Section 0*25 miles below mouth St.Leonards Creel 
Ft. In 
Pleistocene :- 
Yellowish gravel and sand..18 • • 
Chop tank formation :^ 
Greenish sand partially indurated above, 
solidified to solid rock at base of 
section,carrying the following species:- 
Balanus concavus , Panopea americana . 
Corbula idonea.Cardium laqueatiara,Astarte 
thisphila . Pecten madisonius , Melina 
maxillata .etc.(Zone 17,in part)...... 18 .. 
Total. 37 Feet 
Section at Drum Cliff near Jones Wharf. 
Plei stocene :- 
Ft. In 
Heddish yellow loam,sand and gravel.......42. 
Choptank formation :- 
Greenish clay containing poorly preserved 
fossils carrying the following species: 
3alanus concavus . Panopea americana . 
Phacoides contractus . Cardium laqueatum , 
Pecten madisonius . Ostrea carolinensis . 
etc. (Zone 19, in part).....,,... 6 
i • * * V p.** -»■ 
Greenish. unf os si lif erous clay (Z one 18)... 8 
Brownish and greenish fossiliferous sand 
partially indurated above,solidified to 
solid rock at base,carrying the following 
species: 3alanus concavus ; Bcphora quadri - 
costata var.umbilicata.Turritella plebeia . 
Corbula idonea . Macrocallista marylandica , 
Dosina acetabulum , Cardium laqueatum , 
Crassatellites turgidulus .Astarte thisphila , 
Pecten madisonius,Melina maxillata . Area 
staminea . Scutella aberti .etc. (Zone 17,in 
part) .. .. 30 
• • 
Total.86 
t 
;■ I, 
