lag gravel
geology
Quick Summary
Lag gravel refers to gravel that remains after finer materials are removed by wind or is rolled along a stream bed more slowly than finer sediment particles. Gravel itself is an aggregate of rounded rock fragments larger than sand, with sizes ranging from pebbles to boulders. These fragments become rounded through abrasion during transport by water. Gravel deposits are found in stream channels or on beaches where water currents are strong. When cemented, gravel forms conglomerates.12
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