摘要
镁(Mg)是流体活动性元素及生物必需元素,广泛参与地球表层圈层所涉及的物理、化学和生物过程。最近二十年发展起来的镁稳定同位素技术为研究表生地质过程中Mg的迁移转化过程,以及相应的生态环境效应提供了新的视野。利用镁同位素在全球物质迁移与循环过程中的同位素分馏效应来示踪表生地球化学过程,对于理解生物地球化学循环、全球碳循环和气候变化等具有重要的科学意义。本文系统介绍了镁同位素分析测试技术、表生地质过程镁同位素分馏机理、镁同位素示踪表生地质过程的研究进展及其存在的问题,并对其潜在的发展方向进行了展望,以期对镁同位素体系的未来研究提供借鉴。
Magnesium(Mg) is a fluid-mobile and biotrophic element that is widely involved in the physical, chemical and biological processes of the Earth’s surface layers. The development of Mg stable isotopic geochemistry over the last two decades has provided a new perspective on exploring the migration and transformation processes of Mg and the associated ecological and environmental effects in the Earth’s surficial processes. To trace the Earth’s surface geochemical processes by the Mg isotope fractionation effect in the global material migration and circulation processes is of important scientific significance for understanding biogeochemical cycles, global carbon cycle and climate change. In this paper, we have introduced and reviewed the progresses and existing problems of several key research fields, such as the Mg isotope analysis technique, Mg isotope fractionation mechanism in the Earth’s surficial processes, and applications of Mg isotopes for tracing supergene geological processes. Furthermore, we have made expectation on some potential development directions of Mg isotopes in order to provide a reference for future researches of the Mg isotope system.
作者
黄康俊
滕方振
沈冰
马龙
张宏宇
张攀
王琦
HUANG Kang-jun;TENG Fang-zhen;SHEN Bing;MA Long;ZHANG Hong-yu;ZHANG Pan;WANG Qi(State Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environment,Department of Geology,Northwest University,Xi'an 710069,China;Isotope Laboratory,Department of Earth and Space Sciences,University of Washington,Seattle,WA 98195,USA;Key Laboratory of Orogenic Belts and Crustal Evolution,MOE,School of Earth and Space Sciences,Peking University,Beijing 100871,China)
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2022年第2期213-234,共22页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家自然科学基金资助项目(41973008,41890845,41621003)
中国科学院西部之光交叉团队项目(E0290101)。
关键词
镁同位素
非传统稳定同位素
大陆风化
碳循环
地球宜居性
magnesium isotope
non-traditional stable isotope
continental weathering
carbon cycle
Earth’s habitability
