Water formed by the melting of snow and ice, especially from a glacier.
- Huge glaciers and meltwater carved out the deep trough of the glen some 20,000 years ago.
- Large quantities of glacier meltwater deposited various kinds of material, the most important of which is called outwash (advance or recessional), consisting mostly of sands and gravels.
- Although ice masses in those areas make up only 30 percent of the world's glaciers, they contribute 70 percent of the total glacial meltwater.
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