Collaborative Research: Partitioning of Water Between Mantle Minerals and Silicate Melts

根据该奖项，研究员将对常见的上地幔矿物（橄榄石、辉石、石榴石）和含水硅酸盐熔体之间的水分配进行系统研究。橄榄岩熔融实验将在一定的压力、温度和总H2O含量范围内进行，这些压力、温度和总H2O含量被认为涵盖了地球上地幔部分熔融的条件。氢和氘的分配系数将在这些实验中使用离子微探针测量，并将在相同的实验中与主要元素和选定的微量元素（Li、Be、B、LILE、HFSE、REE）一起测量。这项研究将提供详细的数据，矿物和熔体之间的水分配的变化作为上地幔深度的函数，并将直接比较矿物/熔体分配的水与上地幔矿物中的亲石微量元素。

Under this award, the PIs will conduct a systematic study of the partitioning of water between common upper mantle minerals (olivine, pyroxenes, garnet) and hydrous silicate melt. Peridotite melting experiments will be conducted over a range of pressure, temperature and total H2O content thought to span the conditions of partial melting in the Earth's upper mantle. Partition coefficients for hydrogen and deuterium will be measured in these experiments using the ion microprobe, and will be measured together with major elements and select trace elements (Li, Be, B, LILE, HFSE, REE) in the same experiments. This study will provide detailed data on the variability of the partitioning of water between minerals and melt as a function of depth within the upper mantle, and will directly compare the mineral/melt partitioning of water with that of lithophile trace elements in upper mantle minerals.