GARY HINCKS / SCIENCE PHOTO LIBRARY GARY HINCKS / SCIENCE PHOTO LIBRARY
Glacial rebound. Computer artwork showing the rebound of the land (lower right) after a glacier it was underneath has retreated. A glacier is formed when snow from high ground flows downhill under its own weight. A glacier retreats when the ice melts faster than the glacier moves forward. Distinctive landscape features are created by the weight of the ice, the meltwater, and the erosion by ice and meltwater.
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