A Miocene succession exposed at the Cabo Ledo and Miradouro da Lua sections in the Onshore Kwanza Basin, Angola, was examined for palynology. Palynomorphs of preliminary late Miocene age identified are presented herein. The upper part of the Quifangondo Formation is dated as middle Tortonian in age based on the co-occurrence of the pollen grain Fenestrites spinosus and the dinoflagellate species Selenopemphix armageddonensis. The palynomorph signature indicates a middle neritic marine environment dominated by dinoflagellate cyst taxa.

A late Miocene (late Tortonian to Messinian) age is also documented for the first time at the base of the Luanda Formation based on the co-occurrence of the pollen taxa Echitricolporites spinosus, Fenestrites spinosus, Fenestrites longispinosus, Monoporopollenites annulatus, and Retistephanocolpites gracilis. The palynomorph signature of this unit reflects an inner neritic marine (coastal/lagoon transitional) environment dominated by terrestrial palynomorphs and very rare dinoflagellate cyst taxa.

The present research contributes data for improving the stratigraphical framework of the Quifangondo and Luanda formations, both of which are recognized as the main potential source rocks and reservoirs of the Post-Salt Paleogene/Neogene Petroleum System of the Kwanza Basin. This significant contribution provides important biostratigraphic and palaeoenvironmental data for defining the vital temporal horizons of these settings in a basin where petroleum exploration is of interest.

研究了在安哥拉陆上宽扎盆地的Cabo Ledo和Miradouro da Lua断面暴露的中新世继发层的孢粉学。本文介绍了已确定的中新世晚期晚期的苔藓形态。基于花粉粒棘孢粉刺和鞭毛鞭毛藻物种Selenopemphix armageddonensis的同时存在，基法基通多组的上部年龄可定为中土阶。形态特征表明中等鞭毛状海洋环境以鞭毛囊肿类群为主。

在罗安达组的基础上，也首次记录了中新世晚期（晚托东至墨西尼）年龄，这是基于花粉类群棘皮动物，棘皮动物，棘皮动物，长柄棘皮动物，单孢粉针茅和禾本科的同时出现的花粉类群的结果。该单元的孢粉体特征反映了内部陆地海洋（沿海/泻湖过渡）环境，该环境以陆地孢粉体和非常稀有的鞭毛藻类囊类群为主。

本研究为改善Quifangondo和Luanda地层的地层学框架提供了数据，两者均被认为是宽扎盆地盐下古近纪/新近纪石油系统的主要潜在烃源岩和储层。这一重大贡献为重要的生物地层学和古环境数据提供了依据，以便在感兴趣的石油勘探盆地中确定这些环境的重要时空。