松辽盆地是我国东部沉积型盆地之一,它形成于中、新生代时期,是我国最主要的含油气层盆地。在漫长的地质变化中,经过了数次的下降及上升等地质构造的变迁,形成了多旋回沉积岩地系。其中三角洲相最为明显。近些年来,很多学者对各类型三角洲进行了不同角度的报道及分析,且针对不同历史形成时期进行了诸多描述。本文就松辽盆地湖盆三角洲的特点,从最古老的地理环境出发,对其沉积类型进行了分类,以供探讨。 Songliao Basin is one of the sedimentary basins in eastern China. It was formed in the Mesozoic and Cenozoic periods and is the most important oil-bearing basin in China. In the long geological changes, after a number of decline and rise of geological structure changes, the formation of multi-cycle sedimentary rock system. Among the most obvious delta. In recent years, many scholars have reported and analyzed various types of delta from different angles and described many different historical formations. In this paper, the characteristics of the basin deltas in the Songliao basin, starting from the oldest geographical environment, the sedimentary types were classified for discussion.