【摘要】 扇三角洲是从邻近高地推进到稳定水体 (海、湖 )中去的冲积扇 ,可以分为水进型扇三角洲和水退型扇三角洲。本文以孤南——三合村洼陷下第三系发育的扇三角洲沉积为例对其发育特征及沉积类型进行了详细研究 ,并指出该扇三角洲属于水退型扇三角洲。更多还原

【Abstract】 Fan delta is the alluvial fan which develop into steady water (sea, lake). We can divide it into tansgression fan delta and dereliotion fan delta. The paper studies particularly the developmental character and sedimentary types of the fan delta deposits of lower tertiary in Gunan——Sanhecun sag, and points out that the fan delta belong to dereliotion fan delta.更多还原