308 THE WONDERS OF GEOLOGY. Lect. IV. 



A triple group of sands, 

 sandstones, limestone, and 

 clay. Bands and concre- 



Marine shells, many pe- 

 culiar. Ammonites, 

 Nautili, Scaphites of 



Greensand. { tions of chert. Ironstone, \ large size. Fishes; 



fuller's earth ; sulphate of Crustaceans. Iguano- 



barytes ; fibrous gypsum. don, Megalosaurus, 



Plesiosaurus, Turtles, 



\ y and other reptiles. 



These various strata can be studied with facility on 

 the southern coast of the Isle of Wight ;* at the northern 

 end of Swanage Bay ; and along some parts of the Dor- 

 setshire coast. At Southbourn, on the Sussex shores, the 

 firestone, gait, and greensand, emerge from beneath the 

 white chalk on the north of the Downs ; and on the coast 

 of Kent, the same group rises from under the chalk on 

 the south side of the North Downs. 



10. Folkstone cliffs. — The relative position of these 

 beds is well displayed at Copt Point, near Folkstone. The 

 Firestone appears as a terrace inland, coming out below the 



Folkstone Hill. 



Copt Point. tfC~ f^ 



' lib. i!i III 1 ;; 



Sea. 



l^iSi^t ; :^ » 



Lign. 55.— Section at Eastware Bay, near Folkstone. 

 1. The Upper Chalk. 2. Lower Chalk. 3. Firestone. 4. Gait. 5. Greensand. 



chalk marl ; the Gait constitutes the immediate face of the 

 cliff, and reposes on the Greensand, which forms the lower 



* See Geology of the Isle of Wight, for lists of fossils of the 

 cretaceous series of that district. 



