Major and trace element evaluation of the campano-maastrichtian sediments of anambra basin exposed around Enugu, Nigeria

ABSTRACT: An integrated geochemical and sedimentological study of the Campano- Maastrichtian sediment of Ajali and Owelli Formation exposed within the southern portion of the Anambra basin was undertaken to determine the sandstone provenance, tectonic setting, and paleo-weathering conditions. All sandstone samples are enriched in quartz (Q) but poor in feldspar (F) andlithic-fragments (L). The major-element concentrations of these sandstones reveal the relative homogeneity of their source. Geochemically, the sandstones are classified as quartzarenite, sub-litharenite, and subarkose. Tectonic setting discrimination diagrams suggest a passive continental margin. The sediments are enriched in SiO2 and depleted in Na2O, CaO and TiO2.Chemical index of weathering (CIW) of the sample suggests intense recycling and high degree of weathering in a humid climatic condition. Results of the elemental ratios critical of provenance compared to those of felsic and basic derived sediment of UCC and PAAS values suggests a felsic source rock. Cu/Zn, U/Th, Ni/Co and (Cu+Mo)/Zn paleo-oxygenation ratios used as redox parameters depicts an oxic environment. Finally, presence of minerals, like Anatase, Rutile and Microcline depicts an igneous and metamorphic source terrain

Evaluation of Jatropha curcas latex ointment formulations in-vitro and in-vivo

The dried latex of Jatropha curcas was formulated into ointments of 2.5; 5 and 10 w/w concentrations in hydrocarbon base B.P.C; using the fusion and levigation methods. The efficacy of the ointments was evaluated in-vitro using the agar diffusion method and cup-plate technique with the following organisms: Escherichia coli (N.C.T.C. 10418); Staphylococcus aureus (N.C.T.C. 6571); Microsporum sp.; Epidermophyton sp. and Trichophyton sp.; which were clinical isolates. For the in-vivo studies; volunteers with Tinea capitis from a primary school were used. The results indicated that the ointment formulations were active both in-vitro and in-vivo. The activities of the test formulations compared favorably with those from the standard formulations; i.e. Whitfield's ointment B.P. and penicillin ointment B.P.C. The results also indicated that the stability of latex was maintained within the ointment base over the nine months period of storage