reg·o·lith (r g  -l th )n. The layer of loose rock resting on bedrock, constituting the surface of most land. Also called mantle rock. [Greek rh  gos, blanket + -lith.] |
| regolith (rg-lth) The layer of rock and mineral fragments that rests on bedrock and is produced by the weathering of rocks. Regolith constitutes the surface of most land. |
regolith
the layer of disintegrated and decomposed rock fragments, including soil, lying above the solid rock of the earth’s crust. Also called mantle rock.
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