: Paleoclimatología: lacustrine terrace

geomorphological structure > lacustrine terrace

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lacustrine terrace

A lake (lacustrine) terrace represents the former shoreline of either a nonglacial, glacial, or proglacial lake. As with marine terraces, a lake terrace can be formed by either the abrasion or erosion of materials comprising the shoreline, the accumulations of sediments in the shallow-water to slightly emerged environments, or some combination of these. Given the smaller size of lakes relative to the size of typical marine water bodies, lake terraces are overall significantly narrower and less well developed than marine terraces. However, not all lake terraces are relict shorelines. In case of the lake terraces of ancient ice-walled lakes, some proglacial lakes, and alluvium-dammed (slackwater) lakes, they often represent the relict bottom of these lakes. Finally, glaciolacustrine kame terraces are either the relict deltas or bottoms of ancient ice marginal lakes. (Adapted from: https://en.wikipedia.org/wiki/Terrace_(geology))

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