boulder clay

noun Geology.
a glacial deposit consisting chiefly of unstratified clay with embedded boulders.

Origin:
1855–60

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To boulder clay
Collins
World English Dictionary
boulder clay
 
n
See also till an unstratified glacial deposit consisting of fine clay, boulders, and pebbles

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
00:10
Boulder clay is always a great word to know.
So is callithumpian. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
Example sentences
The tills have variable texture, from clay through silt and sandy clay to boulder clay, and have generally low permeability.
Glacial till varies in consistency from sandy, silty clay to gravel and boulder clay.
Image for boulder clay
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT