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本文运用显微傅立叶变换红外光谱技术对3个大别山榴辉岩中的石榴子石和绿辉石进行了观察,发现它们都含有结构水,以OH~-的形式赋存。结果表明,这些名义上的无水矿物可能是陆壳俯冲过程中将水携带进地球深部的重要载体;这些矿物中的结构水是变质流体的组成部分之一;即使在超高压阶段,变质系统也并不是“干”的。
In this paper, we observed the garnet and omphacite in the three Dabieshan eclogites using microscopic Fourier transform infrared spectroscopy and found that they all contain structural water and exist in the form of OH ~ -. The results indicate that these nominally anhydrous minerals may be important carriers of water carrying into the Earth’s deep during subduction of the continental crust; structural water in these minerals is an integral part of metamorphic fluids; even during the EHV phase, metamorphic systems It is not “dry”.