Sedimentary structures : megaripples

Classification

Present day dunes with straight crest line (2D) – Arcachon bay

Present day dunes with straight crest line (2D) – Arcachon bay

Present day dunes with sinuous crest line (3D) – and current ripples Arcachon bay

Present day dunes with sinous crest line (3D) – Somme bay

Present day dunes with sinous crest line (3D) – Somme bay

Dunes-2D tangential cross bedding (cretaceous, Spain)

Dunes-2D tangential cross bedding (Jurassic, Jura)

Dunes-2D tangential cross bedding (Jurassic, Burgundy)

Dunes-2D tangential cross bedding (cretaceous, Spain)

Dunes-3D trough cross bedding (cretaceous, Spain)

Dunes-3D trouth cross bedding -Tidal environment (Ordovician, morocco)

Dunes-3D trough cross bedding -Tidal environment (Ordovician, morocco)

Dunes-3D trough cross bedding -Tidal environment (cretaceous, morocco)