FIDS: polygonal structures & mud ripples

3D Model

Flow-induced Interfacial Deformation Structures (FIDS): polygonal structures on mud ripples, generated by flow-induced interfacial deformation.

Mud ripples with deeply indented polygonal structures, with furrow-like structures decreasing in amplitude up the stoss sides, and stoss crests that are planar.

Middle Ordovician Cloridorme Formation, Petite Vallée, Gaspe Peninsula, Quebec, Canada (49.221636,-65.036257)

Yellow scale bar is 5cm long.

Model produced using structure-from-motion from 25 X 20MB images in Agisoft Metashape Professional.

See: Peakall, J. et al. (2024) Flow-induced Interfacial Deformation Structures (FIDS): Implications for the interpretation of palaeocurrents, flow dynamics and substrate rheology, Sedimentology, 71, doi: 10.1111/sed.13219.