Lithostratigraphy and Characterisation of Paleocene Limestones for Optimal Exploitation (Senegal, West Africa): Comparative Study of the Bandia and Popenguine Quarries  

作　　者：Mohamadou Moustapha Thiam Adama Dione Moumar Dieye Diakher Hélène Madioune Diodio Diouf Mohamadou Moustapha Thiam;Adama Dione;Moumar Dieye;Diakher Hélène Madioune;Diodio Diouf(Ecole Nationale Supérieure des Mines et de la Géologie, Cheikh Anta Diop University, Dakar, Senegal;Département de Géologie, Cheikh Anta Diop University, Dakar, Senegal)

机构地区：[1]Ecole Nationale Supérieure des Mines et de la Géologie, Cheikh Anta Diop University, Dakar, Senegal [2]Département de Géologie, Cheikh Anta Diop University, Dakar, Senegal

出　　处：《Geomaterials》2023年第3期51-60,共10页地质材料（英文）

摘　　要：Limestones of different facies in the Senegal basin are most commonly used as aggregates, regardless of their petrographic properties. These differences may influence their behaviour. The aim of this paper is to study the stratigraphy and characterise the limestones of the Bandia and Popenguine quarries. Sampling and geochemical and geotechnical characterisation were carried out on these limestones. The results show the presence of several very different facies in the Paleocene formation. The geochemical study shows that the Bandia limestones (Bd2) have the highest CaCO₃ percentages (98.54%) and the highest SiO₂ percentages were recorded in the Popenguine limestones (Pop2). The study also gives MDE values of 22.38 and LA of 22, which are acceptable for use in road construction. It is important to carry out a complete study in order to select the right materials for optimal use.Limestones of different facies in the Senegal basin are most commonly used as aggregates, regardless of their petrographic properties. These differences may influence their behaviour. The aim of this paper is to study the stratigraphy and characterise the limestones of the Bandia and Popenguine quarries. Sampling and geochemical and geotechnical characterisation were carried out on these limestones. The results show the presence of several very different facies in the Paleocene formation. The geochemical study shows that the Bandia limestones (Bd2) have the highest CaCO₃ percentages (98.54%) and the highest SiO₂ percentages were recorded in the Popenguine limestones (Pop2). The study also gives MDE values of 22.38 and LA of 22, which are acceptable for use in road construction. It is important to carry out a complete study in order to select the right materials for optimal use.

关 键 词：STRATIGRAPHY Paleocene GEOCHEMICAL LIMESTONE Bandia Popenguine 

分 类 号：P53[天文地球—古生物学与地层学]