A Ground Penetrating Radar and Electrical Resistivity Tomography Prospection for Detecting Sterile Bodies in the Phosphatic Bearing of Sidi Chennane(Morocco)  

作　　者：Nora El Assel Azzouz Kchikach Teresa Teixido Jose Antonio Pena Mohammed Jaffal Roger Guerin Pascale Lutz Es-Said Jourani Mbarek Amaghzaz 

机构地区：[1]Equipe de Recherche E2G,Universite Cadi Ayyad,Marrakech,Morocco [2]Laboratorio de Geofisica Aplicada,Instituto Andaluz de Geofisica,Universidad de Granada,Spain [3]Universite Pierre et Marie Curie-Paris,UMR 7619 Sisyphe,Paris,France [4]Institut Polytechnique LaSalle Beauvais,Department Geosciences,Beauvai,France [5]Groupe Office Cherifien des Phosphates(OCP),Khouribga,Morocco

出　　处：《International Journal of Geosciences》2011年第4期406-413,共8页地球科学国际期刊（英文）

基　　金：part of the A/3820/05 and A/025780/09 Projects,financed by the Spanish Agency of International Cooperation(AECI,PCI-Mediterranean);support of the integrated action MA/209/09(Morocco-French,volubilis program).

摘　　要：In Sidi Chennane deposits (Morocco), the phosphatic series is composed of regular interbedded phosphatic and marly limestone layers. Exploitation of the phosphate in these deposits collides frequently with problems bound to the existence, in this series, of sterile bodies qualified as derangements. They cause two kinds of problems: 1) as they are hard, compact and masked by a Quaternary cover, they disturb the exploitation in some yards and give bad reserve calculation;2) even the use of wells and mechanical boreholes did not evidence their delimitation. Our study shows that these bodies can be detected and delimited using ground penetrating radar and electrical resistivity tomography methods. It is based on the acquisition and the interpretation of series tests using these methods carried out above visible sterile bodies in a trench of exploitation in order to have geologically valid information. The article concerns to the analysis of the results and of the proceeding for a possible large geophysics survey.In Sidi Chennane deposits (Morocco), the phosphatic series is composed of regular interbedded phosphatic and marly limestone layers. Exploitation of the phosphate in these deposits collides frequently with problems bound to the existence, in this series, of sterile bodies qualified as derangements. They cause two kinds of problems: 1) as they are hard, compact and masked by a Quaternary cover, they disturb the exploitation in some yards and give bad reserve calculation;2) even the use of wells and mechanical boreholes did not evidence their delimitation. Our study shows that these bodies can be detected and delimited using ground penetrating radar and electrical resistivity tomography methods. It is based on the acquisition and the interpretation of series tests using these methods carried out above visible sterile bodies in a trench of exploitation in order to have geologically valid information. The article concerns to the analysis of the results and of the proceeding for a possible large geophysics survey.

关 键 词：Phosphatic Series Sterile Bodies Geophysical Prospecting GPR and ERT Methods 

分 类 号：R73[医药卫生—肿瘤]