28 introduction. 



Table of Geological Formations. 



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AZOIC? L 



Recent 



Pleistocene 



Pliocene 



Oligocene 



Eocene 



Cretaceous 



Jurassic 



New Red Sandstone 

 ok Poikilitic 



Carboniferous 



Old Red Sandstone ( 

 and Devonian i 



Silurian 



Cambrian 



Arch^an 



Terrestrial, Alluvial, Estuarine, 

 and Marine Beds, of Historic, 

 Iron, Bronze, and Neolithic 

 Ages. 



Terrestrial, Alluvial, Estuarine, 

 Marine, and Glacial Beds, of 

 Palaeolithic Age. 



Cromer Forest Bed Series. 



Norwich Crag Series. 



Red Crag. 



Coralline Crag. 



Hempstead Beds. 



Bembridge Beds. 



Osborne Beds. 



Headon Beds. 



Bagshot Beds. 



London Clay. 



Oldhaven and Blackheath Beds. 



Woolwich and Reading Beds. 



Thanet Beds. 



Chalk. 



Upper Greensand. 



Gault. 



Lower Greensand. 



Wealden ( ^^^^^"^ ^^^y* 



\ Hastings Beds. 



Purbeck Beds. 



Portland Beds. 



Kimeridge Clay. 



Corallian Beds. 



Oxford Clay and Kellaways Rock. 



Great Oolite Series. 



Inferior Oolite Series. 



Lias. 



TRhfetic Beds. 

 Trias •< Keuper. 



(Bunter. 

 Permian or Dyas. 



Coal Measures. 



Millstone Grit. 



Carboniferous Limestone Series. 



Upper Old Red Sandstone. 



Devonian. 



Lower Old Red Sandstone. 



Ludlow Series. 



Wenlock Series. 



May Hill Series. % 



Bala Series. 



Llanvirn Series. 



Arenig and Skiddaw Series. 



Tremadoc Slate Series. 



Lingula Flag Series. 



Menevian Series. 



Harlech and Longmynd Series. 



