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176Lu-176Hf同位素衰变体系是研究硅酸盐固体行星分异演化的一个重要工具,也能为认识地球最早期地壳的起源提供有利手段。然而,对于Lu-Hf同位素体系数据的解释,需要首先建立完好的地球总体Hf同位素的生长曲线。Lu和Hf均是难熔(highly refractory)的中等-强不相容元素。陨石中的Lu-Hf同位素组成是研究地球全球或硅酸盐地球Lu-Hf同位素组成的重要参考。然而,现代地球的176Hf/177Hf值和球粒陨石中的176Hf/177Hf值(即CHUR化学储库)相比有很大的变化范围,也
The 176Lu-176Hf isotopic decay system is an important tool to study the evolutionary differentiation of silicate solid planets. It can also provide favorable means for understanding the origin of the earliest earth’s crust. However, for the interpretation of the Lu-Hf isotopic data, it is necessary to first establish a complete global Hf isotope growth curve. Both Lu and Hf are medium-intense incompatible elements that are highly refractory. The Lu-Hf isotope composition in meteorites is an important reference for the study of the Lu-Hf isotopic composition of Earth’s globe or silicate Earth. However, the 176Hf / 177Hf values for modern-day earth vary widely from the 176Hf / 177Hf values for chondrites (ie, the CHUR chemical reservoir) and