alexa Geophysical Assessment of the Upper Dja Series Using Electrical Resistivity Data
ISSN: 2381-8719

Journal of Geology & Geophysics
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Review Article

Geophysical Assessment of the Upper Dja Series Using Electrical Resistivity Data

Zoo Zame P, Mbida Yem*, Yene Atangana JQ and Ekomane E

Department of Earth Sciences, University of Yaounde I, Cameroon

Corresponding Author:
Mbida Yem
Department of Earth Sciences
University of Yaounde I, Cameroon
Tel: (237) 698134061
E-mail: [email protected]

Received Date: April 17, 2017; Accepted Date: May 09, 2017; Published Date: May 16, 2017

Citation: Zame PZ, Yem M, Atangana JQY, Ekomane E (2017) Geophysical Assessment of the Upper Dja Series Using Electrical Resistivity Data. J Geol Geophys 6:292. doi: 10.4172/2381-8719.1000292

Copyright: © 2017 Zame PZ, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The upper Dja series consists of carbonates and shales deposits that date 580 ± 150 Ma. Petrography and mineral chemistry studies helped to differentiate this series into many sequences including massive limestone layers with calcite (CaO3) contents of about 30 to 42%. In order to determine the subsurface distribution of these sequences, a geophysical prospection campaign was carried out in which a total of 24 vertical resistivity soundings were recorded over a surface area of 9 km2. The processing and interpretation of data using the IX1D and OpendTect modeling tools permitted the distinction of two massive limestone layers in the upper Dja series. The first layer of about 10 to 35 m thick and outcrop in few places is characterized by resistivity ranging between 1110 and 2377 Ωm, while the second layer located beyond 50 m deep is separated by a very conductive clay stone layer with a capped thickness of 15 to 35 m. 3D modeling of the top and base of these formations indicates that, the whole Upper Dja series of about 190 m thick presents folded structure. These results can constitute a useful base of information in regards to a large scale economic study of the Upper Dja limestone series.

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