*
0.0625 2 ѡ . .


terrigenous sands ȡ ϡ ɡ eolianites . .
carbonate sands skeletal grains oolites coated grains intraclasts terrigenous carbonate. .
pyrocastic sands ɡ ash, lapilli, bombs. .
ǡ
:
Selley, 1976 (Maturity) . (Maturity) . . () () . (Index of chemical maturity) . (Reworked) (Pure quartz sands).
(Texture changes) . ( ) (sorting) (matrix) .
(Index of physical maturity) (Grains) (Matrix). (clay) .
(Texture Maturity) (Mineral Maturity)


() . . . .


( ) ( ) ( ). . .

. morphoscopie) : ( ) ( ). . (

. ǡ ɡ .



( ) "terrigenous" ( ) ( ).. . ( ).

"" .
.

( Pilat ) (ergs ) .

Bioclastic ( )..

. ( ). . . .

( ). ( ) ( ).

( ) ( ) ilmenite ( . .