TABLE OF STRATIFIED ROCKS. 



SYSTEMS. 



FliSISTOCBNE 



(250 ft.) 



FORMATIONS. 



PlilOCENB 



(100 ft.) 

 MIOCENB 



(125 ft.) 

 EOCBNK 

 (2,600 ft.) 



CBIETACEGTJS 



(7,000 ft.) 



NEOCOMIAN 



JURASSIC 



(3,000 ft.) 



TKIASSIC 



(3,000 ft.) 



PERMIAN or DTAS 



(500 to 3,000 ft.) 



CARBONIFEROUS 



(12,000 ft.) 



DEVONIAN AND OliD 



RED SANDSTONE 



(5,000 to 10,000 ft.) 



SILURIAN 



(3,000 to 5,000 ft.) 



ORDOVICIAN 



(5,000 to 8,000 ft.) 



CAIIBRIAN 



(20,000 to 30,000 ft.) 



KOZOIC— ARCHJBAN 



(30,000 ft.) 



Terrestrial, Alluvial, Esttiarine, and 

 Marine Beds of Historic, Iron, 

 Bronze, and Neolithic Ages 



Peat, Alluvium, Loess 



Valley Gravels, Brick-earths 



Cave-deposits 



Raised Beaches 



PalsBolithic Age 



Boulder-clay and Gravels 



Norfolk Forest bed Series 

 Norwich and Red Crags 

 Coralline Crag (Diestian) 



CEningen Beds Fresh-water, etc. 



Fluvio-marine Series (Oligocene) 



LIFE-PERIODS. 



Maestricht Beds 



Chalk 



Upper Greensand 



Gault 



Lower Greensand 



Wealden 



Purbeck. Beds 



Portland Beds 



Kimeridge Clay (Solenhofen Beds) 



Corallian Beds 



Oxford Clay 



Great Oolite Series 



Inferior Oolite Series 



Lias 



Rhsetic Beds 

 Keuper 

 Muschelkalk 

 Bunter 



Zechstein 



Red Sandstone, Marl 

 Magnesian Limestone, etc. 

 Red Sandstone and Conglomerate 

 Rothliegende 



Coal-measures and Millstone Grit 

 Carboniferous Limestone Series 



Upper Old Red Sandstone 



Devonian 



Lower Old Red Sandstone 



Ludlow Series 



Wenlock Series 



Llandovery Series 



May Hill Series 



Bala and Caradoc Series 



Llandeilo Series 



Llanvirn Series 



Arenig and Skiddaw Series 



Tremadoc Slates 



Lingula Flags 



Menevian Series 



Harlech and Longmynd Series 



Pebidian, Arvonian, and Dimetian 

 Huronian and Lautentian 



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