Diamictite

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Diamictites (IPA: /ˌdʌɪəˈmɪktʌɪt/) are non-sorted conglomerates with a wide range of clasts with up to 25% gravel sized (greater than 2 mm). They are composed of coarse, poorly sorted, angular to well rounded sedimentary clastic fragments supported by a typically argillaceous (clay sized) matrix.

Diamictites are usually interpreted as having a glacial or ice sheet origin. The deposits are interpreted as originating as either unsorted end moraine glacial till or ice rafted sediments carried into marine environments and deposited by rapidly disintegrating ice sheets.

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