## 4 Results and Discussion  
### Bou Azzer Magnetic Field  
Given the great geological and structural complexity of the region, the residual magnetic field map shows a variety of anomalies. Thus, after examining the residual Aeromagnetic map of Bou Azzer inlier (Figure 2A) we notice the presence of a large bipolar anomaly-oriented WNW-ESE, which runs along the central part of our study area, with a length exceeding 10 km. It is a linear anomaly with a positive pole more developed than the negative pole. In such a context at this latitude and with an inclination of the magnetic field which is around 45\({}^{\circ}\), it is obvious that this structure has an NNE dip. A second linear bipolar anomaly is situated in the eastern section of the inlier. It forms an elongated feature stretching in the northeast to southwest direction, covering approximately ten kilometers. It signifies a consistent continuation beyond the main geological formation. An additional set of anomalies was identified within the research area. These anomalies exhibit circular shapes and belong to a distinct group. The initial anomaly is positioned to the south of the central WNW-ESE structure within the geological formation. Its circular appearance suggests it might be a result of a basic magmatic intrusion. The second anomaly is situated to the southeast of the study region. Currently, it is challenging to differentiate among the various anomalies since all these formations exhibit significant consistency on both sides of their originating sources. As a result, the utilization of enhancement filters becomes crucial for accurately interpreting the aeromagnetic data. Hence, to ensure accurate comprehension, it is vital at this phase to employ a range of filters aimed at enhancing the analysis. This might involve attenuating prolonged wavelength anomalies in some cases or amplifying it in others. Examination of the RTP map (Figure 2B), allowed for the detection of several linear and circular formations with varying amplitudes. In furtherance of perceiving their origin, the contours lines of the positive RTP data values were overlapped on the geological Bou Azzer inlier map (Figure 6). We will address each anomaly separately in the following sections. We will begin by interpreting the positive anomalies and then move on to the negative anomalies and those with lower intensity. Figure 5: Theta map further strike lineaments (black lines) performed from the calculated Gradient Tensor and Invariants of Bou Azzer Inlier. **BAOA:** This anomaly (Figure 2B) corresponds to the ophiolite complex of Bou Azzer which runs along the central part of our inlier along a WNWW-ESE axis, showing a value greater than 2240 nT. The elevated magnetic susceptibility is attributed to the rock's nature. As previously mentioned, the ophiolitic complex has undergone near-complete serpentinization, accounting for the heightened magnetic intensity observed within this formation. This axis is evidently shifted by several strike-slip faults. **FZDA:** This anomaly (Figure 2B) corresponds to the famous Foum-zguid mafic dyke. It displays a value greater than 2000 nT (Figure 2A,B). This dyke is formed mainly by dolerites which explains its high magnetic susceptibility. The FZ dyke extends over more than 200 km along a linear NE-SW fracture. Its lower Jurassic age (Lias), suggests that it was formed during the opening of Tethys. This large dyke is an integral portion of the Central Atlantic Mignatic Province (CAMP) [47,48]. **JBA:** This anomaly showing a value of about 2100 nT (Figure 2B) is linked to the basic magmatism of Jbel Boho, then located south of the ophiolitic complex, this circular anomaly has been the subject of several studies. This magmatism is known for its richness in rare earth and copper which makes it one of the important districts in the inlier. The igneous formation includes a central syenitic core surrounded by extensive flows of volcanic lava, characterized as trachytes, andesites and basalts, which extend for tens of kilometers from the complex's center.