BSRG Photo Archive

Dune cross stratified sandstones overlain by wind rippled dune top deposits.

Dune cross stratified sandstones overlain by wind rippled dune top deposits. In this case these are preserved because the dunes are covered in lava. They would normally have been reworked by the next dune in the bedform train. Cretaceous of Namibia.

photo by John Howell