Chemical tipping point of magma determines explosive potential of volcanoes

https://www.nasa.gov/news/releases/latest/index.html

Volcanic eruptions are the most spectacular expression of the processes acting in the interior of any active planet. Effusive eruptions consist of a gentle and steady flow of lava on the surface, while explosive eruptions are violent phenomena that can eject hot materials up to several kilometres into the atmosphere.
Source: Psys.org
Chemical tipping point of magma determines explosive potential of volcanoes
Psys.org