## 5 Conclusions  
The structure of the Ifni inlier was better understood through the interpretation of its gravity and electrical resistivity data. These data were obtained by digitizing the scanned maps as we did not have access to the original data. However, being aware that digitization could affect the quality of the data, we ensured that this task was carried out meticulously and with sufficient sample density to faithfully reproduce the original map.  
Furthermore, it is worth noting that the hydrogeological implications of this study are limited to fault mapping, including those hidden by recent sedimentary deposits, using the gravity method as a potent tool to detect lateral changes in rock density. The methodology employed in this study utilized classical techniques such as total horizontal gradient and Tilt derivative to detect faults from gravity maps and Euler deconvolution to determine their depth. Additionally, hydrogeologic data, such as relative permeability and groundwater flow, were analyzed to assess the significance of faults on the well's productivity.  
The resulting structural map has identified new tectonic features and confirmed the presence of previously known faults. These faults have been characterized in terms of their lateral extension, depth, and importance. The Ifni inlier is seen to be intersected by a network of faults organized into two prominent families that trend NE-SW and NW-SE. Hydrogeological data has been analyzed alongside the structural map to highlight the significance of these faults as conduits for groundwater flow.  
Discontinuities such as faults and joints provide opportunities for hydrogeological exploration drilling. Indeed, these structures provide favorable zones for groundwater accumulation in the Ifni Inlier. The use of high-resolution electrical resistivity mapping (7200 Hz) in the study area confirmed the impact of faults on groundwater potential. This map showed that areas with fault crossings have low resistivity anomalies, indicating the presence of groundwater, while healthy basement formations have high resistivity ranges. This information is valuable for mapping and identifying potential groundwater zones, helping to identify geological faults that may influence groundwater availability. This study also illustrates the importance of using regional gravity data and high-resolution resistivity in structural analysis, particularly in areas where conventional geological mapping is hampered by a lack of outcrops due to recent sedimentary deposits.  
Conceptualization, M.I.; methodology, M.I. and M.J.; software, M.I., I.R. and F.Z.E.; validation, M.J., S.B., K.A., T.A.-A., A.K. and M.A.; formal analysis, M.I., A.K. and M.A.; investigation, M.I. and M.J.; resources, M.I.; data curation, M.I. and S.B.; writing--original draft preparation, M.I., M.J., I.R., F.Z.E., S.B., F.F. and A.K.; writing--review and editing, K.A., T.A.-A. and M.A.; visualization, M.I. and M.J.; supervision, S.B. and F.F.; project administration, M.A.; funding acquisition, K.A. All authors have read and agreed to the published version of the manuscript.  
This research was funded by Researchers Supporting Project number (RSP2023R351), King Saud University, Riyadh, Saudi Arabia.  
Not applicable.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Average Resistivity (Ohm.m)** & **Frequency (Hz)** & **Constant** & **Depth** \\ \hline
200 & 7200 & 503 & 84 \\ \hline
400 & 7200 & 503 & 119 \\ \hline
800 & 7200 & 503 & 168 \\ \hline
1000 & 7200 & 503 & 187 \\ \hline \hline \end{tabular}
\end{table}
Table 2: Depth of investigation of apparent resistivity at frequency 7200 Hz in the Larb a Misti area.  
Data Availability Statement: The data presented in this study are available upon request from the corresponding author.  
The authors declare no conflict of interest.