mantle rock

American  

noun

Physical Geography.

1. the layer of disintegrated and decomposed rock fragments, including soil, just above the solid rock of the earth's crust; regolith.

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Etymology

Origin of mantle rock

First recorded in 1890–95

Example Sentences

See Examples For:

mantle rock

Refertilization occurs when magma restores chemical components to mantle rock that previously lost them during partial melting.

From Science Daily ● Jul. 18, 2026

They propose that magma from a thermal-chemical plume rose through the plate, created the dike swarms, and then reacted with the surrounding mantle rock.

From Science Daily ● Jul. 18, 2026

The plates are a layered combination of buoyant crust and more dense upper mantle rock.

From Science Magazine ● Jan. 9, 2024

Instead, differences in the type of mantle rock make it melt at different temperatures.

From Scientific American ● Dec. 1, 2022

I never tire of contemplating the soil itself, the mantle rock, as the geologist calls it.

From Time and Change by Burroughs, John