Aeromagnetic contributions to the study of the Paleozoic basement structure of Southern High Plateaus (Eastern Morocco) |
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| Authors: | Jamila Abderbi Driss Khattach Jamila Kenafi |
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| Institution: | 1.Laboratory of Applied Geosciences, Department of Geology, Faculty of Sciences,University of Mohammed I,Oujda,Morocco;2.Regional Center for the Professions of Education and Training (CRMEF),Oujda,Morocco |
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| Abstract: | The observed aeromagnetic anomaly map of Southern High Plateaus provides general information about the magnetization variations that are associated with subsurface magnetic sources, but it does not bring clear information about all geological elements of the study area. In this work, we attempt, by analyzing these aeromagnetic data, to determine structures of Paleozoic basement that may indicate the presence of major deep-seated structures in this area. To better understand and outline the basement geological structures, two approaches have been performed. Such analysis includes application of a low-pass filtering and spectral analysis, which permits an enhanced visual interpretation of the magnetization sources and leads to a better knowledge of the geological structures especially basins or intrusive bodies. The results obtained show magnetic anomalies indicating geological features trending NE–SW. They also reveal two depths of magnetic sources in the area. The deeper sources range from 1074 to 4057 m and reflect the Paleozoic basement. However, the shallower sources range from 153 and 596 m reflecting magnetic sources shallower than the basement. The outcomes of this study suggest a new structure and will contribute to better understand the characteristics and organization of the basin as well as the improvement of the geological map of the area for hydrocarbon exploration. |
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