Near Surface Fractures Evidence from Audio-Magnetotelluric (AMT) Investigation in Ayos-Nguelemendouka Area (Eastern Cameroon)

Arsène Meying, Théophile Ndougsa Mbarga, Daniel Gouet, Patrick Assembe Stéphane

Department of Physics, Advanced Teacher’s Training College, University of Yaoundé, Yaoundé, Cameroun.
Department of Physics, Faculty of Science, University of Yaoundé, Yaoundé, Cameroun.
School of Geology, Mining and Mineral Processing, University of Ngaoundéré, Ngaoundéré, Cameroun.

DOI: 10.4236/ijg.2013.42045                

Abstract

The current study deals with an interpretation of audio-magnetotelluric (AMT) data collected in the Ayos/Nguelemendouka area, using a Stratagem EH4 unit. The study’s objective is to provide a better understanding of the area’s subsurface structure. Thus, AMT soundings were realised through seven profiles NE30° oriented, each profile made up of four stations. Data modelling highlights a SW-NE tectonic unevenness which seems to correlate with the Centre Cameroon Shear Zone. Moreover, this interpretation put into evidence an uplift of the basement at Lamba 2, a tabular structure at depth and an absence of discontinuities beneath 300 mdepth.

Keywords

AMT Sounding; Tectonic Unevenness; Stratification; Uplift; Discontinuities

Conflicts of Interest

The authors declare no conflicts of interest.

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