碳同位素与早元古代地层对比

本文首次较详细地研究了早元古代碳酸盐地层的碳同位素组成，样品采自华北早元古代标准地层单元──山西五台地区滹沱群，结果表明碳同位素组成随地质时代有明显的变化，并与地层层位有很好的对应关系。作者认为，碳同位素对于早元古代碳酸盐地层的对比是很有用的。

Carbon isotope and Early Proterozoic strata correlation

The first detailed carbon isotope study of the Early Proterozoic carbonate strata from the type locality of the Hutuo Group in Wutai Mountain area, Shanxi, North China, shows that δ13C values are of distinct changes with geological time, and carbon isotope has extremely well relationship with strata. The results suggest that carbon isotope is very useful for Early Proterozoic carbonate strata correlation.