TEM-EELS analyses of structure and chemistry of planetary materials in submicron scale

为了研究高温、高压和缺氧逸度对石质陨石矿物学的影响，对石质陨石进行了氧化实验和冲击恢复实验。对回收样品的TEM分析表明：1)富铁橄榄石在氧化过程中的中红外光谱与上层结构转变具有相关性；2)在~1 GPa的冲击加热中，含水矿物脱水不显著。斜长石的静态压缩实验和回收样品的TEM和拉曼分析表明，3)压力诱导的斜长石非晶化具有相当大的温度和时间依赖性。

Oxidation experiments and shock recovery experiments of stony meteorites have been demonstrated in order to investigate the effects of high-temperature, -pressure, and -oxygen fugacity on the mineralogy of the meteorites. TEM analyses of the recovered samples showed that 1) a correlation between mid-infrared spectra and a superstructure transition of Fe-rich olivine during oxidation, and 2) dehydration of hydrous minerals is not significant in shock heating at ~1 GPa. Static compression experiments of plagioclase and TEM and Raman analyses of the recovered samples, revealed that 3) the pressure-induced amorphization of plagioclase has considerable temperature and time dependence.