Three Dimensional Representation of basement Surface Features for rub Al Khali Area, NE Yemen, by using Spectral Analysis Technique on Gravity data

Two dimensional power spectral analysis techniques have been applied on gravity data for AR Rub Al Khali region to estimate the depths to basement structures. The studied region is located in NE Yemen where little information about the deep geology is available. The estimated depth values are ranging between 3.5 to 9.5Km. The western and eastern parts have the deepest values while the middle part has an elevated basement features. The distribution style of deep and shallow structural features reflect the orientation of graben and horst structures with lateral displacements. The graben structures with great depths and with large areal extent highlight the importance of this region for possible oil accumulation, since most Yemen oil fields are located within graben structures. The deduced shapes, trends, and depths of these structures and their three dimensional representation are so useful and encourage the future oil exploration in this part of Yemen territory.