Exploiting Aeromagnetic and Gravity Data Interpretation to Delineate Massif Deposits of Rehamna Area (Western Meseta-Morocco)

  • Kawtar Benyas Laboratory of Analysis and Modelling of Water and Natural Resources. Mohamed V niversity - Rabat. Morocco
  • Abdellatif Aarab Laboratory of Analysis and Modelling of Water and Natural Resources. Mohamed V University - Rabat. Morocco
  • Abdelmounim Qarbous Scientific Institute. Department of Earth Sciences, Rabat, Morocoo
  • Abdellah Lakhloufi Laboratory of Analysis and Modelling of Water and Natural Resources. Mohamed V University - Rabat. Morocco
  • Ahmed Manar Ministry of Energy, Mines, and Sustainable Development, Geology Directorate, Applied Geology Division. Morocco
  • Mounir Amar Cherifien Phosphates Office
  • Assia Idrissi Department of Earth Sciences, Faculty of Sciences. Mohamed V University, Rabat, Morocco
  • Mohamed Elmimouni Laboratory of Analysis and Modelling of Water and Natural Resources. Mohamed V University - Rabat. Morocco
Keywords: Aeromagnetic analysis, Gravimetry, Horizontal gradient, Vertical derivative, Rehamna Massif, Morocco

Abstract

The analysis of the magnetic signatures and gravity gradient values of the Rehamna Massif south of the Moroccan Western Meseta by using Geosoft Oasis Montaj 7.0.1 software, allowed us to detect several useful anomalies to be exploited and which are related to magmatic bodies and structural features within the study area. These data were analyzed by applying several techniques, including the horizontal gradient filters combined with the first vertical derivative. Subsurface structures; such as geological boundaries, faults, dykes and folds, were visualized as lineaments on geophysical maps, then results were compared with structural features provided by previous studies in the region. Thus, the Rehamna Massif structural map shows sets of linear features which may represent faults or boundaries of geological structures, which can be either faults or boundaries of geological structures, and they are mostly oriented in the directions: N-S, NNE-SSW, NE-SW, E-W with the predominance of the NNE-SSW to NE-SW directions. In addition, the super position of the minerals bearing beds or formations were distinguished from gravity and magnetic data processing results. Some of the recognized anomalies are related to the existence of precious metals which belong to the granitic bodies within the study area.

Published
2021-09-28