【摘要】 黄土是过去气候变化研究的重要对象之一。黄土中的碳酸盐则是黄土研究的一个重要内容。黄土碳酸盐的研究涉及了对次生碳酸盐的辨识、碳酸盐的含量、碳酸盐中的碳氧同位素以及碳酸盐的Sr同位素及其它微量元素等内容。对前人在这几个方面的研究作一初步的归纳总结,包括次生碳酸盐的辨识和提取对解释古气候环境有重要意义;碳酸盐的含量可反映出黄土和古土壤之间的不同气候状况;根据碳酸盐中的碳氧同位素则能大体定量得到古温度以及古植被状况进而反映古降水情况;而Sr同位素及其它微量元素则能反映出当时的化学风化程度,指示季风的强弱变化。更多还原

【Abstract】 Carbonates in loess is used to extract information for palaeoclimate investigations.This subject covers the distinction of secondary carbonates,weight percent of carbonates,carbon and oxygen isotopes,and strontium in carbonates,etc.Based on former investigations,a brief review was given.It summarizes on how to distinct secondary carbonates,the significances of carbonate contents,the relation of oxygen isotopes in carbonates with palaeotemperature,the relation of carbon isotopes in carbonates with flora and humidity in loess area,the relation of strontium isotopes with palaeomonsoon,etc.更多还原