MARYLAXD GEOLOGICAL SURVEY 



Ixxxvii 



III. Section at Chesapeake Beach. 



Miocene. -^ S 



o 



Eocene. 



f Yellow sandy clay (Zone 15) 



Yellow sandy clay (Zone 14) 5 



Blue sandy clay changing to yellowish brown 

 sandy clay in the upper 12 feet, fossiliferous 

 throughout upper portion (Zone 13) 32 



Greenish brown sandy clay bearing fossil casts 

 (Zone 12) ' 2 



Greenish brown sandy clay ( Zone 11) 5 



Grayish green sand containing some clay con- 

 taining following fossils: Turritella inclen- 

 tata, Phacoides anodonta, Crassatellites meli- 

 nus, Astarte ctineiforviis, Ostrea seJlo'formis, 

 Pecten madisonius, Macrocallista marylandica. 

 Atrina harrisii. Area subrostrata, Glycimeris 

 5 J, parilis. etc. (Zone 10) 6 



Greenish sandy clay carrying scattered layers 

 of Corhula elevata (Zone 9) 6 



Greenish sandy clay apparently devoid of fos- 

 sils ( Zone 8 ) 9 



Greenish sandy clay carrying scattered layers 

 of Corbnla elevata (Zone 7) 6 



Greenish sandy clay carrying large numbers of 

 Corhula elevata (Zone 6) 8 



Greenish sandy clay carrying Thracia conradi 

 (Zone 5) 7 



Greenish sandy clay carrying Ostrea percrassa 

 (Zone 4) 



Bluish-green sandy clay revealed in well-boring 

 1^ ( Zone 3, 2 and 1 ) 62 



Glauconitic sandy clay 



Total 97 



Feet. Inches. 

 9 



IV. 



Pleistocene. 



Miocene ^ ce 



Section 2.5 miles south of Chesapeake Beach. 



Feet. Inches. 



Yellowish sandy loam 7 



Yellow sandy clay (Zone 15) 19 



Fossiliferous yellowish sandy clay with an in- 

 durated portion at top (Zone 14) 5 



Brownish and bluish sandy clay containing im- 

 perfect fossil casts (Zone 13) 27 



Chocolate colored sandy clay carrying imper- 

 fect fossil casts (Zone 12) 3 



Unfossiliferous blue clayey sand (Zone 11).... 9 

 Fossiliferous brown sand and clay (Zone 10) . . 8 



Fossiliferous bluish clayey sand (Zone 9) 3 



Brownish sand and clay containing poorly pre- 

 served casts of Corbnla (Zone 8) 15 



Brownish sandy clay containing scattered bands 



of Corbnla elevata (Zone 7) 2 6 



Bluish clayey sand carrying large numbers of 



Corhula elevata (Zone 6) 2 



Bluish clayey sand carrying scattered bands of 



Corhula elevata (Zone 5) 2 6 



Bluish clayey sand carrying Ostrea percrassa 



(Zone 4) 6 



Fossiliferous bluish clayey sand (Zone 3) 4 



Total 107 6 



