Structures and fabric sedimentary of overland flow generated in laboratory experiments – fluids composed of low concentrations (≈ 3 vol %) of soil aggregates

The sedimentary arrangement generated by overland flows remains an open question, particularly due to the sediment concentration variations of this flow. We create a laboratory experiment answer question: what type facies and structures can low (≈ 3 vol%) generate in steep-planar hillslope context with gently sloped sand accommodation area? Our revealed that noncanalized sediments are supercritical turbulent. On sedimentation plain, exhibited progressive deceleration implying three flow stages (arrival-flow, intermediate-flow waning-water flow). In first stages, remained turbulent, last stage, they became subcritical Parting lineation was predominant surface feature for followed tool marks, rills coarse aggregate accumulation. recurrence implicated parting reworking, scour-and-fill, horizontal airscape structures. arrival-flow stage developed erosive depression, which were incorporated into These characteristics occur real world related recurrence.