Kinetics and Mechanisms of Diffusion, Deformation and Transformations in Plagioclase

在某些火成岩、变质和变形过程中，斜长石行为的动力学和机制将进行实验研究。将研究NaSi-CaAl的相互扩散速率。利用离子探针对长石中的含氢物质进行了研究，并研究了这些物质的浓度与压力和温度的关系。研究了硬玉和石英在钠长石破碎过程中的成核，采用不同程度的超越平衡边界的天然起始材料，用透射电镜评价了决定成核性质和速率的各种因素。这些结果将为我们解释地壳中长石的行为（它是最常见的矿物之一）的能力提供重大进展，以及关于影响矿物过程动力学和机制的因素的基本信息。

The kinetics and mechanisms of plagioclase behavior during certain igneous, metamorphic, and deformational processes will be experimentally investigated. NaSi-CaAl interdiffusion rates will be studied. The hydrogen-bearing species in feldspar will be studied using an ion microprobe, and the concentrations of these species correlated with pressure and temperature. Nucleation of jadeite and quartz during the breakdown of albite will be studied using natural starting materials with different amounts of overstepping of the equilibrium boundary and TEM used to evaluate various factors in determining the nature and rate of nucleation. These results will provide major advances in our ability to interpret the behavior of feldspar in the earth's crust (It is one of the most common minerals.), as well as fundamental information about the factors which affect the kinetics and mechanisms of mineralogical processes in general.