Diamicton

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In geology, diamicton (also diamict) is a massive, very poorly sorted sediment. Large sedimentary grains gravel size and larger (>= 2 mm) are set in a matrix of fine grains. In a diamicton deposit, the fine grains support the large grains, so diamicton is said to be "matrix-supported."

The term diamicton is a generic term and does not denote an origin for the deposit. A common origin for diamicton is by glacial activity. Sediment deposited by glaciers in moraines is charateristically very poorly sorted, showing great lateral and vertical variations in thickness, composition and texture. Once a glacial origin for a diamicton has been determined, it can be called drift or till. The source of diamicton could also be from a landslide. lithified diamicton is refered to a diamictite.

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