The muds or clays form heavy sticky soils which are richer in chemicals.

The clay does not form itself into a sculpture.

Soils are predominantly alluvial - some clay has formed as a result of the periodic inundations.

But the clay forms absorbed acid and fire.

This type of environment would support life, and clay can form well-preserved fossils.

The remaining clay and sand mixture forms a white milky liquid called slurry.

The soft loess clay had formed over thousands of years due to wind blowing silt into the area from the Gobi Desert.

When Martinez is ready to begin molding the clay to form a pot, the right amount of clay is brought into the house.

"How do clays and carbonates form in frozen comets where there isn't liquid water?"

The clay in the soil formed a natural liner.