近十年我国团簇同位素地球化学研究进展  

The Research Progress of Clumped Isotope Geochemistry during the Past Decade in China

作　　者：邓文峰[1] 郭炀锐 韦刚健[1] DENG Wen-feng;GUO Yang-rui;WEI Gang-jian(State Key Laboratory of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China)

机构地区：[1]中国科学院广州地球化学研究所,同位素地球化学国家重点实验室,广州510640

出　　处：《矿物岩石地球化学通报》2020年第5期912-926,I0003,共16页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金资助项目(41722301,41173004)。

摘　　要：团簇同位素是本世纪初发展起来的稳定同位素地球化学新的研究领域,是指自然丰度较低的重同位素相互成键(如13C-18O等)形成的同位素体。其内部同位素的键合主要受控于温度,通过测定团簇同位素组成可获得温度信息。目前研究程度较深的是碳酸盐的团簇同位素温度计,其独特优势在于它不受碳酸盐形成时流体同位素组成的影响,因而在地球科学的多个研究领域被广泛应用。本文总结了近十年来我国团簇同位素地球化学在理论计算、分析方法研究、实验模拟和应用研究等方面取得的进展,建议未来除了应用研究之外,还可以利用实验模拟方法从团簇同位素的平衡理论、生物碳酸盐生命效应的影响、埋藏成岩蚀变对团簇同位素的改造等方面开展工作。另外,超高分辨率稳定同位素质谱的引进有助于推动我国CH4、O2、N2和N2O等体系的团簇同位素研究。Clumped isotope geochemistry concerns bonded stable isotopes in natural materials.The composition of clumped isotopes in a certain mineral is free from the effect of isotopic compositions of the surrounding fluid and is mainly controlled by its formation temperature,therefore can be used a reliable thermometer and has been widely used in Earth sciences research.This paper reviewed the research progress of theoretical calculation,analytical method,experimental simulation and application research in clumped isotope geochemistry in China during the past decade.It suggests that the future work may focus on equilibrium clumped-isotope effects,vital effects in biogenic carbonate and diagenetic reformations by using experimental simulations.In addition,clumped isotope geochemistry of other molecules,such as CH4,O2,N2 and N2O,will be promoted by the up-to-date technology of ultra-high mass resolution multiple-collector isotope ratio mass spectrometer.

关 键 词：稳定同位素 团簇同位素 地质温度计 CO2 CH4 

分 类 号：P736[天文地球—海洋地质]