The chemical and isotope compositions of slab dehydration fluids from convergent margins have been theorized by many authors who have adopted several approaches. A direct collection of natural water is possible only in an oceanic environment, despite several difficulties in estimating the deepest component due to the mixing with seawater or hydrothermal fluids from the ridge. Accordingly, the study of melt inclusions is a valuable alternative. However, the latter mainly represents high temperature/pressure conditions in deep magmatic or metamorphic settings. Here, we present new H, O, Li and B isotope along with a revision of previously published chemical data from a potential natural example of slab dehydration water, sampled in a forearc region and affected by low-temperature metamorphism and serpentinization processes (Aqua de Ney, Northern California). Its extreme composition challenges the understanding of its origin and deep temperature, but this work is a further step on a topic of increasing interest for several scientists from different academic disciplines.

中文翻译：

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具有极端成分的天然泉水的氧，氢，硼和锂同位素数据：来自脱水板的流体？

来自收敛边界的平板脱水液的化学和同位素组成已被许多采用多种方法的作者进行了理论化。尽管由于与海脊中的海水或热流体混合而在估算最深成分时遇到了一些困难，但仅在海洋环境中才可能直接收集天然水。因此，对熔融夹杂物的研究是有价值的选择。但是，后者主要代表深部岩浆或变质环境中的高温/高压条件。在这里，我们介绍了新的H，O，Li和B同位素，以及对先前发表的化学数据的修订，这些化学数据来自平板脱水水的潜在自然示例，该样品在前臂区域采样并受到低温变质和蛇纹石化过程的影响（Aqua de没错 北加利福尼亚）。它的极端组成挑战了对其起源和深温的理解，但是这项工作是对来自不同学科的几位科学家越来越感兴趣的话题的又一步。