Samples from the Devonian succession in the Sifa-1X well located mid-way between the Egyptian Faghur Basin and the Libyan Cyrenaica Platform were examined in this study. The distribution of liptinite group macerals was investigated under reflected and transmitted light microscopy. Diverse and abundant liptinites of terrigenous and marine origin were identified. The palynological investigations included analysis of the miospores assemblages and palynofacies categories by multiple statistical approaches in addition to calculation of the sedimentation rates. These analyses signified four miospores biotopes and three palynofacies biotopes that were used to assess the ramps of paleoclimatological and paleoenvironmental changes during sedimentation. These biotopes were used to define a model of liptinite maceral distribution throughout the Devonian in the study area. The model suggested two different phases of basinal dynamics in terms of climate, sea level, and sedimentation rates, namely an Early-Middle Devonian transgressive phase and a Late Devonian regressive phase. Conditions during the Early-Middle Devonian transgressive phase were oxic to dysoxic with low sedimentation rates and oxic during the Late Devonian regressive phase. Oxygen depletion was under the threshold required to induce significant preservation of the quantity and quality of organic matter, including liptinite macerals. The redox conditions were confirmed by trace element analysis. The high oxygen level affected both the quantity and quality of the liptinite macerals and greatly reduced the preservation of the amorphous organic matter. The quality of the organic matter varied from kerogen type I, II, mixed types II/III and type III. The mixture of these kerogen types was assessed by organic elemental and pyrolysis gas chromatography analyses. In addition, the entire Devonian succession in the Sifa-1X well is in the oil window, as also indicated by miospore coloration. This indicates that the organic matter in the Devonian strata have the potential to generate oil and gas.

在这项研究中，研究了位于埃及Faghur盆地和利比亚Cyrenaica平台中间的Sifa-1X井中泥盆纪演替的样本。在反射和透射光显微镜下研究了锂皂石基体的分布。鉴定出了陆源和海洋来源的丰富多样的立铁矿。孢粉学研究包括除计算沉降速率外，还通过多种统计方法分析了孢子组合和孢粉类。这些分析表明，有四个微孢子生物群落和三个孢粉生物群落生物群落被用于评估沉积过程中古气候学和古环境变化的斜坡。这些生物表层被用于定义研究区域泥盆纪中脂蛋白石的宏观分布模型。该模型根据气候，海平面和沉积速率提出了盆地动力学的两个不同阶段，即早中泥盆世海侵阶段和晚泥盆世海退阶段。泥盆纪中晚期海侵阶段的条件为低氧至低氧，沉积速率低，泥盆纪晚期海相则为低氧。耗氧量低于诱导显着保存有机物（包括锂滑石）的数量和质量所需的阈值。通过微量元素分析确认了氧化还原条件。高氧水平影响了锂皂石软化石的数量和质量，并大大减少了非晶态有机物的保存。有机质的质量从I，II型干酪根，II / III型混合III和III型干酪根变化。这些干酪根类型的混合物通过有机元素分析和热解气相色谱分析进行评估。此外，Sifa-1X井中的整个泥盆纪演替都在油窗中，这也由小孢子着色所表明。这表明泥盆纪地层中的有机物具有产生油气的潜力。Sifa-1X井的整个泥盆纪演替都在油窗中，这也由微孢子着色所表明。这表明泥盆纪地层中的有机物具有产生油气的潜力。Sifa-1X井的整个泥盆纪演替都在油窗中，这也由微孢子着色所表明。这表明泥盆纪地层中的有机物具有产生油气的潜力。