NOUN
- unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together
How To Use boulder clay In A Sentence
- Where it was melting a huge pile of boulder clay was built up, as a terminal moraine.
- As a result the solid rocks are covered by various mixtures of loose clays, sands and boulders - called boulder clay.
- But most of the surface is covered by a thin sheet of boulder clay.
- British Geological Survey maps indicate that the geology of the area is generally glacial till (boulder clay) with underlying coal measures.
- Boulder clay, the most widespread deposit, represents the ground moraine of the ice sheet.
- Greensand, coal, rock salt, coral limestone, oolites, and boulder clays are examples of indicators of depositional environments.
- As a result the solid rocks are covered by various mixtures of loose clays, sands and boulders - called boulder clay.
- When the ice melted some shallow lakes remained where boulder clay blocked old river courses.
- In the last one million years the ice sheets spread a layer of boulder clay across the lowlands.
- In the last one million years the ice sheets spread a layer of boulder clay across the lowlands.
