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该文研究了长江中游发育末次冰期的风成堆积序列.彭泽红光、小学剖面为黄土状土→中细砂堆积,其间夹有4个淤泥层;沙场剖面,为厚层的中细砂,有4个砂质亚粘土和(或)湖相淤泥夹层.OSL与~(14)C_(org)测年揭示,前者对应末次冰期早、中期,后者为末次冰期中、后期的堆积.粒度与元素指标揭示,两剖面物质组成具有统一性,可能指示沙山堆积具有统一物质来源.推测这个源地是沙山上风向的长江河谷.小学剖面黄土状土是沙山发育过程中在下风向的衍生堆积.
In this paper, we study the sequence of the aeolian accumulation in the last glacial stage in the middle reaches of the Yangtze River.Pengze Hongguang, the primary section is loess-like soil → middle-fine sand is accumulated with 4 silt layers in between; 4 sandy loam and / or lacustrine mud silt.OSL and ~ (14) C ~ (org) dating reveal that the former corresponds to the early and middle glaciation of the last glacial, the latter is the accumulation of the last glacial period, The elemental indices reveal that the composition of the two profiles is uniform and may indicate that the source of Shashan deposits is a unified source of the Yangtze River valley. .