boulder clay


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boulder clay:

see driftdrift,
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

[′bōl·dər ‚klā]
(geology)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

boulder clay

an unstratified glacial deposit consisting of fine clay, boulders, and pebbles
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Sample Color Structure Kernstone Grayish- Boulder-containing white coarse-grain structures Sample The identification under microscope Kernstone The mineral compositions included boulder clay, single-crystal quartz, metaquartzite, and flint Table 2: Comparison of two different mineral crystals.
The boulder clay is overlain by unconsolidated grey clay, generally overlain by a thinner, yellow clay, which thins to the southwest.
Det Con Orr said that reports by the Humber Archeological Partnership and the Geography Department at Hull university suggested the relic "could not physically have been incorporated in the boulder clay at Aldbrough".
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.
the tillite might well have been boulder clay by the shore of a Canadian river....

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