Indiana Geology Glossary - Search Results

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basal outwash: Sand and gravel that were deposited as outwash in front of an advancing glacier and subsequently overridden by the ice and buried by other kinds of deposits. Basal outwash commonly forms the base of glacial depositional sequences.; See: outwash
outwash: Sediment deposited by meltwater out in front of an ice margin. Usually composed of sand and(or) gravel.
outwash fans: A fan-shaped accumulation of mostly sand and gravel deposited by glacial meltwater streams, and typically radiating from one or more distinct apexes along a moraine or other ice marginal position.
outwash train: Body of outwash sand and gravel in linear form that typically extends along a major river valley that drained one or more former ice margins.; See: outwash
outwash valleys: A valley underlain by glacial outwash. May be oriented parallel or perpendicular to a former ice margin, and may or may not be occupied by a modern stream.