Session 3: Volatiles in melts and plumes

As magma rises from depth, decreasing pressure allows volatile species to partition to the gas phase. Bubbles form, grow, coalesce and gases start to flow through vesiculated magma. Eventually, gases reach the surface and are released into the atmosphere, in some cases diffused through a soil or bubbling through a water pool, in other cases forming large plumes or explosive eruption columns. All contributions regarding volatiles being still dissolved in the magma until their mixing with the atmosphere are welcome to this session