The red gelatin that moved to the top of the glass tank was mixed with gas which caused it to foam. On the surface it immediately started to separate and red liquid appeared where the original channels had formed. For images of trial 2 click here. The experiment seems to show that the geologists theory is correct, and it proves my hypothesis. Molten rock like the red liquid gelatin can move through denser material and overcome the force of gravity.
Eruptions take place because molten rock is forced through solid rock by gases and lower density.
An unexpected result was the formation of multiple channels and sideways rift vents.