Nebula Scale Mixing Between Non-Carbonaceous and Carbonaceous Chondrite Reservoirs: Testing the Grand Tack Model with Almahata Sitta Stones

Yin, Q-Z ; Sanborn, M E ; Goodrich, C A ; Zolensky, M ; Fioretti, A M ; Shaddad, M ; Kohl, I E ; Young, E D

关键词: ASTEROIDS;    CARBONACEOUS CHONDRITES;    DUST;    GAS DENSITY;    METEORITIC COMPOSITION;    PHASE CHANGE MATERIALS;    PROTOPLANETARY DISKS;    ROTATING DISKS;    UREILITES;    CARBONACEOUS MATERIALS;    GAS GIANT PLANETS;    JUPITER (PLANET);    METEORITIC DIAMONDS;    OXYGEN ISOTOPES;    SOLAR SYSTEM;    T TAURI STARS;   

RP-ID  :  JSC-E-DAA-TN51514

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来源: NASA Technical Reports Server

【 摘 要 】

There is an increasing number of Cr-O-Ti isotope studies that show that solar system materials are divided into two main populations, one carbonaceous chondrite (CC)-like and the other is non-carbonaceous (NCC)-like, with minimal mixing between them attributed to a gap opened in the propoplanetary disk due to Jupiter's formation. The Grand Tack model suggests that there should be a particular time in the disk history when this gap is breached and ensuring a subsequent large-scale mixing between S- and C-type asteroids (inner solar system and outer solar system materials), an idea supported by our recent work on chondrule (Delta)17O-(epsilon)54Cr isotope systematics.