TITLE:
Cyclostratigraphy Data as a Proxy for Geoelectrical Data Interpretation: Application to Phosphate Minerals Exploration in Matam (Senegal)
AUTHORS:
Mapathe Ndiaye, Seydou Coulibaly, Winimi Saratou Zouwinaba, Issa Ba
KEYWORDS:
Cyclostratigraphy, Geoelectrical, Vertical Electrical Sounding, Phosphate, Matam, Fuzzy Logic
JOURNAL NAME:
Open Journal of Geology,
Vol.4 No.10,
October
29,
2014
ABSTRACT: The vertical electrical
soundings on the Matam region phosphates deposits are interpreted by inversion.
To retrieve lithology from the obtained resistivities, mechanical drilling was
performed to compare directly the lithologies and the geoelectrical
resistivities. The obtained relation is not simple and is not sufficient to
interpret all the VES. This situation motivated the collection of supplementary
information from cyclostratigraphy. Geoelectrical and cyclostratigraphicinformation is combined using fuzzy
logic techniques to build a fuzzy inference system. The obtained results seem
to be consistent with the stratigraphy of the investigated region and allow
retrieving lithological succession. Further investigations are necessary for
more accurate thickness determination.