通过对镇江大港剖面地层结构和磁化率曲线特征的分析研究 ,以及与相邻地区风尘堆积研究成果的比较 ,认为长江中下游地区磁化率曲线的波动旋回很好的对应了黄土 -古土壤风尘堆积序列 ,记录着该区中更新世以来七次大的古气候冷暖旋回。古气候的旋回变化幅度较北方黄土区要小得多 ,冷期和暖期都存在着频繁的小尺度的气候冷暖波动 ,可与深海氧同位素曲线相比较 ;但各地下蜀黄土沉积速率和沉积环境有一定的差异 Based on the analysis of stratigraphic structure and magnetic susceptibility curve of Dagang section of Zhenjiang River and the comparison with the research results of dust accumulation in adjacent areas, it is concluded that the fluctuating cycle of the magnetic susceptibility curve in the middle and lower reaches of the Yangtze River corresponds well with the dust accumulation Sequence, record the warm and warm cycle of the ancient seven times since the Pleistocene in the area. Paleoclimate swirling amplitude is much smaller than that in the northern loess area, frequent small-scale warm and cold fluctuations exist in both cold and warm periods, which can be compared with the deep sea oxygen isotope curve. However, the sedimentary rate and deposition There are some differences in the environment