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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How to use mantle rock in a sentence
This mantle rock is so thick and so irregularly disposed that it has given origin to small hills and ridges.
With these residuary soils of the driftless area, the mantle rock of glaciated tracts is in sharp contrast.
The glaciated and unglaciated areas differ notably in topography, drainage, and mantle rock.