Experimental and thermal constraints on the deep-seated parentage of some granitoid magmas in subduction zones

Abstract

Regional metamorphism, migmatites and granites certainly owe their origin to influx of heat from the mantle. There is evidence that heat may be accompanied by material. This review is concerned with the deep source rocks, the fluid products, and the processes which contribute to the addition of material from the mantle into the crust, specifically at convergent plate boundaries where regional metamorphism and magmatic processes reach their most spectacular development in the formation of batholiths, calderas, andesites and rhyolite ash eruptions.

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