The isotopic dichotomy between non-carbonaceous (NC) and carbonaceous (CC) meteorites indicates that meteorite parent bodies derive from two genetically distinct reservoirs, which presumably were located inside (NC) and outside (CC) the orbit of Jupiter and remained isolated from each other for the first few million years of the solar system. Here we review the discovery of the NC–CC dichotomy and its implications for understanding the early history of the solar system, including the formation of Jupiter, the dynamics of terrestrial planet formation, and the origin and nature of Earth’s building blocks. The isotopic difference between the NC and CC reservoirs is probably inherited from the solar system’s parental molecular cloud and has been maintained through the rapid formation of Jupiter that prevented significant exchange of material from inside (NC) and outside (CC) its orbit. The growth and/or migration of Jupiter resulted in inward scattering of CC bodies, which accounts for the co-occurrence of NC and CC bodies in the present-day asteroid belt and the delivery of presumably volatile-rich CC bodies to the growing terrestrial planets. Earth’s primitive mantle, at least for siderophile elements like Mo, has a mixed NC–CC composition, indicating that Earth accreted CC bodies during the final stages of its growth, perhaps through the Moon-forming giant impactor. The late-stage accretion of CC bodies to Earth is sufficient to account for the entire budget of Earth’s water and highly volatile species.

中文翻译：

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非碳质-碳质陨石二分法

非碳质 (NC) 和碳质 (CC) 陨石之间的同位素二分法表明，陨石母体来自两个遗传上不同的储层，它们可能位于木星轨道内部 (NC) 和外部 (CC)，并与每个储层保持隔离。其他在太阳系的最初几百万年。在这里，我们回顾了 NC-CC 二分法的发现及其对理解太阳系早期历史的影响，包括木星的形成、类地行星形成的动力学以及地球构建块的起源和性质。NC 和 CC 储层之间的同位素差异可能是从太阳系的母体分子云中继承而来的，并且通过木星的快速形成得以维持，木星阻止了其轨道内部 (NC) 和外部 (CC) 的大量物质交换。木星的生长和/或迁移导致 CC 天体向内散射，这解释了当今小行星带中 NC 和 CC 天体的同时出现，以及可能富含挥发性的 CC 天体向不断增长的类地行星输送的原因. 地球的原始地幔，至少对于像 Mo 这样的嗜铁元素而言，具有混合的 NC-CC 成分，表明地球在其生长的最后阶段吸积了 CC 天体，可能是通过形成月球的巨大撞击器。