88 



THE GEOLOGY OF CALVERT COUNTY 



V. Section one mile north of Plum Point. 



^ 9 

 iS .2 

 Pleistocene, o ^ ' 



a ^1 



m fa 



Yellowish sandy loam. 



Feet. Inches. 



7 



Miocene. 



•s a 

 fa 



Yellowish sandy clay (Zone !.'"() 19 



Yellowish sand carrying Isocardia fraterna (Zone 14) 7 



Bluish and brownish sandy clay (Zone 13) 25 



Brownish sand (Zone 12) 4 



Bluish clay grading downward into brown sand 



(Zone 11) 10 



Yellowish brown sandy clay bearing the following fos- 

 sils : Siphonalia devexa, Ecphora tricostata, Turri- 

 tella pleheia, T. variabilis, T. variabilis var. cumber- 

 landia, Polynices heros, Corbula inequalis, Phacoides 

 anodonta, Grassatellites meltnus, Astarte cuneifor- 

 mis, Pecten tnadisonius, Venus rileyi, Chione lati- 

 lirata, Cytherea staminea, Melina mawillata, Atrina 

 harrisii. Area subrostrata, Glycymeris parilis, etc., 



(Zone 10) 9 



Bluish green clayey sand carrying Corbula elevata 



(Zone 9) 2 



Bluish green clayey sand carrying imperfect casts of 



Corbula elevata ( ?) (Zone 8) 10 



Bluish green clayey sand containing large numbers 



of Corbula elevata (Zone 6) 3 



Bluish green clayey sand containing fossil casts of 

 Corbula elevata (Zone 5) 3 



Total 100 



VI. Section at Plum Point. 



6 

 6 



Pleistocene. 



a 



=* a 



o 



fa 



Yellowish sandy loam and gravel . 



Feet. 

 . 14 



Miocene. 



Yellowish sandy clay bearing characteristic fossils (Zone 10)' *2 



Greenish sandy clay carrying scattered layers of Corbula ele- 

 vata (Zone 9) 2 



Greenish blue clayey sand carrying few imperfect fossils 



(Zone 8) 10 



Bluish clayey sand carrying Corbula elevata (Zone 6) 1 



Total 29 



