油气勘探证明,古三角洲沉积往往蕴藏着丰富的油气资源。尽管大型三角洲的沉积体非常巨大,但毕竟为数有限,而中、小型三角洲数量甚多,分布普遍,沉积层次清楚,已引起研究者的广泛重视。建立乡沙性中、小型河流入湖三角洲沉积模式,对于我国的油气勘探更具有实际意义。 笔者于1978～1979年间,对泗河三角洲进行了野外调查,并采集表层和柱状沉积物样品共73个。本文根据野外勘测和样品分析的资料,总结了微山湖泗河三角洲的沉积规律,并进一步探讨该类型三角洲的沉积模式。 Oil and gas exploration proved that sediments in the Paleo-Delta often contain rich oil and gas resources. Although the sediments of the large delta are very large, they are limited in number after all. However, there are many small and medium-sized and medium-sized deltas, widespread distributions and clear sedimentary layers, which have attracted researchers’ extensive attention. It is more practical for the exploration of oil and gas in our country to establish the sedimentary model of middle and small rivers into the lakes and rivers. From 1978 to 1979, the author conducted a field survey of the Sihe Delta and collected 73 samples of surface and columnar sediments. Based on the field survey and sample analysis data, the sedimentary law of the Weishan Lake in the Weishan Lake is summarized, and the sedimentary model of this type of delta is further discussed.