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Geofísica internacional

versión impresa ISSN 0016-7169


MANGA NGANDO, Akoumou; NOUAYOU, Robert; CHARLES TABOD, Tabod  y  MANGUELLE-DICOUM, Eliezer. Evidence for Precambrian faulting in the Tibati-Adamawa region of Cameroon using the audiomagnetotelluric method. Geofís. Intl [online]. 2011, vol.50, n.2, pp.129-146. ISSN 0016-7169.

The Adamawa Fault is a tectonic structure related to the Cameroon Volcanic Line. Accurate AMT measurements were made on an approximately 1,600 km2 field around the Tibati locality. This area is not well known geologically and the latest data available were compiled 50 years ago. This paper describes main stages followed for the electromagnetic determination of the fault signature. The results show several anomalous zones, attributed to the Shear Zone. They give an idea about the real electrical resistivity structure and make it possible to have a representation of the Tibati Shear Zone. These results are the preliminary of a study of Precambrian faulted structure. Important values and variations of the apparent resistivity in the study zone are provided. This feature is characterized by narrowness and great complexity.

Palabras llave : Adamawa; fault; AMT; anomalous zones; shear zone; apparent resistivity.

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