摘要
非传统稳定锶同位素(δ^(88)/^(86)Sr)的研究近年来已取得了较大的进展,其主要研究内容集中在讨论稳定锶同位素在海洋地球化学中的应用,主要包括以下几个方面:稳定锶同位素(δ^(88)/^(86)Sr)在自然界主要储库中的组成、显生宙海水δ^(88)/^(86)Sr的变化规律和海洋中锶同位素系统平衡的评估。海水中的锶同位素组成在显生宙发生过较大的变化,通过对海洋锶同位素体系对各输入和输出通量组成动态变化的响应评估表明,现代海洋锶同位素体系处于不平衡状态,这一现象被归因于冰期后的风化顶峰尚未结束。联立放射性锶同位素87Sr/^(86)Sr和稳定同位素δ^(88)/^(86)Sr所建立的完整的锶同位素体系相较传统放射性锶同位素87Sr/^(86)Sr能够对海洋锶地球化学循环的动态过程进行更好的评估,在海洋地球化学相关领域具有广阔的应用前景。
The study in non-traditional stable Sr isotope（δ^88/86^Sr）has achieved a great development for the past few years,and recent research interests are mostly centered in the application in marine geochemistry.Based on publicated researches in recent years,we summarized the research achievements in the application of stable Sr isotope,including the compositions of stable Sr isotope in major natural reservoirs,the variations of Sr isotope composition in Phanerozoic seawater,and the reassessment of the marine Sr system.δ^88/86^Sr value in seawater has experienced a great change in Phanerozoic.The integrated strontium isotope system combined with traditional radiogenic isotope δ^87/86^Sr with stable isotope δ^88/86^Sr can help better reassess the marine Sr cycle than the only one factor,the traditional δ^87/86^Sr ratio.There has been reported that modern marine Sr system is now being unstable,owing to the post-glacial ＂weathering peak＂.By summarizing these research advances,we try to offer more enlightenment of the application of Sr isotopes system in marine geochemistry.
作者
李百蝉
冯兰平
王倩
陶云
周炼
Li Baichan;Feng Lanping;Wang Qian;Tao Yun;Zhou Lian(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences（Wuhan）,Wuhan 430074,Chin)
出处
《地质科技情报》
CSCD
北大核心
2018年第4期100-105,共6页
Geological Science and Technology Information
基金
国家自然科学基金项目(41473007
41673013)
