Optical examination employing transmitted light and UV-fluorescence microscopy of palynological preparations of eighteen cutting samples representing the Alam El Bueib Member (Hautervian-Barremian), Kharita/lower Bahariya (Cenomanian), and Abu Roash (Turonian-Santonian) formations collected from the Faghur Hj5-1 well, north Western Desert, Egypt, allows the identification of three different palynological assemblages from the studied rock units. These assemblages are mainly non-marine but apparently marine at the base of the Alam El Bueib Member, as evidenced by dinocyst occurrence. In addition, the presence of the Pediastrum and chlorophycean algae ecozone, recognised in previous works, is a good datum for the Abu Roash Formation in the north Western Desert of Egypt. Three associations of palynofacies linked to lithofacies changes are recognised and employed in identification of depositional environments. The Alam El Bueib samples yielded mixed kerogen assemblages of non-marine and marine organic facies. The Kharita/lower Bahariya interval is mostly barren, possibly due to prevailing sandstone lithofacies, except for one sample at its upper part which contains a diverse palynological assemblage. The overlying Abu Roash Formation has a homogeneous kerogen composition comprising mainly granular fluorescent AOM and algae as well as rare palynomorphs. Qualitative as well as quantitative variations of palynofacies allow the reconstruction of the depositional environment. The obtained data have the potential for discriminating spatial and redox status differences and providing also information about terrestrial/freshwater influxes. Results support the model that the Alam El Bueib Member was deposited in a marginal dysoxic-anoxic to distal suboxic-anoxic basin. The Kharita/lower Bahariya unit in the studied well was deposited under marginal dysoxic-anoxic conditions whereas the overlying Abu Roash Formation in a distal suboxic-anoxic basin. Palynofacies results also show that the studied material comprises two distinct facies of kerogen. First, Type II > I kerogen (AOM-rich) is overwhelmingly dominant in the Abu Roash Formation and a few samples from the Alam El Bueib Member which are presumed highly oil-prone, whereas Type III kerogen (phytoclast-rich) is particularly common in the Alam El Bueib Member and Kharita/lower Bahariya unit which are considered gas-prone. Thermal maturity determinations obtained from colour changes of smooth-walled palynomorphs reveal that Alam El Bueib samples belong to immature to mature stages; however, Kharita/lower Bahariya and Abu Roash samples are within the immature phase.

使用透射光和紫外荧光显微镜对十八种切割样品的孢粉制剂进行光学检查，这些样品分别代表了从法古尔收集来的阿拉姆·布埃布成员（豪特维埃－巴雷米亚人），哈里塔/下巴哈里亚人（切诺曼尼亚人）和阿布·鲁阿什（突尼斯－桑托尼亚人）地层Hj5-1井位于埃及西北沙漠北部，可以从研究的岩石单元中识别出三种不同的孢粉组合。这些组合主要是非海洋的，但在阿拉姆·布伊布成员的基地显然是海洋的，这由恐龙囊肿的发生证明。此外，书皮的存在以前的工作中已经认识到的叶绿藻藻类生态区，是埃及西北沙漠北部阿布·罗什组的一个很好的基准。与岩相变化有关的古孢粉的三个关联被识别出来并用于沉积环境的识别。Alam El Bueib样品产生了非海洋和海洋有机相的混合干酪根组合。Kharita / Bahariya下部的层段大多是贫瘠的，可能是由于砂岩岩相普遍存在，除了上部的一个样品含有不同的孢粉组合。上覆的阿布罗什岩层具有均一的干酪根成分，主要包括粒状荧光AOM和藻类以及稀有的类植物形态。孢粉质的定性和定量变化可以重建沉积环境。所获得的数据具有辨别空间和氧化还原状态差异的潜力，还可以提供有关陆地/淡水涌入的信息。结果支持了Alam El Bueib成员沉积在边缘缺氧-缺氧至远端缺氧-缺氧盆地的模型。研究井中的Kharita /下部Bahariya单元是在边缘缺氧-缺氧条件下沉积的，而上覆的Abu Roash组则位于远缺氧-缺氧盆地中。岩相结果还表明，所研究的物质包含两个不同的干酪根相。首先，II型> I型干酪根（富含AOM）在Abu Roash地层和Alam El Bueib成员的一些样品中占绝对优势，这些样品被认为很容易产生油，而III型干酪根（富含破骨细胞）在Alam El Bueib成员和Kharita / Bahariya下部单元中特别常见，它们被认为容易产生气体。从光滑壁的多边形的颜色变化获得的热成熟度测定结果表明，Alam El Bueib样品属于未成熟阶段到成熟阶段。但是，Kharita /下Bahariya和Abu Roash样品处于不成熟阶段。