Signs of deep fluids explosions in eruption products of Bityuk-Tube independent center (Western Prielbrusye)
In the earliest eruption products (flyuidolites) of Bityuk-Tube independent center in Western Prielbrusye there are found four glasses varying in silica and K <sub>2</sub>O/Na <sub>2</sub>O relations as well as two monomineral glasses: plagioclase and quartz. This composition of initial melts is the result of endogenous impaktogenesis. It is shown that deep fluid explosions initiate substrate melting on one hand, and prepare and develop channels for later magma eruptions on the other hand.