconaja undata 



Pleurobema coccineum magnalacustris 





Crenodonta undulata 



EUiptio crassidens 





Quadrida pushdosa 



" gibbosiis 





" lachrymosa 



Amygdalonajas clegans 





Rotundaria tuberculata 



Eurynia ellipsiformis 

 Lampsilis ventricosa 





Stratum V 





Anodonta species 



Campcloma integrum 





Lampsilis luteola 



Goniobasis livescens 





Sphaerium striatinum 



Somatogyrus subglobosus 





" solididum 







Stratum VI 





Anodo-nta species 



Campeloma integrum 





Pisidium compressum 



Vahata tricarinata 





" noveboracense 



A mnicola limosa 





" politum decorum 



" emarginata 





" splendidulum 



Somatogyrus subglobosus 





" lirginicum 



Goniobasis livescens 





" walkeri 



Physa warreniana 





Sphaerium sulcatum 



Planorbis antrosus 





solididum 



" campamdatus 





" stamineum 



" trivohis 





" flavum 



Galba reflexa 







striatinum 



Lymn&a s 



tagnalis appressa 



