boulder clay


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  • noun

Synonyms for boulder clay

unstratified soil deposited by a glacier

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References in periodicals archive ?
No material was brought in at all, the technique simply rearranged naturally occurring soils so the top one became the well-drained, hard-wearing, boulder clay.
Findings revealed that the cliff on which the fort and settlement of Birdoswald stand is under constant threat of erosion, caused by a combination of the river at the base of the cliff and water and frost action on the boulder clay at the top.
Ploughing to such an unusual depth has turned over the turf and top soil bringing the underlying boulder clay to the surface," he explained.
An official report revealed yesterday that the 91ft vessel's nets had caught on a huge pile of boulder clay left over from burying a North Sea oil and gas line.
These logs revealed a stratigraphy consisting of bedrock, commonly overlain by indurated till and unconsolidated boulder clay, overlain by grey and yellow clay and capped by a thin black loam.
A ramp, made out of the same boulder clay and gravel as the cliffs, has been built to replace steps which crumbled away.
Recently completed geochemical sampling has identified anomalous domains consisting of boulder clay alteration and trace element anomalies including chlorite, illite, dravite, lead, arsenic and yttrium.
From an excavation depth of approximately 5 to 6 m, a reduction / relaxation of the located under the boulder clay 2.
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