Petrified lightning: the role of bubbles in the physical and chemical processes leading to formation of rock fulgurites

Jiangzhi Chen1, Chiara Elmi1, David L Goldsby2 and Reto Giere3, (1)University of Pennsylvania, Philadelphia, PA, United States, (2)University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States, (3)University of Pennsylvania, Department of Earth and Environmental Science, Philadelphia, United States