Description of Sedimentary rocks

Description of Sedimentary rocks

1.    Components :(( Grains)) Qz %, Feldspars % (lamellar twinning), rock fragments %, other components.

                               ((Matrix)): (May be Qz or Feldspars or Clay) 

2.     Grain size : Gravel(more than 2mm) or Sand (1/16 to 2mm) or Silt (less than 1/16mm)

3.   Grain/Matrix ratio :

4.   Roundness : Very angular or sub angular or rounded

5.   Sorting : Poorly sorted or mod sorted or well sorted

6.    Grain shape : Spherical or tabular or rod shape or equant 

7.    Supporting : Grain supported or Matrix supported

8.    Cement chemical : Calcareous or Ferrigenous or Siliceous

9.    Maturity compositional: Mature (Qz more than 90%)  

                                                Immature ( Low Qz and   More  Matrix )       

Texture  : If  Matrix more than 15% so its Immature

                If Matrix less than 15% and low to mod sorting so it will be mature

If Matrix less than 15%and will sorted and will rounded it will be Super mature .

10. Name