The origin and evolution of the parental magmas of frontal volcanoes in Kamchatka: Evidence from magmatic inclusions in olivine from Zhupanovsky volcano

Research on Zhupanovsky volcano in Kamchatka reveals that its parental magmas originated from the melting of mantle peridotite under high pressure and temperature, influenced by a hydrous component derived from subducted slab melting. The study analyzed melt inclusions in olivine crystals to reconstruct the latest stages of magma crystallization, showing that the primary melt was a low-silica picrobasalt distinct from mid-ocean ridge basalts (MORB). This process involved simultaneous crystallization of multiple minerals and the segregation of sulfur-rich fluids. The findings suggest that variations in subducted slab depth beneath Kamchatka volcanoes lead to changes in the hydrous component's composition, impacting magma chemistry.

Plechova, A. A., Portnyagin, M. V., & Bazanova, L. I. (2011). The origin and evolution of the parental magmas of frontal volcanoes in Kamchatka: Evidence from magmatic inclusions in olivine from Zhupanovsky volcano. Geochemistry International, 49(8), 743–767. https://doi.org/10.1134/s0016702911080064