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Carbonate deposits
Tuff cascades, like this one in Planches-près-Arbois (Jura), cause carbonate deposits of travertine by dissolving and precipitating hydrospheric carbonates from runoff and ground waters. This process gives rise to spectacular petrifications when it comes to springs or waterfalls. Calcium carbonate is found in the more modest form of a bottom crust all along the bed of these rivers where small terraces or dams can also be created and limit water reservoirs (gours).
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