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测定了云南永善肖滩前寒武系—寒武系界限Sr同位素组成及湖北省三峡剖面震旦系碳酸盐岩Sr、C同位素组成 ,并与蒙古、加拿大、西伯利亚和纳米比亚的末元古系Sr和C同位素数据进行了比较 ,得出末元古纪海水87Sr/ 86Sr和δ13C值的演变图。通过该演变图 ,可以对全球末元古系地层进行对比
The Sr isotopic composition of the Precambrian-Cambrian boundary and the Sr and C isotopic composition of Sinian carbonate rocks in the Sanxia section of the Three Gorges of Yunnan Province were measured and compared with those of the Proterozoic in Mongolia, Canada, Siberia and Namibia The data of Sr and C isotopes are compared and the evolution of 87Sr / 86Sr and δ13C values of the Proterozoic seawater is obtained. Through this evolution map, we can compare the global Proterozoic strata