104 



THE GEOLOGY OF CALVERT COUNTY 



which is an ancient cliff cut by the waves of the Talbot sea during the 

 post-Wieomico subsidence, but this relation is not always shown (Plate 

 IX, Fig. 3). 



Local Sections. 



The materials which compose the Talbot formation vary rapidly from 

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

 the general character of the formation: 



Pleistocene. 



a 



-w O 



o s 



o 



fa 



Section on Patuxent River just south of Hall Creek. 



Feet. 



Loam 2 



Yellowish sandy clay 4 



Cross-bedded sand and fine gravel 10 



Eocene. 



Greensand marl 



Total 22 



Section on Patuxent River 1.5 miles south of Buena Vista. 



a 



■>^ .2 

 o 42 



Pleistocene. S cs 



as a 



Yellowish loam 



Reddish yellow clay 



Sandy clay 



Gravel 



Sand 



Sandy loam 



White sand 



Reddish sand 



White sand 



Greenish sandy clay bearing pebbles . 



Feet. Inches. 



2 



2 



2 



1 6 



2 



1 



6 

 1 

 1 



Total 15 



Section on Patuxent River .5 mile south of Hellen Out. 



Pleistocene. ■-; 



a 

 o 



d 



a 



o 



Brownish loam . . . 



Gravel 



Coarse sandy clay 

 Very coarse sand . 



Feet. Inches. 



3 



2 



4 



8 



Fine clay sand 10 



Greenish sandy clay bearing vegetable remains which 



occur at tide and full thickness not seen 1 



6 



Total 28 



