CAJ | 학술논문

微区地球化学是近年来迅速发展的地球化学分支.系统介绍了矿物微区原位Sm-Nd同位素分析技术的发展过程与现状,重点总结了目前主要的适用测试对象(如磷灰石、榍石、独居石和褐帘石等)和质谱测量过程中同量异位素干扰(包括144Sm对144Nd,130Ba16O对146Nd等)的校正方法,并展示了应用微区原位Sm-Nd分析进行年代学和造山带隆升-剥蚀定量研究的部分成果,这些应用实例充分显示了该方法在地球科学研究中所具有的重要意义.
미구지구화학시근년래신속발전적지구화학분지.계통개소료광물미구원위Sm-Nd동위소분석기술적발전과정여현상,중점총결료목전주요적괄용측시대상(여린회석、설석、독거석화갈렴석등)화질보측량과정중동량이위소간우(포괄144Sm대144Nd,130Ba16O대146Nd등)적교정방법,병전시료응용미구원위Sm-Nd분석진행년대학화조산대륭승-박식정량연구적부분성과,저사응용실례충분현시료해방법재지구과학연구중소구유적중요의의.
Microgeochemistry is one of the newly developing branches of geochemistry consisting of trace element and isotopic geochemistry of in situ analyses. This paper reports a review on in situ Sm-Nd analysis including a general developing history and status in quo of the method, with a focus on the presently measurable minerals (e.g. apatite, sphene, monazite and allanite) and correction techniques for isobar interfering (including 144Sm over 144Nd, and 130Ba16O over 146Nd). Furthermore, it illustrates some of its application instances of the analysis in chronology and orogenic uplifting-erosion. These applications show that in situ analysis of Sm-Nd isotopic system is to be a more and more valuable method in geochemical researches.