Experimentation to Understand Planet and Proto-Planet Formation

Righter, K

关键词: PLANETARY EVOLUTION;    PLANETARY MANTLES;    PLANETARY CORES;    PROTOPLANETS;    METEORITIC COMPOSITION;    OXYGENATION;    IMPACT MELTS;    CRYSTALLIZATION;    SIDEROPHILE ELEMENTS;    SILICATES;    MINERALS;    CHONDRULE;    PETROLOGY;   

RP-ID  :  JSC-E-DAA-TN57760

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Experimental petrology has placed constraints on a wide variety of nebular and planet formation processes such as chondrule formation, CAI (Calcium-Aluminum-rich Inclusions) crystallization, asteroid magmatism, mantle melting, core formation, element partitioning related to radiogenic isotopes and heat production. Although great progress has been made, there remain several key problems where more data are required to constrain modelling, both empirical and thermodynamics-based. Here I will focus on several areas with implications for meteoritics and planetary science, including systems of low fO2 (Oxygen fugacity), constructing models that include both metal and silicate for mantle melting and differentiation, high pressure phase equilibria relevant to full range of silicate mantles, and core-mantle equilibria where H and O are specified, and their effects are measured.