Vesiculation in rhyolite at low H2O contents: A thermodynamic model

• Published in: Geochemistry, Geophysics, Geosystems
• Main Authors: Ryan, Amy G., Russell, James K., Hess, Kai-Uwe, Phillion, A.B., Dingwell, Donald B.
• Other Authors: Materials Science and Engineering
• Language: English
• Published: Wiley 2015
• Subjects: Krafla; Hrafntinnuhryggur; Iceland
• Online Access: http://hdl.handle.net/11375/21523; https://doi.org/10.1002/2015GC006024

We present experimental data on the thermodynamics and kinetics of bubble nucleation and growth in weakly H2O-oversaturated rhyolitic melts. The high-temperature (900-1100°C) experiments involve heating of rhyolitic obsidian from Hrafntinnuhryggur, Krafla, Iceland to above their glass transition tem...