High Pressure Phase Equilibrium Studies Bearing on the Magmatic Evaluation of the Mantle and Crust

这项正在进行的研究有一个长期目标，即发展一套系统的关于与推测的早期岩浆海洋的起源和结晶有关的模型化学系统的液相平衡数据，以及关于从地球地幔产生岩浆的数据。拟开展的项目将利用活塞柱和多面顶锤技术，确定控制3 GPa角闪岩-蓝晶石-石英榴辉岩熔融行为的相关系，以及7-16 GPa压力下模型橄榄岩的熔融和结晶行为。这些研究的结果将直接涉及俯冲带岩浆生成的各个方面，并将对推测的早期岩浆海洋的形成和结晶施加额外的限制。

This ongoing research has a long-term objective of developing a systematic body of liquidus phase equilibrium data on model chemical systems relevant to the origin and crystallization of the presumed early magma ocean and on the generation of magmas from the Earth's mantle. The proposed projects will utilize piston cylinder and multianvil techniques to determine the phase relationships that control the melting behavior of model amphibolite-kyanite-quartz eclogite at 3 GPa and the melting and crystallization behavior of model peridotite at pressures from 7 - 16 GPa. Results of these studies will directly address aspects of magma generation at subduction zones and will place additional constraints on the formation and crystallization of a presumed early magma ocean.