1)4 PHYSIOGRAPHY AXD GEOLOGY OF THE COASTAL PLAIN PROVINCE. 



II. Section two miles up Aqnia Creel'. 



Feet 

 Pleistocene Gravel and sand 7 



Eocene. Aqnia Piscataway Indurated greensand (Zone 3) 1 



Greensand with characteristic fossils (Zone 



2) 15 



Argillaceous sand more or less glauconitic 



without fossils ( Zone 1 ) 18 



Total 41 



III. Section of western portion of Uuff at Aquia Creek. 



Feet 

 Pleistocene Fine sand, light-yellow in color, with white 



clay near the base 26 



Eocene. Aquia Paspotansa Fine sand, of light-greenish color, containing 



a few glauconitic grains (Zone 10) 10 



Tliick-beddcd. arenaceous, and glauconitic 

 limestone interstratified with unconsoli- 

 dated layers of partially weathered green- 

 sand, the indurated layers largely filled 

 with the shells of Turritella mortoni 

 (Zone 9) 10 



Fine sand, of gray or green color, containing 

 several irregular bands of Turritella nior- 

 loni, also T. hiimeiosd, Cucullaea rjigantea, 

 Crassatcllites alaeformis and Ostrea com- 

 pressiruslra ( Zone 8 ) 30 



Dark-colored greensand chiefly filled with 

 broken shells of Meretri.v ovata var. pyga 



Crassatellites alaeformis (Zone 7) 7 



Piscataway Ditto, with same shells in whole condition 



(Zone 6) 1 



Indurated layer of light-colored greensand 

 filled with Turritella mortoni, T. humerosa, 

 Crassatellites alaeformis, Dosiniopsis lenti- 

 eiilaris Meretrix ovata var. pyga, Panopea 

 elongata, Pholadomya marylandica (Zone 

 5) 2 



Greensand marl containing same forms 

 (Zone 4) 8 



Indurated layer of dark-eolored greensand 

 with Crassatellites alaeformis, Meretrix 

 ovata var. pyga, Dosiniopsis lenticularis, 

 and Ostrea compressirostra (Zone 3).... 2 



Greensand marl with Dosiniopsis lenticularis, 

 Meretrix ovata var. pyga and Crassatellites 

 alaeformis ( Zone 2 ) 16 



Total 112 



