EVALUATION OF THE STRUCTURAL ELEMENTS USING GRAVITY AND MAGNETIC DATA AT SOUTHERN PART OF SINAI PENINSULA, EGYPT

In this study, we present a reconnaissance study to elucidate and delineate the subsurface structures and tectonics of the southern part of the Sinai Peninsula using available geophysical data; including high resolution Bouguer gravity and aeromagnetic data. The study area is selected due to its active tectonic situation. The analysis techniques used are reduction to the pole (RTP), low and high pass filtering and forward modeling to process the aeromagnetic and gravity data. Moreover, wave number filtering and sun shading techniques have been carried out utilizing three types of filters with varying wavelengths. The quantitative interpretation is performed using two dimensional modeling and analytical signal techniques to discriminate the variable sources of specific depth ranges for the residual and regional anomalies. Three basement cross sections have been generated using the 2D-modeling to support and refine the interpreted structures. To reveal the tectonic zones and structures, depth estimations have been conducted by applying the analytical signal and 2D-modeling techniques. It is found that the main tectonics in the study area have NW-SE, NE-SW and E-W trends. It is found that the average depth values to the basement complex range between 0.5 to 4 km and to the basement intrusions 35 m and 500 m.