Syn-sedimentary post-diagenetic phenomena are remarkable in Moroccan phosphates. Indeed they are reference deposits for geological study, where important interests are given of determination and identification of thes...Syn-sedimentary post-diagenetic phenomena are remarkable in Moroccan phosphates. Indeed they are reference deposits for geological study, where important interests are given of determination and identification of these geochemical phenomena. Silicification is one of the phenomena that we have studied to determine the diagenetic processes that control the new-formation of silica in phosphate series of Ouled Abdoun. This study was performed on deposit EL Halassa, which belongs to the Ouled Abdoun Basin;they spread out the Maastrichtian to Lutetian. At first, petrographic approach was applied on different terms composing the phosphate series. In a second step, a geochemical approach on the same silica and silicified facies of phosphate series Ouled Abdoun Basin for characterizing silicification deduced the probable links between this diagenetic phenomenon and facies and forms’ affect. Ten major trace elements were measured. According to the phases’ petrographic relationship, the results were presented and discussed: silicate phase, the carbonate phase and clay phase.展开更多
The consumption of non-potable water is the main cause of mortality and morbidity in the world [1]. 88% of diarrhea cases worldwide are attributed to unsafe drinking water;inadequate sanitation or inadequate is respon...The consumption of non-potable water is the main cause of mortality and morbidity in the world [1]. 88% of diarrhea cases worldwide are attributed to unsafe drinking water;inadequate sanitation or inadequate is responsible for 1.5 million of deaths every year, mostly in children [1] [2]. Household waste. Leachate can be considered among the potential sectors that can contribute to the degradation of water quality and soil. To this end, we selected physico-chemical inorganic elements like indicator of pollution in the neighboring groundwater discharge of the water table in the region of Ouled Berjal to assess the quality of the region’s water wells in M’nasra. The wells in full discharge have a very high pollution levels and water collected from wells located right near the discharge of Ouled Berjal shows lower levels of contamination. So the well water away from the landfill is quite low compared to the other groups.展开更多
文摘Syn-sedimentary post-diagenetic phenomena are remarkable in Moroccan phosphates. Indeed they are reference deposits for geological study, where important interests are given of determination and identification of these geochemical phenomena. Silicification is one of the phenomena that we have studied to determine the diagenetic processes that control the new-formation of silica in phosphate series of Ouled Abdoun. This study was performed on deposit EL Halassa, which belongs to the Ouled Abdoun Basin;they spread out the Maastrichtian to Lutetian. At first, petrographic approach was applied on different terms composing the phosphate series. In a second step, a geochemical approach on the same silica and silicified facies of phosphate series Ouled Abdoun Basin for characterizing silicification deduced the probable links between this diagenetic phenomenon and facies and forms’ affect. Ten major trace elements were measured. According to the phases’ petrographic relationship, the results were presented and discussed: silicate phase, the carbonate phase and clay phase.
文摘The consumption of non-potable water is the main cause of mortality and morbidity in the world [1]. 88% of diarrhea cases worldwide are attributed to unsafe drinking water;inadequate sanitation or inadequate is responsible for 1.5 million of deaths every year, mostly in children [1] [2]. Household waste. Leachate can be considered among the potential sectors that can contribute to the degradation of water quality and soil. To this end, we selected physico-chemical inorganic elements like indicator of pollution in the neighboring groundwater discharge of the water table in the region of Ouled Berjal to assess the quality of the region’s water wells in M’nasra. The wells in full discharge have a very high pollution levels and water collected from wells located right near the discharge of Ouled Berjal shows lower levels of contamination. So the well water away from the landfill is quite low compared to the other groups.
