What creates intermediate magma?

Intermediate magma is formed through a combination of processes, primarily the partial melting of the Earth's crust and the mixing of different magma types. This type of magma typically has a composition between that of basaltic and granitic magmas, often resulting from the melting of sedimentary rocks or the contamination of basaltic magma with crustal materials. Additionally, subduction zone dynamics can contribute to the generation of intermediate magma, where water from subducting plates lowers the melting temperature of the surrounding mantle materials.