| Author(s) | Salah Modhy Khalif El-Anzy |
| Affiliation | King Saud University, College of Science, Geology Department P.O. Box 20999, Kharj, Saudi Arabia |
| Title | Subsurface Structure and Alluvium Thickness of Wadi Al-Serdah Using Geomagnetic Survey |
| Source | Journal of King Saud University. Science. Volume 19, No 1. (2007/1427) |
| Abstract | The study area is located at the eastern side of the Arabian Plate and extends for about 220 km SW Al-Riyadh. This area lies between longitudes 45o 00` - 45o 07` E and latitudes 23o 30` - 23o 44` N. The main goals of this study are to detect the depth to the basement, and the deposits thickness of Wadi Al-Serdah using geomagnetic surveys. Five sites where selected in the study area for geomagnetic surveys "Loop Survey", depending on the geological and lithostratigraphic features, lineaments, and drainage system. Geomagnetic maps transferred to the north magnetic pool of the earth "RTP map." Reduction of data to the magnetic pole are derived for each site by using Oasis Montaj TM program. High-pass filter, Low-pass filter, Downward Continuation, and Upward Continuation are applied to enhance RTP maps. The 3-D Euler Deconolvtion of magnetic field data methods are applied to estimates the depth to the Basement. This study shows that the study area has been affected by tectonic movements that resulted in a variety of faults, fractures and other lineament structures. The deposits thickness of Wadi Al-Serdah increase the south ward in the study area. The depths to the Basement rocks in the selected five sites of the study area are: 5 – 33 m, 2.5 – 32 m, 0.1 – 34 m, 0.5 – 30 m, and 0.5 – 39 m respectively |
