SUMMARY OF SEDIMENTARY ROCKS 



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Slates. 

 Shales. . 

 Mud rocks 



and 

 Clay stones 

 (argillytes) 



S- Tuffs. 



Limestone 

 ( calcilyfes ] 



and 

 Dolomites. 



Autolutytes (argillaceous) 



Autosilicilutytes (argillaceous) 



Autoargillutytes (pure, siliceous, cal- 

 careous or carbonaceous) 



Atmolutytes (argillaceous) 



Atmoargillutytes (pure, siliceous, cal- 

 careous, or carbonaceous) 



Anemolutytes (argillaceous) 



Anemoargillutytes (pure, siliceous, 

 calcareous, or carbonaceous) 



Anemosilicilutytes (argillaceous) 



Hydrolutytes (argillaceous) 



Hydrargillutytes (pure, siliceous, cal- 

 careous, or carbonaceous) 



j Pyrarenytes 

 I Pyrolutytes 



Hydrogenic calc- rocks (Hydrocalci- 

 lytes) (chemical limestones) 



Biogenic calc-rocks (Biocalcilytes) 

 (coral rock, shell rock, oozes, 



etc. ) 

 Autocalcirudytes, 



calcilutytes 

 Atmocalcirudytes, 



calcilutytes 

 Anemocalcarenytes and calcilutytes 

 Hydrocalcirudytes, calcarenytes, and 



calcilutytes 



calcarenytes, and 

 calcarenytes, and 



The Cosmoclastic Rocks. 



This term has been proposed by Prof. H. L. Fairchild for the 

 original rocks of the earth, which, according to the Planetesimal 

 hypothesis of earth origin, were formed through accretion of frag- 

 ments derived from space. (Fairchild-8; Chamberlin and Salis- 

 bury-2, ii. Chapter I.) 



Special Rock Terms. 



Rock Terms Emphasising Composition. It is often necessary 

 or desirable to emphasize the composition of a rock rather than its 



