mantle rock
noun Physical Geography.
the layer of disintegrated and decomposed rock fragments, including soil, just above the solid rock of the earth's crust; regolith.
Origin of mantle rock
First recorded in 1890–95
Words nearby mantle rock
mantispid,
mantissa,
mantle,
mantle plume,
mantle radiotherapy,
mantle rock,
mantlepiece,
mantlet,
mantletree,
mantling,
mantoux test