Cratering on the Galilean Satellites: Implications for the Size Distribution of Cratering Impacts in the Solar
نویسندگان
چکیده
implications for the crystallization method of the metallic cores. In order to match observed P values in iron meteorites, the core must crystallize in the presence of the P-rich liquid. The composition of the S-rich liquid, dictated by the liquid immiscibility field, hasP contents much too low to reproduce P trends of iron meteorites. This suggests that inward core crystallization from the core/mantle boundary is not possible, since such a crystallization process would crystallize from the less-dense S-rich liquid that rises. This suggests outward core crystallization is necessary to reproduce observed P trends in iron meteorites. Acknowledgments: Supported by NASA grants NAG5-4084 and NGT-51644. References: [I] Scott E. R. D. (1972) GCA, 36, 1205-1236. [2) Chabot N. L. and Drake M. 1. (I 996)Meteoritics & Planet. Sci., 31, A26-A27. [3) Schiirmann E. and Neubert V. (1980) Giesserei-Forschung, 32, 1-5. [4) Ulff-M0IIer F. (1996)Meteoritics & Planet. Sci., 31, Al44.
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