Geology. A name for certain mixed glacial or other deposits resting upon older formations.

a deposit of glacial outwash along a valley bottom.

A broad, flat or gently sloping, sheet of glacial outwash.

a surface or deposit that was originally formed in contact with a body of ice; usually attributive, esp. in ice-contact slope.

A postglacial deposit; (with the and capital initial) the postglacial period.

boulders deposited by the melting of a glacier.