# 
3. Section at Chesapeake Beach 
Calvert formation : 
Yellow sandy clay (Zone 15)........ 
Yellow sandy clay (Zone 14). 5 ... 
Blue sandy clay changing to yellowish 
Brown sandy clay in upper 12 feet, 
fossiliferous throughout upper 
portion (Zone 13).....32 ... 
Greenish Brown sandy clay Bearing 
fossil casts (Zone 12).. 2 ... 6 
Greenish Brown sandy clay (Zone 11).... 5 ... 
Grayish green sand containing some clay 
containing following fossils iTurritella 
indentata . Phacoides anodontia » Crassa - 
tellites melinus . Astarte cuneiformis . 
Ostrea sellaeformis . Pecten madisonius , 
Macrocallista marylandica . Atrina harrisii . 
Area subrostata .Glycimeri s pari li 3 ,etc. 
(Zone 10).... 6 .. 
Greenish sandy clay carrying scattered 
layers of CorBula elevata (Zone 9)... 6 ... 
Greenish sandy clay apparently devoid 
of fossils (Zone 8).. ••••••••••• 9 ... 
Greenish sandy clay carrying scattered 
layers of CorBula elevata (Zone 7)... 6 ... 
Greenish sandy clay carrying large 
numbers of CorBula elevata (Zone 6).. 8 ... 
Greenish sandy clay carrying Thracia 
conradi (Zone 5).. 7 ... 
Greenish sandy clay carrying Ostrea 
•percrassa (Zone 4).... 0 ... 
Bluish-green sandy clay revealed in well- 
Boring (Zone3,2,and 1).. 62 •• 
Bocene :- 
Glauconitic sandy clay.. 
Total...97 Feet 
