Experimental study of the physics and chemistry of impact-induced devolatilization

Abstract

Devolatilization from rock caused by hypervelocity impacts is believed to have played important roles on early atmosphere formation and the evolution of surface environments of terrestrial planets. In order to apply the results of laboratory experiments to planetary scale impacts, we need to understand detailed physical and chemical process and to establish the scaling law of impact-induced devolatilization. In this talk, we show the result of shock recovery experiment using calcite. The result suggests that the devolatilization from calcite occurs during the release of pressure.