For a general representation about the movement of pyroclastic flows in chutes at the foot of lava domes on andesitic volcanoes we constructed of a pioneering facility for simulation of pyroclastic flows. In our series of experiments we used pseudo-fluid as a model for that sort of flow. The results of this study show that the motion of pseudo-fluid has a wave-like (undeveloped turbulent) nature. Likely it is a turbulent movement of pyroclastic flows that determines the structural features of chutes at the foot of the volcano lava domes – their wave-like walls and cascade-like bottom.

Numerous summit and parasitic eruptions of moderate potassium magnesian and high-alumina basalts and basaltic andesites, their mineralogic and geochemical features, and the composition of in situ chilled melt inclusions in the olivine of cinder lapilli discharged by Klyuchevskoi Volcano all provide evidence of the presence of magma chambers beneath the volcano. This is also supported by a dualism in the variation of CaO and A1203 concentrations in olivine and clinopyroxene during crystallization. The mineralogic features in the high-alumina basalts that were discharged by all parasitic eruptions of Klyuchevskoi provide evidence of magnesian magma being emplaced from a deeper chamber into a shallow high-alumina chamber. The distribution of incoherent elements in the volcano's magnesian and aluminiferous rocks shows that they came from a single mantle source. The geochemical and mineralogic data are in good agreement with the results of geophysical surveys that concern the structure and properties of the lithosphere beneath Klyuchevskoi.

На основании систематизации и анализа вулканологических, петрологических и экспериментальных данных установлено, что разнообразие извержений, наблюдаемых на Камчатке, обусловлено двумя принципиально разными эруптивными моделями: газогидродинамической – для жидких базальт-андезибазальтовых магм и вязкоупругодинамической – для малоподвижных андезитовых-дацитовых магм.