Definition of boulder clay in English:
Another term for till4.
- It's a deep, steep-sided ravine formed in Magnesian Limestone and boulder clay.
- Erosion at Filey Bay is due to the sea and the rain attacking the cliffs, which are made of boulder clay - a mixture of sand, stones, and soil - which becomes soft when wet.
- A rough stone capping has already been laid on the underlying boulder clay on a 1.5 kilometre section.
Definition of boulder clay in:
- British & World English dictionary
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