Geological Structures Controlling Au/Ba Mineralization from Aeromagnetic Data: Harrat ad Danun Area, Saudi Arabia

Positive and negative magnetic anomalies occupied the total aeromagnetic (TM) map of Harrat ad Danun area, Saudi Arabia. Reduction to pole (RTP) maps display range values (−312.4 209.4 nT) that vary in shape, size, magnitude. These generally follow NNW–SSE (Red Sea axis trend), NE–SW, NNE–SSW trends. The NNW-SSE linear positive could be brought on by buried faults, shear zones, or subsurface dikes. In central part, position Au Ba mineralization was connected this trend. It is concluded principal structures are represented NNW–SSE, tendencies. Based gridded RTP data, 2-D power spectrum computed revealed frequency near-surface deep components. believed depths shallow sources typically 80 m 570 m, respectively. Additional with varied amplitudes frequencies, trending ENE–WSW, NE–SW directions, seen when high-pass low-pass closely examined. Many faults various directions cut into these anomalies. occurrence (−36.6 nT −137.3 at depth (80 m) also confirmed map. TDR filter Euler deconvolution method were used identify horizontal variations susceptibility as well source sources. clustering rings thought caused contacts between 1 474 oriented WNW–ESE, NNE–SSW, NNW–SSE. particularly prominent western, eastern, southern, northern, zones. majority felsic mafic dikes found structures, showing three structural trends—WNW–ESE, NNW–SSE—affect studied area. This demonstrates important features zones control Arabia’s gold deposits. A anomaly centered crossing fault, plotted barite study may imply two tendencies responsible for mineralization. result raises possibility NNW feature located western part significantly impacted lineaments.