CHARACTERISING THE FRAMEWORK OF THE SAND FACIES

ABSTRACT

A total of ten (10) beds exposed at the Ekosodin/Evbuomore were obtained and studied. These beds belong to the Benin Formation of the Niger Delta Basin. Sieve analysis was carried out on them, with the results plotted and the mean, standard deviation, skewness and kurtosis calculated. These calculations were used to interpret the provenance, depositional process and environment of deposition. The beds mainly contain quartz, feldspar and detrital fragments revealing their igneous and metamorphic origin. The  results indicate  that  the  grain  size  were fine to medium to very coarse  sand; poor to very moderately well sorted,  coarse to near symmetrical to assymetrically skewed  and platykurtic to near mesokurtic to leptokurtic (Table  1). The values obtained from the standard deviation for the beds range from   0.95 to 1.82 (Table 1) suggesting near moderately well sorted to poorly sorted. The depositional process that led to the deposition of the beds is fluvial (river systems)  suggesting a low energy of transportation of the sediments.