Modeling water exsolution from a growing and solidifying felsic magma body

We modeled water exsolution from a growing and crystalizing felsic magma body using conductive thermal model with simplified physical mechanisms of volatile transport. Magma solidification leads to the release initially dissolved in melt. Solidification behaviour depends, turn, on content. The is channeled where solidified enough form crystal network rapidly ascends until it encounters solid rock or liquid-rich magma. rate depends basal emplacement rate, cooling initial Water-rich layers are eventually trapped as crystallization proceeds. ran our quasi-eutectic granite composition non-eutectic monzogranite composition. crystallizes wider range temperature than eutectic magma, produces more mush, prone formation water-rich lenses. Exsolved accumulates sides chamber for both tested compositions also above top actual presence these nature their lifetime depend whether further released by fracturing. Our results account observed decoupling volatiles episodic volcano deformation. It has implications interpretation chambers tomography lenses would be difficult distinguish melt-rich