作　　者： ; ; ; ; ; ;

机构地区： 中国科学院青海盐湖研究所

出　　处： 《盐湖研究》 2005年第4期5-8,共4页

摘　　要： 在青海湖南岸黑马河2.2 m厚的黄土剖面中,以5 cm的间隔采样,进行了碳酸盐、碳酸盐中Sr含量以及磁化率的测定,通过对比分析研究了12.7 ka以来青海湖湖区古气候的变化,结果表明碳酸盐、碳酸盐中Sr含量、磁化率等基本较真实的记录了该区自12.7 kaBP以来经历的多次暖湿—干冷古气候变化过程。 In Heimahe loess section, we collected samples in a 5 cm interval from bottom to surface about 2.2 m depth, and then measured the cotents of carbonate, Sr and Susceptibility. We found the palaeoclimate changes since 12.7 ka in Qinghai Lake area by means of contrasting and analyzing. The results indicated that the contents of carbonate, Sr and suceptibility had a fine correlation and could be used as the proxy to discuss the palaeoclimate fluctuations and truly reflect the freqencies of warm-wet and dry-cold changes since 12.7 ka.

关 键 词： 黑马河 黄土 碳酸盐 磁化率 古气候变化

领　　域： [天文地球] [天文地球]