Some coastlines are rising isostatically because the lithosphere was depressed by thick ice sheets during the Pleistocene glaciation that have since melted away.

Question

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Isostatic rebound occurs when land previously depressed by the weight of a glacier rises as the ice melts and the weight is removed. This is a well-documented phenomenon in regions such as Scandinavia and Canada, which were covered by ice sheets during the last glacial period.

Some Coastlines Are Rising Isostatically Because the Lithosphere Was Depressed