98 



THE GEOLOGY OF CALVERT COUKTY 



Jm-assic (?), Cretaceous, Eocene, and Miocene deposits and extending 

 from the base of the Lafayette-Sunderland escarpment to the base of the 

 Sunderland-Wicomico escarpment. The few deposits of Lafayette ma- 

 terials which may possibly underlie the Sunderland are disregarded be- 

 cause unrecognizable. Similarly the Wicomico is described as including 

 all the gravels, sands, and clays overlying the pre-Lafayette deposits 

 and extending from the base of the Sunderland-Wicomico escarpment to 

 the base of the Wicomico-Talbot escarpment. Perhaps, however, ma- 

 terials of later age may occasionally rest upon remnants of the Lafayette 

 and Sunderland formations, and the same is true of the Talbot formation. 



Local Sections. 



The materials which compose the Sunderland formation vary rapidly 

 from place to place. The following sections, however, will give an idea 

 of the character of the formation : 



Section on Bay Shore two miles south of Cove Point. 



Pleistocene. 



§1 

 52 '-' 



Feet. Inches. 



' Sandy loam 3 



Sand and gravel 20 



Iron layer 



Fine white and red sand 



Drab clayey sand 



Reddish sand 



Drab clayey sand 



Fine white and red sand 



Drab clay 



Fine sand 



Drab clay 



Red sand 



Iron layer 



3 

 6 



6 

 8 

 6 



G 

 2 



Miocene. 



to a 



s a 



-w 3 



02 fa 



Fossiliferoiis sandy clay 54 



Total 96 



Pleistocene. 



§ .2 



-o a 



a u 



s o 



OJ fa 



o 



Section on Bay Shore near Flag Pond. 



Reddish sandy clay and cross-bedded sand and gravel. 



Feet. 

 . 40 



