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USGS CMG InfoBank: Till

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Comment: 10:56 - 11:39 (00:43)
Source: Annenberg/CPB Resources - Earth Revealed 23. Glaciers
Keywords: glacier, "glacial ice", "glacial melt", till, erosion, deposition, "end moraine", "lateral moraine", "medial moraine", snout

Our transcription: At the edges of the glacier, eroded material is dumped out by the melting ice.
This unsorted rock debris is known as "till."
If the snout of the glacier remains in about the same position for a long time, a very great mound of till called an "end moraine" may form.
Moraines can also accumulate at other places next to glaciers.
"Lateral moraines," for example, grow where till is deposited along the sides of glaciers.
Where two glaciers combine, lateral moraines merge forming "medial moraines."

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