MARYLAND GEOLOGICAL SURVEY 



101 



StratigrapJiic Relations. 

 The Wicomico formation is deposited as a terrace lying unconformably 

 and somewhat irregularly on the older beds of Eocene and Miocene age. 

 This terrace was laid down about the margin of the Sunderland forma- 

 tion and locally is believed to lap up on the thin eroded edges of the lat- 

 ter, which are supposed to run out a short distance beneath it. It is 

 everywhere separated from the Sunderland formation by a well-defined 

 scarp, which is an ancient cliff cut by the waves of the Wicomico sea 

 during the post-Sundcrland depression (Plate VII, Fig. 2). 



Local Sections. 

 The materials which compose the Wicomico 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 one mile north of Dares Wharf. 



o a 



Pleistocene. § ts . 



8 a ^ 



Feet. Inches. 



Reddish yellow cross-bedded sand and gravel 36 



Coarse gravel 2 6 



Miocene. 



a 



+J o 



I- s 



^ a"! 



O o 



b 



C B 



o o 



Greenish sandy clay 



Total 47 



Section on Patuxent River at Hollin Cliff. 



Pleistocene. S « , 



8 s 

 ^1 



Clayey loam . . 

 Sand and gravel 



Feet. 

 3 

 7 



Miocene. 



a 



*J o 

 ^ C3 .. 

 « ? 



Fossiliferous sandy clay 63 



Total 73 



THE TALBOT FORIMATION. 



The Talbot formation has been named from Talbot County, Maryland, 

 where it is extensively developed. In Calvert County it consists of a 



