非传统稳定同位素之铁同位素的地球化学研究进展

Progress in Geochemistry of Non-Traditional Stable Isotope—Iron Isotope

摘要: 经历了几十年的变化，同位素地球化学已然成为了地球化学的重要组成部分，并在解决跨越地球科学整个领域的各种地球科学问题当中起到了很大的作用。铁是地球上丰度最高的变价金属元素，也是不可或缺的成矿元素，稳定铁同位素地球化学的研究是一个比较前沿的方向，铁作为非传统稳定同位素，从稳定同位素的方向研究出了一系列铁地球化学方法。目前，铁同位素地球化学已广泛应用于行星探测、矿物示踪、深氧循环、表生过程和大洋中脊玄武岩演化等方面。目前，如何将铁同位素与其他同位素结合起来，应用于行星地质学、矿物示踪等领域还有待进一步研究。本文将主要从铁同位素测定方法的变迁、铁同位素分馏的不同过程以及铁同位素的研究及应用做出详细的论述。

Abstract: After decades of changes, isotope geochemistry has become an important part of geochemistry, and has played an important role in solving various geoscience problems across the whole field of geoscience. Iron is the most abundant variable valence metal element on the earth, and also an indispensable metallogenic element. The study of stable iron isotope geochemistry is a relatively advanced direction. With iron as a non-traditional stable isotope, a series of iron geochemical methods have been developed from the direction of stable isotope. At present, iron isotope geochemistry has been applied in planetary exploration, mineral tracing, deep oxygen cycle, supergene process and the evolution of mid ocean ridge basalt. At present, how to combine iron isotope with other isotopes and apply it to planetary geology, mineral tracing and other fields remains to be further studied. In this paper, the change of iron isotope determination method, the different process of iron isotope fractionation and the research and application of iron isotope are discussed in detail.