Alkaline metasomatic rocks

Overview

Metasomatic rocks by alkaline hydrothermal fluid associated with basaltic magma activities. Protoliths are dacitic-basaltic volcanic rocks, plutonic rocks, and sedimentary rocks. Alkaline metasomatic rocks are observed near intra-oceanic arc volcanoes on volcanic fronts.

Alkaline metasomatic facies series

Stilbite-Mordenite zone > Heulandite-Analcime zone > Laumontite-Albite zone > Wairakite-Albite zone