# Detection of Mineralization Zones Using Aeromagnetic Data
## 4 Results and Discussion
The magnetic field intensity in the research area ranges from 43,234 to 41,866 nT. High magnetic anomalies, represented by magenta and red colors, are accounted for by ophiolitic serpentinite, gabbroic rocks, metagabbro, and metavolcanic rocks, and extend in a NE-SW direction; low magnetic anomalies, represented by blue, yellow, and green colors, are accounted for by the Taref formation, Quseir formation, wadi deposits, and calc-alkaline rocks, and extend in a NW-SE direction. Figure 4: The research region’s radially-averaged power spectrum as calculated from the RTP magnetic data. The magnitude of magnetic anomalies varies between 1.175 and \(-\)2.540 nT/Km on the FVD map in greyscale (Figure 6A) and extends in the NE-SW, NW-SE, and N-S directions. The high magnetic anomalies are linked to ophiolitic serpentinite rocks, gabbroic rocks, and metavolcanic rocks, and this is indicated by the Barramiya-Um Saltit mineralization belt, whereas the low magnetic anomalies are associated with sedimentary cover, metasediments, and calc-alkaline rocks. Short-wavelength anomalies were discovered in the northeast and eastern parts of the research area, indicating shallow depths of the causative sources in comparison to the western section, which showed deeper sources associated with the presence of sedimentary deposits. The three alteration zones, which run NE-SW, E-W and NW-SE, are clearly seen here. Figure 5: (**A**) High-pass filtered map; (**B**) Low-pass and filtered map of the study area. The horizontal gradient derivative method is used to identify the borders that separate the common rock units in the area, where steep gradients occur across near-vertical contacts between units of variable magnetic characteristics [31,32]. The local peaks can be used to determine the location of the steepest gradients. The anomalies range in magnitude from 0.683 to \(-1.115\) nT/Km (Figure 6B). Most of the anomalies run in the N-S direction due the main NE-trending structure which controls the mineralization in the area. The borders of the area's more substantial amplitude anomalies can easily be seen in the HGR map everywhere across the area, while the lesser amplitude anomalies' bounds are yet unknown. The three detected shear zones are clear in this map and concordant with other methods. The AS map is shown in Figure 7. The findings of applying this filter show that the major trend is in a NE-SW direction, which corresponds to the Barramiya-Um Saltit  
Figure 6: The FVD map (**A**), and the THG map (**B**) of the research area. mineralization zone belt. Low magnetic susceptibility values (0.048-0.104 nT/Km), an indicator of demagnetization, are found in the northern, eastern, and western parts of the area in the cal-alkaline, metasediments, quaternary deposits, and Taref and Quseir formations. The ophiolitic serpentinite, ophiolitic basic metagabbro, and gabbroic rocks are connected with positive anomalies of (0.559-1.870 nT/Km) in the northeastern and southern portions. When compared to the TMI and RTP maps in the northeastern and middle parts of the region, this AS algorithm highlights the differences that are readily apparent near the borders of the ophiolitic serpentinite (Figure 3). The magnitudes of TDR anomalies on the TDR map (Figure 8) range from 0.821 to \(-1.096\) radians. Positive magnetic anomalies are associated with ophiolitic serpentinite rocks, gabbroic rocks, and metavolcanic rocks, as well as the Barramiya-Um Saltit mining belt, which is associated with NE-SW faults. The zero-contour line is important in the TDR map and is used in the detection of subsurface lineaments, so the dashed lines represent structural lineaments that are similar to those subtracted from the AS maps, where there is evidence for the formation of gold mineralization in the study region. By identifying the axes of symmetry, phase symmetry can be used to detect line-like patterns (Figure 9). The phase symmetry aids in the clarification of primary trends and lineation, and these properties can be easily mapped using it.