本文论述了中国察尔汗盐湖和澳大利亚弗罗姆盐湖沉积物中碳同位素的分布及其碳酸盐的来源。在综合分析有机碳、无机碳的放射性碳断代和~(230)Th断代数据及其地质资料的基础上讨论了成盐期的年龄。察尔汗盐湖从距今25000到9000年间沉积了大量的氯化物,为该湖的主要成盐期;弗罗姆盐湖从距今15000年以来沉积硫酸盐和氯化物。两盐湖虽分别位于南、北半球,但其气候的演变基本相同。 This paper discusses the distribution of carbon isotopes in the sediments of Chaerhan Salt Lake in China and Frome Salt Lake in Australia and the source of their carbonates. Based on a comprehensive analysis of radioactive carbon dating and ~ (230) Th dating data of organic carbon and inorganic carbon and their geological data, the age of salt formation was discussed. Chalhan Salt Lake sediments large quantities of chloride from 25,000 to 9,000 years ago, the main salt-forming period for this lake; Frome Salt Lake deposits sulphates and chlorides from 15,000 years ago. Although the two salt lakes are located in the southern and northern hemispheres, their climate evolution is basically the same.