One of the mysteries of the English language finally explained.
Clay containing many large stones and boulders, formed by deposition from melting glaciers and ice sheets.
- ‘Similarly, while the current dry conditions are welcome, if they are prolonged, the mainly boulder clay deposits which are currently exposed due to movement could crack open, leaving them more vulnerable to further wet weather.’
- ‘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.’
- ‘Thousands of tons of boulder clay crashed off the cliffs near Whitby's ancient Abbey - just four days after a previous landslide.’
- ‘But the residents say development will come within 70 ft of the edge of the boulder clay cliff.’
- ‘More than one million tonnes of earth had slipped from the top of the 150 ft cliff to the bottom - due to the effect of the prolonged rain on the soft boulder clay.’
- ‘In the course of his report Mr W Hough said that during the month 15 tons of boulder clay had been removed.’
- ‘He informs me that the ground below Dublin consists predominantly of boulder clay.’
- ‘The geology of the area is largely Jurassic and the boulder clay contains a wealth of ancient marine life.’
- ‘In the area in question the upper part of the cliff consisted of a blanket of what was variously described as boulder clay or glacial till, deposited in geologically recent times during and at the end of a period of glaciation.’
- ‘A rough stone capping has already been laid on the underlying boulder clay on a 1.5 kilometre section.’
- ‘In the Lagan Valley the boulder clay is often covered by later glacial deposits.’
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