## 5 Results
### Depth Estimation for Signature Patterns  
Two depths profiles oriented in NW-SE and NE-SW (Section X-X\({}^{\prime}\) and Y-Y\({}^{\prime}\) on Figures 11 and 12) are used to estimate the depths to the source of gravity anomalies. Each depth profile plotted for 10 to 40 km wavelength focused on shallower features and 30 to 80 km wavelength, where 10 to 40 km wavelength characterizes shallower features while the 30 to 80 km wavelength targets the deeper features. Postulated structural  
Figure 10: Air-FTG data processed through Contact Lineament Processing (CLP) filter that allows a slicing at different frequencies and wavelengths to capture data at variable depth ranges. (**A**) CLP Map for wavelength 5–20 km; (**B**) Interpretation of structural trend on CLP map of (**A**); (**C**) Rose plot diagram representing NE-SW to N-S orientations from the interpreted structural trends in (**B**). (**D**) CLP Map for wavelengths 20–50 km; (**E**) Interpretation of structural trend on CLP map of (**D**); (**F**) Rose plot diagram representing many directions for the structural trends interpreted in (**E**), with dominant broad NW-SE trend. (**H**) CLP Map for wavelength 50–100 km; (**I**) Interpretation of structural trend on CLP map of (**H**). (**G**) Rose plot diagram representing NW-SE to NNW-SSE orientation from interpretation in (**I**). The rectangle is representing the circular structure discuss in text and the red arrows are highlighting the NE-SW trend that consistently appearing at all depth ranges and should be treated with cautious. discontinuities were interpreted from the depth estimates and plotted in depth profiles (Figures 11B and 12B). The depth maps for the airborne gravity data are represented in horizontal and vertical sheets. Horizontal sheet has the potential to highlight fault blocks or any tabular shaped features, while vertical sheet map may reveal fault zones, narrow ridges and intrusive dykes. Depth profiling helps to reveal broad geometry features including the basement surface and elements of material above the basement. Short and long wavelength responses from the FTG depth profile appear relatively consistent with similar patterns at different depth. Profile X-X' (Figure 11B) with a broadly continuous suite of shallow anomalies with a few variations at depth that may represent a series of folded or faulted strata. The short wavelength solution for profile X-X' matches the interpreted horizon(s) for top carbonate of Cycle IV/V (pointed with red arrows in Figure 11C-F). The longer wavelength solution appears to reflect deeper stratigraphic horizons that are deformed with abrupt changes of depth that could suggest host and graben structures (pointed with blue arrows in Figure 11C-F). Although depth profiling reveals what may be a broad geometry representing the top of the basement and elements of material above the basement, the anomalies detected are unconstrained and should not be taken as an accurate representation of the subsurface. Cross examination with nearest seismic lines allows for a validation of the possible geological structures represented in the depth profiles. Depth profile X-X' in NW-SE direction is examined together with parallel seismic lines 1004 and 1014 (Figure 11C,D). Depth profile X-X' is perpendicular to the NE-SW structural trends interpreted as minor structural trends on most aeromagnetic and airborne gravity maps (Table 2). Faults striking in NE-SW directions are marked in seismic lines 1004 and 1014 (Figure 11E,F) and are seen to offset  
Figure 11: **(A)** Location of the depth profile X-X’ and seismic lines 1004 & 1014. **(B)** Depth profile X-X’ oriented in NW-SE. **(C,D)** Uninterpreted seismic sections for line 1004 and 1014 respectively. **(E,F)** Interpreted seismic for line 1004 and 1014, respectively. The blue and orange arrows are highlighting similar features pointed on the depth profiles and on seismic data. The seismic lines are marginally longer than the depth profile X-X’.