The accumulation of rock debris carried and deposited by a glacier along its margins, at its snout, or beneath its base, building ridges that mark the glacier's former extent. Terminal moraines record a glacier's farthest advance, while lateral and ground moraines record its flanks and retreat.
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1. Moraine - National Geographic Education
Definition sectionQuote, Definition section
A moraine is material left behind by a moving glacier. This material is usually soil and rock.
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