The layer of unconsolidated rocky material covering bedrock.
- The surface of the Moon is covered by a soil layer called regolith, which has been produced by meteorite impact.
- Alteration of the bedrock produces a regolith, the base of which is known as the weathering front.
- The Moon's crust is composed of a material known as regolith.
Late 19th century: from Greek rhēgos 'rug, blanket' + -lith.
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