DELIMITATION OF CONCEALED REGIONAL AND LOCAL MAGNETIC STRUCTURES, WADI EL - DEIR AREA, NORTHERN EASTERN DESERT, EGYPT | ||
| Journal of Egyptian Geophysical Society | ||
| Volume 7, Issue 1, 2009, Pages 97-106 PDF (11.4 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jegs.2009.380884 | ||
| Author | ||
| A.A. HOSNY | ||
| Nuclear Materials Authority, P.O. Box 530 Maadi, Cairo, Egypt | ||
| Abstract | ||
| The area under study is situated around Wadi El – Deir, Northern Eastern Desert, Egypt. Its surface area reaches about 160 km2. Various rock units are exposed and represented by different lithologic units, ranging in age from Late Paleozoic to Quaternary. The present study is concerned with the analysis of the reduced to the north pole (RTP) aeromagnetic data of the study area. This data was treated using different separation techniques to isolate the shallower components from the regional ones. Two computed depth estimation techniques were applied to the causative mass. The near – surface and the deep - seated magnetic bodies attain 1.30 km and 2.38 km respectively. This was achieved through the computation of local power spectrum of the RTP aeromagnetic data. Filtering of this data at the computed two interfaces was conducted to assist the separation of the shallow (near-surface or residual) and deep (deep – seated or regional) magnetic anomalies. Three maps were prepared, the first for the analytic signal and the other two for Euler deconvolution. Results of the trend analysis for the three magnetic maps are presented. The structural elements affecting the study area were drawn from the RTP as well as the residual and regional magnetic - component maps. These interpreted structural lineaments were found to trend in the NW, NNW, N-S and ENE directions. The interpreted subsurface structural patterns of the RTP, the residual and regional magnetic - component maps were matched with the Euler deconvolution and the analytic signal maps of the study area to detect the active subsurface faults | ||
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