What is glacier outwash?

Glacial outwash is the debris carried by meltwater streams from under the glacier. During the day, many streamlets enter the side of the glacier and form a glacial stream at its base. A particular form of stream debris laid down under the glacier is called eskers, but most of the debris is carried on top or within the glacier and is deposited as the glacier melts as outwash material. Rocks and gravel and sand and clay. In the field, it is conspicuous for tha ammount of clay contained, and little clean washed material.