Sinai Mesozoic basalts are restricted in its southwestern portion at Um Bogma area, where they occur as intra-continental fissure-fed sills, dykes, plugs and lava flows, following mainly the older structural and crustal weaknesses planes. During Late Paleozoic - Middle to Late Triassic, Egypt had witnessed sporadic tectonic disturbances and faulting activities accompanied by volcanisms. Faulting activity continued during Early to Middle Jurassic and was associated with crustal stretching and basaltic volcanism. At Um Bogma area, southwestern Sinai Peninsula, Middle Triassic, and Early Jurassic basaltic exposures intruded/extruded the Carboniferous sandstones. The main Mesozoic basalts outcrop at Gebel Farsh El Azraq - Gebel Himayir area, where they were successfully discriminated from their surrounding country rocks using Landsat-8 dataset. The Mesozoic basaltic rocks are the least reflective rocks and exhibit a characteristic spectral curve, compared to their country rocks. Landsat-8 bands 7, 5, 3 in RGB and Principal Component Analyses (PCA) technique were used in lithological discrimination of the Mesozoic basalts and their surrounding Late Neoproterozoic basement rocks and Phanerozoic sedimentary succession. Accordingly, a new geological map was produced for the study area. Petrography and geochemistry of these basalts were addressed. Characteristically they contain substantial MgO contents (22.24 to 7.09 wt%) and exhibit low TiO₂ (1.56–0.77 wt%) and P₂O₅ (0.30–0.15 wt%) contents. Geochemically, they pertain to the low P₂O₅ –TiO₂ continental tholeiitic to transitional basalts and point out to enriched MORB magma sources. They suggest derivation from spinel-garnet lherzolite source by moderate non-modal partial melting (ca 20–30%). Their petrogenesis was discussed and fractional crystallization modeling was performed as a plausible mechanism to be accounted for their evolutions.

西奈中生代玄武岩仅限于其西南部分的 Um Bogma 地区，在那里它们以大陆内裂缝供给的窗台、堤坝、栓塞和熔岩流的形式出现，主要跟随较旧的构造和地壳弱点平面。古生代晚期—三叠世中晚期，埃及经历了零星的构造扰动和火山活动伴随的断层活动。早侏罗世至中侏罗世断层活动持续，并与地壳伸展和玄武质火山活动有关。在西奈半岛西南部的 Um Bogma 地区，中三叠世和早侏罗世玄武岩出露侵入/挤压石炭系砂岩。Gebel Farsh El Azraq - Gebel Himayir 地区的主要中生代玄武岩露头，使用 Landsat-8 数据集成功地将它们与周围的乡村岩石区分开来。中生代玄武岩是反射率最低的岩石，与其围岩相比，呈现出特征光谱曲线。RGB和主成分分析（PCA）技术中的Landsat-8波段7、5、3被用于中生代玄武岩及其周围晚新元古代基岩和显生宙沉积序列的岩性鉴别。据此，为研究区制作了新的地质图。讨论了这些玄武岩的岩石学和地球化学。它们的特点是含有大量的 MgO 含量（22.24 至 7.09 wt%）并表现出低 TiO2 RGB 3和主成分分析（PCA）技术用于中生代玄武岩及其周围晚新元古代基岩和显生宙沉积层序的岩性判别。据此，为研究区制作了新的地质图。讨论了这些玄武岩的岩石学和地球化学。它们的特点是含有大量的 MgO 含量（22.24 至 7.09 wt%）并表现出低 TiO2 RGB 3和主成分分析（PCA）技术用于中生代玄武岩及其周围晚新元古代基岩和显生宙沉积层序的岩性判别。据此，为研究区制作了新的地质图。讨论了这些玄武岩的岩石学和地球化学。它们的特点是含有大量的 MgO 含量（22.24 至 7.09 wt%）并表现出低 TiO2₂ (1.56–0.77 wt%) 和 P ₂ O ₅ (0.30–0.15 wt%) 含量。在地球化学上，它们属于低 P ₂ O ₅ -TiO ₂大陆拉斑玄武岩到过渡玄武岩，并指出了富集的 MORB 岩浆来源。他们建议通过适度的非模态部分熔融（约 20-30%）从尖晶石-石榴石石榴石来源衍生。讨论了它们的岩石成因，并进行了分级结晶建模作为解释它们演变的合理机制。