Multivariate statistical analysis tool for the interpretation of geoelectrical data: Application to sterile bodies in the sidi chennane phosphatic deposit (Morocco) [Application des méthodes d'analyses statistiques multivariées à la délimitation des anomalies de Sidi Chennane]

The geophysical data carried out in sidi chennane phosphatic deposit in oulad abdoun basin,were subject to statistical analysis: a simple descriptive analysis followed by a multi-statistical analysis: principal component analysis (pca) and a hierarchical cluster analysis (hca). our database consists of 41 schlumberger vertical soundings with the electrode spacing abranges from 6m to 300m. the principal component analysis provided us with important information on the dispersion of electrical soundings (individuals) on de bases of the apparent resistivity values and ab which highlights the geoelectric mapping of study area. this classification is naturally related to geological features,known through the well drillings data in the area. the multi-statistical analysis proved reliable in the interpretation of a large number of electrical surveys to have an overall view of the distribution of apparent resistivity in the whole area.