*3.2.2 Procedures and results*

The available Bouguer gravity anomaly map of Humble Salt Dome, Harris County, Texas, USA Area (After [27]), is digitized and re-contouring with a proper equal contour interval of 2 m. Gal (**Figure 13a**), where the gravity anomalies range

**Figure 12.** *The location of humble salt dome referred in red circle on depth map (contours in feet).*

*New Semi-Inversion Method of Bouguer Gravity Anomalies Separation DOI: http://dx.doi.org/10.5772/intechopen.101593*

**Figure 13.** *The bouguer gravity anomaly map of humble salt dome (modified after Nettleton 1976).*

between 9 m. Gal at the northeastern part of the map and more slightly of the value 22 m. Gal, at the center of Humble Salt Dome.

The stratigraphic of formations, depths, thicknesses, and densities, as a controlling-point are obtained (after, [39]), were summed in **Table 10** and was used for building the two hypothetical models 1 and 2 for the Humble Salt Dome. model (1) with heterogeneous formations' densities distributions and model (2) with homogeneous formations' densities distributions, as respectively shown (**Figures 14** and **15**). For the two models, the theoretical calculations were carried for thicknesses, averages' vertical densities the averages' vertical densitiescontrasts, gravity effect, and calculated thicknesses corresponding to each of the selected five formations, which consists of the Humble Salt Dome, and was summarized in **Tables 10** and **11**.

