Abstract
A detailed investigation of the lower part of the Bahi Formation in the northwestern Sirt Basin was undertaken to describe its sedimentological texture, to determine its environment of deposition as well as to test the existing techniques of environmental analysis.
The lower part of the Bahi sandstone is fine to very coarse, poorly to moderately well sorted, fine to coarse skewed, and mesokurtic to leptokurtic sand. Grain size frequency distributions tend to exhibit a weakly developed bimodality. Sorting and skewness, consistent with changes in local paleotopography and regional paleoslope.
Environmental interpretations based on four bivariate grain size parameters combinations were achieved with cumulative probability curve techniques and with the regional stratigraphic variations in single grain size parameters. A fluvial sand body environment is deduced.