TABLE OF SECONDARY STRATA. 
South of England Section. 
Upper Chalk. 
Lower Chalk. 
Chalk Marl. 
Chloritic Marl. 
Upper Greensand. 
Gault. 
Lower Greensand, 
Wealden Series. 
Purbeek Series. 
Portland Series. 
Kimeridge Clay. 
Coral Rag Series. 
Oxford Clay. 
Kelloway Rock. 
Cornbrash. 
Forest Marble. 
Bradford Clay. 
Great Oolite. 
Stonesfield Slate. 
Fuller’s Earth. 
Inferior Oolite. 
Supra-Lias Sands. 
Upper Lias Clay. 
Marlstone. 
Lower Lias. 
Penarth Beds. 
Keuper. 
Dolomitic Conglomerate. 
Bunter. 
East of England Section. 
Upper Chalk. 
Lower Chalk. 
Hunstanton Red Limestone. 
Cambridge Upper Greensand. 
Gault. 
Potton Sands and Wicken Beds. 
Kimeridge Clay. 
Up ware Limestone. 
Clay equivalent of Coral Rag. 
Elsworth Rock. 
Oxford Clay. 
Cornbrash and Forest Marble. 
Bradford Clay. 
Great Oolite. 
Collyweston Slate. 
Northampton Sands Series. 
Lias. 
