GEOPHYSICS LETTERS

A beer Abd El-Rehim El-Kenawy 9Figure (13) displays the locations and distribution of the depth forthe whoL area, the depths range from 0 to 3.7km. It shows that thl:';areahas a few locations that having no symbols, these few localities mayconsider as locations of deep sedimentary basins with depth more than4km.Inspection of fIrst horizontal gradientmap, gravity map, residualmap of the least-square method and the Gridepth of the 2-D Eulardeconvolutionrevealed that the central part of the area is characterizedby the presence of thick sedimentary section (basin) of about 4.5km.There is a good agreementbetween the results fi'omdifferentmethods.SUMMARY AND CONCLUSIONSThe study area is located between Latitudes 30° 00 ~and 30°30~N, and Longitudes 30044~and 31°30~B, and occupies the southernpart of the Nile Delta. The 'data used in this study consist of a Bouguermap and borehole data of the wells inside and surrounded the area. Thegravity map was used to construct the structural regime of the basementcomplex. The trend analysis, GriffIn's, second vertical derivative, leastsquares,2-D modeling, spectral analysis and Euler deconvolutionmethods were used to delineate the structural pattern, sedimentary basinsand construct the Buler deconvolution map for the depth to the basementusing the Gridepth solutions result from 2-D Buler deconvolution.The obtained maps revealed that the area is affected by differentstructural trends throughout its geological history. These include, indescending order: Aqaba (N15°-25°E), Syrian (N45°-65°E), Suez (N35°-45°W), Mediterranean (E-W), Najd (N65°W) and East Africa (N-S)trends. In addition, one main depositional center in the area is displayedon the Gridepth n;lap with a depth of more than 4 km. This location isstructurally controlled and has conside!able interest for hydrocarbongeneration, accumulation and exploration.ACKNOWLEDGEMENTThe author is greatly indebted to Prof. Dr Abmed Samir,professor of Geophysics, Geology Department, Faculty of Science,Zagazig University, for his valuable support and for reviewing themanuscript.