Sensitivities of Earth's core and mantle compositions to accretion and differentiation processes
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- 作者：Rebecca A. Fischer<sup>asup><sup> ; sup><sup>bsup><sup> ; sup><sup>csup><sup> ; sup><sup>fischerr@si.edusup> ; Andrew J. Campbell<sup>asup> ; Fred J. Ciesla<sup>asup>
- 关键词：core formation ; core composition ; metal&ndash ; silicate partitioning ; accretion ; light elements ; trace elements
- 刊名：Earth and Planetary Science Letters
- 出版年：2017
- 出版时间：15 January 2017
- 年：2017
- 卷：458
- 期：Complete
- 页码：252-262
- 全文大小：913 K
- 卷排序：458
文摘
Combined accretion simulations and partitioning experiments to model core formation. Si and O most likely dominate light element budget of Earth's core. Earth formed from reduced materials at temperatures near or slightly above liquidus. Tradeoff between equilibration depth and amount of metal and silicate equilibrating. Core and mantle compositions most sensitive to these factors plus accretion history.