High-Pressure Crystal Chemistry of Earth Materials

这项正在进行的研究的主要重点涉及 地球结构和晶体化学特征 据信存在于地球上地幔的物质， 过渡区 地幔Fe/Mg有序化信息 硅酸盐及其对地幔矿物方程的影响 状态和多面体扭曲的程度， 在高温下将获得10 GPa以上的硅酸盐 和使用金刚石砧压力单元的压力。 这 研究在理解地球过程中有应用， 地球深部的动态历史和现状 内部是由其组成部分性质引起的 材料. 这项研究将在地球物理研究所进行。 实验室（华盛顿卡内基研究所）， 支持美国唯一的设施，主要从事 高压，单晶，X射线衍射研究 矿物及其类似物。 晶体学 实验室还将继续为美国 材料研究社区。

The principal focus of this ongoing research involves structural and crystal chemical characterization of earth materials believed to occur in the Earth's upper mantle and transition zone. Information on Fe/Mg ordering in mantle silicates and its effect on mantle mineral equations of state and on the extent of polyhedral distortion in silicates above 10 GPa will be obtained at high temperatures and pressures using diamond anvil pressure cells. This research has application in understanding earth processes as the dynamic history and present state of the Earth's deep interior result from properties of its constituent materials. The research will conducted at the Geophysical Laboratory (Carnegie Institute of Washington), which supports the only American facility engaged primarily in high-pressure, single-crystal, x-ray diffraction studies of minerals and their analogues. The crystallographic laboratory will also continue to serve the American materials research community.