Definition of Glacial till
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Glacial till Definition from Science & Technology Dictionaries & Glossaries
Unstratified (not layered) drift deposited directly by the ice. Consists of a mixture of clays, sands and gravels often with large boulders mixed together in any proportion
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Glacial till Definition from Encyclopedia Dictionaries & Glossaries
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Glacial till Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
Till is the mixture of rocks, boulders, and soil picked up by a moving glacier and carried along the path of the ice advance. The glacier deposits this till along its path: on the sides of the ice sheet, at the toe of the glacier when it recedes, and across valley floors when the ice sheet melts. These till deposits are akin to the footprint of a glacier and are used to track the movement of glaciers. These till deposits can be good sources of ground water, if they do not contain significant amounts of impermeable clays. Also see Moraines, Lateral Moraines, and Terminal Moraines.