Abstract Mantle evolution is governed by continuous depletion by partial melting and replenishment by recycling oceanic and continental crust. Several important unknowns remain, however, such as the extent of compositional variability of the residual depleted mantle, the timescale, mass flux and composition of recycled oceanic and continental crust. Here, we investigate the Ce-Nd-Hf isotope systematics in a globally representative spectrum of mid ocean ridge and ocean island basalts. Using a Monte Carlo approach for reproducing the observed Ce-Nd-Hf isotope variation shows that the type and age of depleted mantle and recycled crust have the dominant influence on the slope, scatter, and extent of the modeled Ce-Nd-Hf isotope array. The model results suggest a relatively young (

中文翻译：

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Ce-Nd-Hf同位素系统学对地幔演化的限制

摘要 地幔演化受部分熔化的持续消耗和海洋和大陆地壳再循环的补充控制。然而，一些重要的未知数仍然存在，例如残余耗尽地幔的成分变异程度、时间尺度、质量通量和再循环海洋和大陆地壳的成分。在这里，我们研究了具有全球代表性的中洋脊和海岛玄武岩光谱中的 Ce-Nd-Hf 同位素系统。使用蒙特卡罗方法再现观测到的 Ce-Nd-Hf 同位素变化表明，耗尽地幔和再循环地壳的类型和年龄对模拟的 Ce-Nd-Hf 同位素阵列的斜率、散射和范围有主要影响. 模型结果表明一个相对年轻的 (