After the last ice age, stranded ice blocks left behind by the continental glacier melted and formed

As a continental glacier retreated, blocks of ice could become stranded in the sediment it had deposited. When those blocks melted, they left bowl-shaped depressions that often filled with water; these depressions are called kettles. Cirques, drumlins, and moraines are other glacial landforms, but they are not formed by melting stranded ice blocks.

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