because the minerals formed in this process generally have compositions distinct from the magma itself, their removal can cause a progressive shift in the composition of the remaining magma - usually toward more silica-rich variants.
(the minerals; formed; L:in this process) (the minerals formed in this process; generally have; compositions distinct from the magma) (their removal; can cause; a progressive shift in the composition of the remaining magma - usually toward more silica-rich variants)
the minerals the minerals formed in this process their removal
formed generally have can cause
L:in this process
compositions distinct from the magma
a progressive shift in the composition of the remaining magma - usually toward more silica-rich variants