矿物在静、动态高压下相变P-T历史的比较研究

The study and comprehensive analysis of static high-pressure quenching experiments and laboratory dynamic high-pressure experiments on chondrites, as well as the study of shock-induced phase transition of minerals in the Suizhou meteorite revealed that the P-T conditions for phase transition of minerals during natural impact events ,such as collision of cosmic bodies or impact of meteorites on the Earth's surface, are not consistent with those obtained by shock experiments on chondrites or rocks in laboratory, but can be compared with the results of static high-pressure experiments. The duration of high-pressure regime for natural impact events is long enough for phase transition of minerals, while that for shock experiments in laboratory is too short to form high-pressure mineral phases. Hence, it is reasonable to estimate the P-T history of natural impact events on the basis of phase diagrams obtained by static high-pressure quenching experiments on meteorites or rocks.