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ABSTRACT
This study presents the findings of sedimentological analysis carried out at Bawa Hill in Isame Community, along Auchi-Igarra road. This study investigated the depositional processes and paleonvironment of sediments at the time of deposition. Methodology utilized consist of outcrop studies and laboratory analysis including grannulometry and gravel mophometric analysis. Eight samples were collected; the sediments range from fine to gravel (graphic mean of 0.1 to 5.40), poorly to extremely poorly sorted (standard deviation of 3.2 to 5.81) and have variable peakedness (mesokurtic to leptokurtic, graphic kurtosis of 1.07 to 4.65). Additionally, the inclusive skewness values (0.06 to 8) provide information on the symmetry of the grain size distribution. In addition, Pebble mophometric analysis was conducted on the gravels show varying Oblate-prolate Index (OPI) and Maximum Projection Sphericity Index (MPSI) values across the samples, indicating a range of pebble shapes. For example, OPI values for samples 1 to 8 ranged from - 6 to 14, and MPSI values ranged from -4 to 23. Furthermore, an integration of data from grain size analysis, pebble shape analysis, and ternary plots suggest that the sediments are first cycle derived from granitic precambrain basement rocks and deposited under alluvial to fluvial paleoenvironment.
