Stable Isotope Geochemistry

我们建议继续实验室目前正在进行的几项研究，如下：(1)利用硅酸盐-碳酸盐交换技术实验测定氧同位素平衡常数。(2)榴辉岩氧同位素研究。(3)巴西碳酸盐岩同位素研究。(4)地壳岩石的成因，如科希斯坦岩基。(5)核废料储存库的天然类似物的同位素和微量元素研究。(6)原始和分异陨石中氧、硅同位素的变化；原始无球粒的微量元素研究。(7)气体与熔融硅酸盐之间氧同位素交换动力学的实验室测量，用于球粒起源研究。(8) SNC陨石中H2O和CO2与行星表面过程的相关性研究。

We propose to continue on several lines of research in which the laboratory is currently active, as follows: (1) Experimental determinations of oxygen isotope equilibrium constants using silicate-carbonate exchange techniques. (2) Oxygen isotope studies of eclogites. (3) Isotopic studies of Brazilian carbonatites. (4) origin of crustal rocks as seen in the Kohistan batholith. (5) Isotopic and trace- element studies of a natural analog of a nuclear waste repository. (6) Oxygen and silicon isotope variations in primitive and differentiated meteorites; trace-element studies in primitive achondrites. (7) Laboratory measurement of the kinetics of oxygen isotope exchange between gases and molten silicates for application to the origin of chondrules. (8) Investigation of H2O and CO2 in SNC meteorites for their relevance to planetary surface processes.