Abstract
Space filtering applied to the analysis of anomalous zones edges of phosphate "disturbances" of Sidi Chennane, MoroccoIn the Oulad Abdoun phosphate basin, discontinuities called commonly "disturbances" affect completely and/or partially the usual succession of the phosphatic series. Generally very hard and detectable only at the boring, these "disturbances" disturb considerably the kinematic chains of exploitation. Calculations of the reserves are distorted. The resistivity of the "disturbances" lies between 200 and 1000 Ω.m. In this specific context, a geophysical survey by geoelectric prospection had been carried out. Covering a panel of 50 Ha, this study controls had allowed to map and delimit on the surface the anomalic zones corresponding to the "disturbances". Measurements of apparent resistivity had been acquired with a Syscal2 resistivity meter of Brgm-Instruments. We propose in this present study the contribution of spatial analysis for a better interpretation of the Sidi Chennane phosphate "disturbances” map. Operators in the spatial domain like enhancement edge and laplacian high-pass filter are applied to the phosphate anomalous zones.
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