The soil in the valley floor is loam over clay.

Brooks was said to prefer butter over clay as a molding medium.

In the western portion of the prairie, the soil is a brown loess loam over calcareous clay.

They squished over wet clay and torn grass, out of the light and back into the gloom.

The rampart was made from turf laid over sand, clay, rubble, and layers of logs.

There was hardly any sand, just a scattering of blackened stones over baked clay.

Balderton airfield started life in the spring of 1941 with a grass surface over stiff clay.

The agriculture soils tend to be thin, with no more than a foot of loam over soft clay.

On top of this is a combination of slowly-permeable and well drained fine loam over clay.

The spotted sucker inhabits deep pools of small to medium rivers over clay, sand or gravel.