Current-generated linguoid ripples, Kennetcook River, Nova Scotia, Canada
Straight-crested current ripples, Cambrian sandstone, Moraine Lake, Alberta
Cross-lamination produced by current ripples, Quaternary fluvioglacial sands, Lothian, Scotland. The cross-lamination here includes both 'normal' (non-climbing) cross-sets and climbing-ripple cross-lamination.
Lunate (crescent-shaped) dunes in sand and gravel, Kennetcook River.
Straight-crested dunes, also known as sand waves. Kennetcook River estuary, Nova Scotia
Tough cross-bed, characteristic of deposition in lunate dunes. Wolfville Formation (Triassic), Nova Scotia
Tabular cross-beds, Goldenville Formation, Guysboro County NS.
Tabular cross-bedding produced by eolian dunes, Wolfville Formation, Red Head NS (Photo © David R. Brown)
Antidunes beneath fast-flowing stream, Kennetcook River. Flow is from left to right, but antidunes were visibly migrating slowly from right to left.