Crystals settling to the bottom due to gravity are removed from further reaction with the melt - results in silica poor minerals at bottom of chamber, silica rich minerals at top ii - continuous reaction of the melt and early formed minerals - early formed crystals keep in contact with the melt, continuing to react with the melt forming minerals of different composition (BRS) iii - crystallization of the melt in a new location - some of the melt can be squeezed into fracture surrounding the magma chamber from pockets of still molten magma within rock-like masses- the rocks formed are lacking in early formed minerals thus are different in composition Other 
(Crystals; settling; to the bottom due to gravity) (minerals; keep; in contact with the melt) (fracture; surrounding; the magma chamber; from pockets of still molten magma) (some of the melt; can be squeezed; ) (the rocks formed; are lacking; T:in early formed minerals) (the rocks; formed; ) (the melt; forming; minerals of different composition) (some of the melt; are; different in composition Other)
Crystals minerals fracture some of the melt the rocks formed the rocks the melt some of the melt
settling keep surrounding can be squeezed are lacking formed forming are
to the bottom due to gravity
in contact with the melt
the magma chamber from pockets of still molten magma
T:in early formed minerals
minerals of different composition
different in composition Other