R3：高圧科学・地球深部

[R3-11] 高圧鉱物の逆相転移カイネティクス

*久保 友明¹、嘉村 航¹、今村 公裕¹、丹下 慶範²、肥後 祐司²、宮原 正明³ (1. 九州大・院理、2. JASRI、3. 広島大・院理)

キーワード：高圧鉱物、逆相転移、カイネティクス、衝撃変成隕石、ダイヤモンド包有物

High-pressure minerals stable at deep mantle pressures have been naturally found on Earth such as shocked meteorites and diamond inclusions, which provides important constraints on processes of planetary collisions and deep mantle dynamics. Because the timescales are limited in these dynamic processes, the reactions often remain incomplete and/or metastable state. Additionally, backward reactions to the low-pressure phases possibly occur. Here we present some experimental results on kinetics of the back-transformation.