Aciditate (coninut n SiO2)

ACIDE > 65% INTERMEDIARE 65-52% BAZICE 52-42%

Compoziia magmei FELSIC INTERMEDIAR MAFIC

>10% cuar 50% feldspat ortoclaz > plagioclaz

>50% feldspat plagioclaz 15-50% piroxeni (augit)

2mm) Granit Diorit Gabbrou Peridotit, Dunit Piroxenit Hornblendit

SUBVULCANIC Afanitic (