With natural soil materials, the effect can be significant, as anyone who has lifted a large rock out of a lake can attest.

Till is the rock of soil material transported or deposited by glacial ice.

Due to the lack of soil material, only weak, straggly, very open spruce woods thrive here.

Direct push rigs typically are limited to drilling in unconsolidated soil materials and very soft rock.

The important observation is the demonstrated protective effect of soil materials.

Biochar is a desirable soil material in many locations due to its ability to attract and retain water.

These can include but are not limited to "quarry sand, naturally occurring sediments or soil materials".

When you tested the water, didn't you say that the organisms and the soil material in it came from deeper down?

The underlying soil material has been laid down by rivers and the sea margin.

Peat is environmentally controversial and disputed domestic soil material.