التحليل الحجمي (الميكانيكي)‎ للرواسب الفيضية في بعض أودية الجبل الأخضر : دراسة جيومورفولوجية

الملخص EN

Analysis of flood deposits was the core of this study; few northern wadies in the area were selected to carry out the research in order to determine depositional environments and sedimentation media as well as process that have influenced its characteristics (size, shape and form).

Sediments of different sizes have been segregated using Electrical Sieves and the sizes were measured using phi (0) units.

Data (grain size) was processed in Fraction software for grain analysis, and Folk & Word equations were applied to detect sediments characteristics which including size, composition and texture.

Sahu equation was also used to quantify sedimentation by turbulent currents.

Friedman Curve was implemented on some parameters to reveal depositional factor and sediment origin.

Sediment transportation has been speculated with Grifith Curve.

Principle conclusion of this study indicating that the origin of 9V.62% of the fine sediments is fluvial and the rest 2.38% is of marine origin.

This low percentage of marine sediment may be attributed to marine incursion.

It also showed that traction was the dominant transportation process, as it accounts for 80.96% of the material transported, this dominance ascribed to large size of material or to the weakness of transporting agent.