Evidence of Iron Mineralization Channels in the Messondo Area Centre-Cameroon Using Geoelectrical DC & IP Methods: A Case StudyReportar como inadecuado




Evidence of Iron Mineralization Channels in the Messondo Area Centre-Cameroon Using Geoelectrical DC & IP Methods: A Case Study - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

A geophysical survey was conducted in the Kelle-Bidjocka village,Messondo subdivision, in the Centre Region, Cameroon. The data acquisition wasmade by combining Schlumberger profiling and electrical soundings along six06 profiles of 1500 m in length for a total of 64 geoelectrical stations’survey conducted through a variable mesh 100 m × 200 m, or 100 m × 300 m. Theequipment used is the DC resistivimeter Syscal Junior 48 Iris Instrument.Processing and modelling of field data are made by using the Res2Dinv, Qwseln and Surfersoftware. The investigation methods used are electrical resistivity DC and inducedpolarization IP methods. The analyses and interpretations have helped tohighlight areas of weakness or conductive discontinuities fractures, faults,shear zones, etc. in Precambrian gneiss formations, sometimes undergoingweathering processes. They identify the weathering or mineralogicalaccumulation horizons, the most promising is a mineralization channelidentified in the NE-SW direction. The highlighted mineralization ischaracterized by strong gradients of chargeability or polarization. Samples andother geological evidences observed in the area are used to associate the mostpolarizable structures with ferriferous formations. Weakly polarizable andparticularly conductive backgrounds identified by the inverse pseudo-sectionsare thought to be sulphate minerals or groundwater targets for futurehydrogeological studies.

KEYWORDS

Direct Current; IP Method; Geoelectrical Surveys; Resistivity; Chargeability; Shear Zones; Iron Mineralization

Cite this paper

Claude, N. , Théophile, N. , Patrick, A. and Crepin, K. 2014 Evidence of Iron Mineralization Channels in the Messondo Area Centre-Cameroon Using Geoelectrical DC & IP Methods: A Case Study. International Journal of Geosciences, 5, 346-361. doi: 10.4236-ijg.2014.53034.





Autor: Ngoumou Paul Claude, Ndougsa-Mbarga Théophile, Assembe Stéphane Patrick, Kofane Timoleon Crepin

Fuente: http://www.scirp.org/



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