MARYLAND GEOLOGICAL SURVEY 



87 



Miocene. 



a 



*J o 

 O o 



Eocene. 



III. Section at Chcuupcake Beach. 



Feet. Inches. 

 f Yellow sandy clay (Zone 1") ) 9 



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) .'^2 



Greenish brown sandy clay bearing fossil casts 



(Zone 12) 2 6 



Greenish brown sandy clay ( Zone 11) 5 



Grayish green sand containing some clay with the 

 following fossils : Tttrritclla indentata, Phacoidcs 

 anodonta, Crassatellitcs melinus, Astarte cuneifor- 

 vii», Ostrea scUwformis, Pcctcn madisoniufi, Macro- 

 callista tnarylandica, Atrina han-isii. Area sub- 

 rostrata, OlycymcHs parilis, etc. (Zone 10) 



Greenish sandy clay carrying scattered layers of 

 Corbula elevata (Zone 9) 



Greenish sandy clay apparently devoid of fossils 

 (Zone 8) 



Greenish sandy clay carrying scattered layers of 

 Corbula elevata (Zone 7) 



Greenish sandy clay carrying large numbers of 

 Corbula elevata (Zone 6) 



Greenish sandy clay carrying Thracia conradi (Zone 

 5) T 



Greenish sandy clay carrying Ostrea pcrcrassa (Zone , 

 4) 



Bluish-green sandy clay revealed in well-boring 

 (Zone 3, 2, and 1) 62 



Glauconitic sandy clay 



6 



6 



6 



8 



Total 97 



IV. Section 2.5 viiles south of Chesapeake Beach. 



a 



Pleistocene. ^ § - 



Miocene. 



Yellowish sandy loam . 



Feet. 



7 



s - 



K fa 



c Yellow sandy clay (Zone l.j) 19 



Fossiliferous yellowish sandy clay with an indurated 



portion at top (Zone 14) 5 



Brownish and bluish sandy clay containing imperfect 



fossil casts (Zone 13) 27 



Chocolate colored sandy clay carrying imperfect fos- 

 sil casts (Zone 12) 3 



Unfo.ssiliferous blue clayey sand (Zone 11) 9 



Fossiliferous brown sand and clay (Zone 10) 8 



^ rt Fossiliferous bluish clayey sand (Zone 9) 3 



rt £ i Brownish sand and clay containing poorly preserved 

 U "" 



a 



o 



fa 



casts of Ciirhula ( Zone 8) 15 



Brownish sandy clay containing scattered bands of 



Ci.rbula elevata ( Zone 7) 2 



Bluish clayey sand carrying large numbers of Corbu- 

 la elevata (Zone G) 2 



Bluish clayey sand carrying scattered bands of Cor- 

 bula elevata (Zone ">) 2 



Bluish clayey sand carrying O-strca pcrcrassa (Zone 4) 

 Fossiliferous bluish clayey sand ^Zone 3) 4 



Inches. 



Total 107 



