THE NON-LIVING WORLD 



167 



FIG. 24. 



PLEISTOCENE 

 (250 ft.) 



PLIOCENE 



(100 ft.) 

 MIOCENE 



(125 ft.) 



EOCENE 



(2,000 ft.). 



Bronze, and NcolitUic Ages 

 Peat, Alluvium, Loess 

 Valley Gravels, Brickearths 

 Cave-deposits 

 : ;vaches 



1'alarolitliVc Age 

 Boulder Clay and Gravels 



Norfolk Forest-bed Series 

 Norwich and Ked Crags 

 Coralline Crag (l)icstian) 



(Eningcn Beds Freshwater, <tc. 

 Fluvio-marino Series (Oligoccne) 



aMB-.}*- * 



CRETACEOUS 

 (7,000 ft.) 



NEOCOMIAN 



Maestricht Beds 



Chalk 



Upper Greensand 



Gaulc 



Lower Greensand 



\VeaIdcn 



JURASSIC 



(3,000 ft.) 



TEIASSIO 



(3,000ft.) 



Purbeck Beds 

 Portland Beds 

 Kiinnicridge Clay (Solenhof 

 Corallian Beds 

 Oxford Clay 

 Great Oolite Series 

 nferior Oolite Series 



PEHMIAN or I 

 DYAS < 



(500 to 3,000 ft.) ( 



CARBONIFEROUS \ 



(12,000 ft.) 



DEVONIAN & OLD ( 

 BED SANDSTONE K 



fa.noo to 10.000 ft.) 



Upper Old Ked Sandstone 

 Lower Old Red Sandstone 



SILURIAN 



(3,000 to 5,000 ft.) 



ORDOVICIAN 



(5,000 to 8,000 ft.) 



CAMBRIAN 



(20,000 to 30,000 ft.) 



Ludlow Series 

 \Veiilock Scries 

 Llandovcry Series 

 May Hill Series 

 Bala and Caradoc Scries 

 Llandeilo Series 

 Llanvirn Scries 

 Arenijr and Skiddaw Series 

 Tremadoc Slates 

 LinRula Klacs 

 Mdini.sn Series 

 Harlecli and Longmynd K> 



EOZOIC- 

 RCH^EAN 

 (30,000 ft.) 



Pebidian, Arvonian, and Ditnct 

 Laurcntiaa 



(After Dr. Woodward, F.R.S.) 



