Till - GCSE Geography Definition
Reviewed by: Bridgette Barrett
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In GCSE Geography, the term "till" refers to the mixture of unsorted sediment, like rocks, clay, sand, and silt, that is left behind when a glacier melts. As the glacier moves, it picks up and carries a variety of materials, and when it melts, these materials are deposited on the land. Till is important because it helps us understand past glacial movements, and it shapes the landscape, creating features like drumlins and moraines. It doesn't have layers like some other deposits, because it is dropped all at once when the ice melts.
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