Reconstructing the lithium isotope composition (δLi) of ancient seawater and lacustrine environment is crucial for tracing silicate weathering processes that regulate Earth's carbon cycle and climate. This study examines the reliability of evaporite minerals in preserving the Li isotope signature of the original brines from which they precipitate. We conducted evaporation experiments on modern natural waters from Qinghai Lake, the Yellow Sea, and Chaka Salt Lake, each with unique salinity and chemical composition, to examine the behavior of lithium isotope ratios in the evolving brine and precipitated evaporite minerals.

中文翻译：

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评估蒸发岩作为湖泊和海水锂同位素比的潜在档案：使用各种天然盐水的实验研究


重建古代海水和湖泊环境的锂同位素组成（δLi）对于追踪调节地球碳循环和气候的硅酸盐风化过程至关重要。这项研究检验了蒸发岩矿物在保留其沉淀的原始盐水的锂同位素特征方面的可靠性。我们对青海湖、黄海和茶卡盐湖的现代天然水体进行了蒸发实验，这些水体都具有独特的盐度和化学成分，以研究演化卤水和沉淀蒸发矿物中锂同位素比率的行为。