In both cases, applying wave propagation models facilitated the interpretation of the sedimentary processes responsible for their genesis. The sedimentary structures of the two deposits were compared, together with a genetic scheme for these. Both deposits are formed by beach and ridge and runnel systems. The first location was Gallocanta Lake, a shallow body of water in the Iberian Chain in central Spain and the second was Mazagón Beach, in the Gulf of Cádiz, a mesotidal sandy beach exposed to Atlantic waves and tides. To look more closely at the nature of coastal sediments generated under such specific environments, we selected examples of both shallow lacustrine and open ocean beach deposits.

Climate variability can significantly modify the morphology of the water body, affecting the lake surface area, the available fetch, and the water depth, resulting in possible changes to wave generation and propagation. Lacustrine coasts, especially those associated with shallow highly fluctuating lakes, do not evolve in exactly the same way as marine coasts.

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