magmatic mixing

Magmatic mixing in areas of active magmatism is the process wherby adjacent magma bodies can develop transient subsurface communications before their eruption or final subsurface emplacement.

Anatexis-related magmatic mixing involves the secondary melting of mid- to lower crustal rocks upon contact with much hotter, rising mafic melts of mantle origin, and produces felsic (feldspar- and quartz-rich) magmas in arc and continental rift settings. Such melts may reach high crustal levels carrying both mantle heat and mantle material.