1. a type of heavy clay soil that is sticky when wet and hard when dry
Usage: geological
2. a geological formation of clay and marl from the Lower Cretaceous period
Usage: geological; technical

Examples

• The farmer struggled to plow the gault after the heavy rains.
• Gault becomes extremely sticky and difficult to work when wet.
• The construction crew had to use special equipment to dig through the gault layer.
• Fossils are often found preserved in gault formations.
• The gault soil in this region makes drainage a constant challenge.
• Geologists identified the gault stratum beneath the topsoil.