## 4 Results and Discussion
### Gradient Tensor Analysis of Bou Azzer Inlier  
The approach employed (GTA) still performant in highlighting shallow formations in all directions (Figures 4, 5 and 7), thus its application allows us to highlight a basic complex (Bc) of the Tonian--Cryogenian series of Tachtamt-Bleida which lies in the center between the ophiolitic complex of Bou Azzer and Jbel Boho. It is mainly composed of basalts, which explains its high magnetic susceptibility. Note also that a fragment of serpentinite known as Takeroumt's (TK) was also better understood by applying this gradient, the latter is associated with the Cryogenian oceanic subduction system. We also note the continuous interruption of the Foum Zguid dyke all along the NE-SW axis, which corroborates with the geological map, thus the responses obtained at the level of the Horizontal invariants reflect the deep character of said dyke. It is noted that the application of GTA allowed us to attenuate the noise effect. Note that it is difficult at this stage to carry out a precise mapping of the study area given the great contrast that appears at the level of the gradient t  
Figure 7: **(A)** Global map of Bou Azzer Lineaments obtained by Gradient tensor Analysis. (B) Rose diagram of observed faults. (C) Rose diagram of magnetic lineaments obtained by Gradient tensor Analysis and (D) Rose diagram showing the synthesis contacts in the study area. easily detect a certain number of tectonic events having affected the study area. On the one hand, there is a slight offset at the level of serpentinites at the level of the Ait Ahmane sector. This is due to the presence of a fracture N70\({}^{\circ}\) with sinistral lateral rejection, it is acts of Irthem fault (Figures 4 and 7). On the other hand, we have detected at the level of the Foum Zguid dyke a fracture oriented N120 with a sinistral component which corresponds to the AMAA. We note that throughout the ophiolitic complex several fractures appear (Figure 7), they are mainly oriented N40 to N60 with a left lateral strike-slip movement. Note that throughout the northern part of the ophiolitic complex, we notice the presence of a strong negative vertical gradient which can probably be attributed to the Anti-Atlas Major Accident (Figure 3). Meanwhile, the GTA enables us to separate closely spaced bodies and allows clear visualization of the plunging bodies, which will allow us to determine the plunging direction. The aforementioned GTA will help locate the maxima above the causative sources. Therefore, it will ensure a good visualization of magmatic intrusions, especially those of a basic nature as present in the study area (Figure 7A). We note that the aforementioned study region is distinguished by the presence of a famous ophiolitic complex, with 70% serpentinization. The obtained results (Figures 4, 5 and 7A) easily allow one to identify the anomalies of high magnetic susceptibility. Through the analysis of the map, we observe that the Bou Azzer complex represents a solitary serpentine structure along the WNW-ESE axis, confirming the fragmented nature of said ophiolitic complex. It is worth noting that the aforementioned complex exhibits a northward plunging direction. Similarly, we observe a lateral continuity towards the west of the Takeroumt's serpentinite fragment. Also, GTA allows the balancing of anomalies originating from both shallow and deep origins and to accentuate specific features of interest (Figures 5 and 7A), such as the edges of magnetic bodies. GTA can emphasize the edges of the anomalies identified in the Bou Azzer sector. We would like to point out that the cobaliferous and nickeliferous mineralization is located at the contact between the ophiolitic complex, in other words, between high-amplitude anomalies and the surrounding rocks. Hence, it is important to map these contacts. This method exhibits remarkable traits, as it generates peak amplitudes at the edges of the source and equalizes signals originating from both shallow and deep sources.