同位素地质学(或称同位素地球化学)是研究各种化学元素同位素在自然界的分布和运移规律,进而认识地球物质运动、演化过程,解决地质问题的一门地球科学分支.根据它所依据的原理和研究对象的不同,同位素地质学可分为稳定同位素地球化学和同位素地质年代学两部分.近20多年来,特别是七十年代初以来,国际性月球样品的研究活动促进了同位素地质学在技术上的全面发展,出现了高精度的同位素质谱分析技术、超净化实验室,加之电子计算机的广泛应 Isotope geology (or isotope geochemistry) is a branch of earth science that studies the distribution and migration of various chemical isotopes in nature, and then recognizes the movement and evolution of the Earth’s matter and the geological problems. Based on which Principle and object of study, isotope geology can be divided into stable isotope geochemistry and isotopic geochronology in two parts.In recent 20 years, especially since the early 1970s, the research activities of international lunar samples to promote the isotope geology In the all-round development of technology, there has been a high-precision isotope mass spectrometry technology, ultra-clean laboratories, coupled with a wide range of electronic computers