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boulder clay

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boulder clay: see drift drift, deposit of mixed clay, gravel, sand, and boulders transported and laid down by glaciers. Stratified, or glaciofluvial, drift is carried by waters flowing from the melting ice of a glacier.
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boulder clay
an unstratified glacial deposit consisting of fine clay, boulders, and pebbles
boulder clay [′bōl·dər ‚klā]
(geology)
till
till, glacial till, boulder clay
An unstratified glacial deposit which consists of pockets of clay, gravel, sand, silt, and boulders; has not been subject to the sorting action of water; usually has good load-sustaining properties.
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Investigative work has revealed that erosion is being 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.
Digging for information; Cemetery will be excavated before time runs ... by The Journal (Newcastle, England)
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.
First systematic excavation of England's ancient Hadrian Wall underway by Asian News International
1893, Height of the Bay of Fundy coast in the Glacial period relative to sea-level, as evidenced by marine fossils in the boulder clay at St.
Robert J. Chalmers: pioneer surficial geologist by Brookes, Ian A. / Geoscience Canada
 
 
 
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