在湖泊中存在三种三角洲类型 ,即正常三角洲 ,辫状三角洲和扇三角洲。它们均由三角洲平原、三角洲前缘、前三角洲三部分所组成。陆相地层具有强烈的旋回性 ,只要将基准面看成海平面就完全可以运用层序地层学思路与方法研究陆相地层。扇三角洲相在断陷湖盆的陡坡一侧发育 ,通过与标准三角洲副层序模式对比 ,一个完整的扇三角洲序列可以划分出两个副层序。 There are three types of delta in the lake: normal delta, braided delta and fan delta. They are made up of three parts: the delta plain, the delta front and the former delta. Terrestrial strata have a strong cycle, as long as the datum as a sea level can use sequence stratigraphy ideas and methods of terrestrial stratigraphy. The fan-delta facies developed on the steep slope side of the fault-depressed lake basin. By comparison with the standard delta secondary sequence model, a complete fan delta sequence can be divided into two secondary sequences.