More of Nature’s abstract sand patterns on an Orkney shore. Each tide brings fresh patterns in the sand, and the way the ripples form depends on how fine or coarse the composition of the sediments, the force of the waves hitting the beach, the currents, and the way that the waves are reflected back from the rocks around the shore. So each bay has its characteristic natural patterns in the sand, and here at Waulkmill Bay on Mainland, Orkney, facing Scapa Flow, the grain size was very fine indeed, and the sand very pale, and the ripples very different from any that I have photographed elsewhere.
Jessica's Nature Blog 
Amazing sinosuidal ripples.
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Thank you, Jay. What makes them that kind of ripple? I find it difficult to differentiate the different types.
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These are formed by water action, as the velocity of the flowing water increases it forms straight -sinuous catenary -longuoid -lunate ripples.
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Thank you, Jay. I wonder if you could point out to me any useful references to help me distinguish the different types of sand ripple formations?
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Read sedimentology by gray nicols, and introduction to sedimentology by tucker
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Thank you, Jay..
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