Fig. 14From: Banded amphibolites in the Alps: a new interpretation in relation to early Paleozoic peraluminous magmatismP-T diagram illustrating production of banded amphibolite formations in two steps: Step 1: Magma interaction processes in the “zone of intermingling” (c. 5–10 km thick) at the base of the accretionary complex. Step 2: Steep thrusts cut the accretionary complex and intersect the “zone of intermingling”. The tectono-metamorphic and magmatic processes correspond to the illustrations in Fig. 13Back to article page