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Abstract The main targets of this study are to study the structural setting of the study area. The gravity and magnetic data is interpreted in order to delineate the subsurface structure and calculate the sedimentary cover. The gravity and magnetic methods are used to estimate and locate the subsurface structure and to delineate main structural trends of the study area. These targets achieved by using many types of data in the study area such as aeromagnetic survey, airborne gravity survey, 2-D seismic data and four wells (Ammonite-1, Foram-1, Kothayib-1 and Desouqy-1). The reduction to the pole (RTP) operation is a data processing technique applied on magnetic data that removes the latitude effect on the anomaly and makes the direction of magnetization vertical all over the map. The results presented in the RTP magnetic map indicates that the main trends in the study area are trending in the NE-SW and ENE-WSW directions. The power spectrum of the RTP magnetic and gravity data indicates that the average depth to the basement in the study area is about 4.5-5 km. The regional-residual separation technique that used to separate local structures or shallow sources from these of regional nature is based on the power spectrum analysis. The tilt derivative theory indicates that the zero contour line will be located at or very close to the fault contact. Tracing the zero contour line of the tilt derivative method map delineates the subsurface structure of the area and drawing the faults that characterized the area. The tilt derivative method (TDR) is used in the current study to enhance the gravity trends. The tilt derivative of the gravity map give more light on the edges of the gravity anomalies and fault contacts more than the original Bouguer gravity map, so it can give the major trends more simply and more clearly. This map indicates that, the main trends in the area under study are in NE-SW, NNE-SSW and ENE-WSW directions. Tilt derivative of the regional Bouguer gravity map indicates that, the main trends in the area under study are in NE-SW and NNE-SSW directions. |