## 6 Discussion  
There was a correlation between the seismic reflection data and the geology of the studied area. The geological history of sediment deposition can be correlated with the sea-level change by seismic sequence and seismic facies analysis. The deposition of sediments during the rise and fall of sea-level determines the unconformities resulted after the erosion had taken place during the geological ages. SA-Middle Giant Formation has been identified as a new seismic sequence bounded by H2 from top and H3 from the bottom and mapped to show the sediment transport direction oriented dominantly to the N/NW based on the 2D seismic data. This succession showed general trends and subdivided the large Giant Formation into upper and lower parts only, which reflected small to large scale features of the Giant Formation [52]. In this study, the first aim of seismic sequence stratigraphy was to break down the Giant succession into units called seismic sequences and system tracts based on sequence stratigraphic principles such as the reflection terminations on a seismic section. This was based on reflection patterns, seismic configurations, and well log data. These surfaces were designated as horizons from H4 to H1 over the picked unconformities on the whole seismic sections from the oldest to youngest. This study was focused on the interval from H4 to H1. These sequences are believed to represent bodies of sediments that were deposited within a particular period. They included rocks deposited in different environments from terrestrial to the deep sea, but they were all connected in one continuous body [18]. Previous literature did not explain the Upper Giant Formation in detail as it is performed in this study. The Upper Giant Formation was subdivided into two parts; Upper and SA-Middle Giant Formation based on the reflection terminations, seismic facies, and confirmed by a synthetic seismogram. The Giant formation was entirely subdivided and a new sequence boundary was discovered named SA-Middle Gian formation based on the seismic sequence stratigraphic principles. SA-Middle Giant formation represents a different depositional process and thus, a different lithofacies and depositional environment. This new interpreted interval would help to predict the source rock, reservoir, seal, and even the hydrocarbons movement trajectory. The difference of the seismic facies in the SA-Giant middle Formation revealed some chaotic facies symbolizing the channel fill towards the sea. The findings of this assessment were merged with other geological evidence such as borehole data, regional geology, and other geological reports. Most of these facies are best seen in sections parallel to depositional dip, parallel or supbarallel reflections suggest consistent rates of deposition, divergent reflections outcome from differential subsidence rates, such as in a half-graben or across a shelf-margin hinge zone. Clinoform reflections consisted of an essential class of seismic facies patterns that were common on continental margins, where they commonly represent prograded deltaic or continental-slope outgrowth. Variations in Clinoform architecture reflect different combinations of depositional energy, subsidence rates, sediment supply, water depth, and sea-level position. Sigmoidal clinoforms tend to have low depositional dips, typically less than 1\({}^{\circ}\), whereas oblique clinoforms may show depositional dips up to 10\({}^{\circ}\). Parallel-oblique clinoform patterns showed no top sets, which would be a good reservoir. Not only that but also seismic sequence interpretation was applied to improve the chances of discovering significant resources in less explored basins by offering a new investigation. Moreover, the study of these layers by the seismic technique could be used in further prospective studies in different areas. This usually implies shallow water depths with a wave or current scour and sediment bypass to deeper water, perhaps down a submarine canyon that may be revealed on an adjacent seismic cross-section.