Mount St. Helens was an intermediate eruption. Far more explosive—but uncommon—are felsic lavas, which are 70 p.c silica and possess the very best fuel information and best viscosity, generally exploding and producing bits of rock known as tephra. This can be in the event the energies are balanced and returned https://lava86420.newsbloger.com/18298810/not-known-facts-about-lava