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

这项正在进行的研究的长期目标是建立一个系统的液相平衡数据体，这些数据体涉及与假定的早期岩浆海洋的起源和结晶以及地幔岩浆的产生有关的模型化学系统。拟议的项目将利用活塞缸和多砧技术来确定控制模型角闪石-蓝晶石-石英榴辉岩在3gpa下熔化行为的相关系，以及控制模型橄榄岩在7 - 16gpa压力下熔化和结晶行为的相关系。这些研究结果将直接解决俯冲带岩浆生成方面的问题，并将对假定的早期岩浆海洋的形成和结晶提出额外的限制。

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.