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Lacking definite layers: unstratified rock.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Geological Science) (esp of igneous rocks and rock formations) not occurring in distinct layers or strata; not stratified
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Adj.||1.||unstratified - not deposited in layers; "glacial till is unstratified"|
geology - a science that deals with the history of the earth as recorded in rocks
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