Petrological, Geochemical, and Geophysical Applications of Transmission Electron Microscopy

9418090凡勃伦拟议的工作将涉及应用透射电子显微镜和辅助技术的岩石学，地球化学，地球物理学和环境矿物学领域的重要问题。 这项研究的基本思路是了解矿物的晶体化学及其在亚纳米尺度上的反应。 将探讨的主题包括：单斜辉石中C2/c-P21/c相变的原位变温研究，单斜辉石中过量Ca的结构状态，伊利石-蒙皂石混合层和绿泥石-蛇纹石混合层的缺陷结构，热加热石棉的结构和化学变化，透闪石和其他角闪石合成过程中的时间序列研究，高压橄榄岩的高压DAC实验的淬火产物，以及层状硅酸盐的镶嵌平衡域尺寸作为超压、低温变质作用的函数。

9418090 Veblen The proposed work will involve applications of transmission electron microscopy and ancillary techniques to problems important in the fields of petrology, geochemistry, geophysics, and environmental mineralogy. The underlying thread of the research is to understand the crystal chemistry of minerals and their reactions at the sub- nanometer scale. Topics to be explored include: in situ variable-temperature studies of the C2/c - P21/c phase transition in monoclinic pyroxene, the structural state of excess Ca in monoclinic pyroxenes, mixed layer illite- smectite and defect structures of mixed layer chlorites- serpentines, structural and chemical changes in thermally heated asbestos, time series studies of tremolite and other amphiboles during synthesis, quench products from high pressure DAC experiments of high-pressure peridotite, and mosaic-equilibrium domain size of layer silicates as a function of prograde, low temperature metamorphism.