皖南风尘堆积—古土壤序列磁化率初步研究

将北方黄土研究中广泛应用的磁化率参数引入江南第四纪风尘堆积区研究，对安徽宣城风尘堆积－古土壤序列向阳剖面进行了系统的磁化率化采样、测试，根据该剖面磁化率及其曲线的变化特征，对其古气候指示意义进行了初步的探讨．

A PRELIMINARY STUDY ON THE MAGNETIC SUSCEPTIBILITY OF AEOLIAN DUST DEPOSITION PALEOSOL SEQUENCE IN THE SOUTH OF ANHUI PROVINCE

As a paleo climatic proxy index, magnetic susceptibility parameter, which has been widely used in the loess studies of northern China, is applied in the studies on quaternary aeolian dust deposition paleosol sequence located in the south of the lower reaches of the Yangtze River. \ \ On the basis of systematic sampling and measurement, the magnetic susceptibility features and their climatic implications of Xiangyang section in south Anhui are analyzed and discussed in this paper. Together with the data of chronology and strtigraphic features, the magnetic susceptibility curve indicates that the aeolian dust deposition paleosol sequence of Xiangyang section represented 8 9 large climatic cycles since later Early Pleistocene, and it was similar to that disclosed by the loess paleosol sequence developed in north China. In addition, the forming process of the reticular mottled red clay exerted a great influence on the magnetic susceptibility the section.