摘要
本文从沫阳和熊家场剖面二叠纪海相碳酸盐和玄武岩的锶同位素变化出发,讨论了碳酸盐的锶同位素组成与峨嵋山玄武岩喷发之间的关系,以及玄武岩中海相碳酸盐的锶同位素贫化原因,指出海相碳酸盐的锶同位素组成可作为了解地球构造演化的工具。
Based on the strontium isotope variations of the Permian marine carbonates and basalts from the Moyang and Xiongjia Chang profiles,the paper discusses the correlation between strontium isotopic compositions and Emei basaltic eruption and the cause of strontium isotopic depletion for marine carbonates in basaltic rocks. It is suggested that the strontium isotopic compositions of marine carbonates may provide a tool for underestanding the tectonic evolution of the Earth.
出处
《矿物岩石》
CAS
CSCD
1992年第4期80-87,共8页
Mineralogy and Petrology
基金
国家自然科学基金48970116
关键词
海相
碳酸盐
锶
同位素
演化
isotopic composition
basaltic eruption
marine carbonates
tectonic evolution
the Permian
