*3.1.1 Geological setting*

The Abu-Roash Dome Area was formed as a result of its location crossing by the western end of the Syrian-arc folds of which extends from northern Egypt to Syria (Laramide orogeny took place in Upper Cretaceous—Lower Tertiary), where the Upper Cretaceous rock formations in the northwestern desert of Egypt had undergone several different tectonic regimes.

The interest in basement depth estimation for the Abu Roash Dome Area was made by several authors' and researchers' gravitational potential studies, such as [19–21]. It is worthily mentioning that, the calculated basement depths calculated by the aforementioned authors' methods, where the depths were estimated from the used modeled body center of a sphere, an infinite long horizontal cylinder, or a semi-infinite vertical cylinder, while in the present method the basement depths are estimated from the top of an infinite horizontal slab.
