unconformity

[ uhn-kuh n-fawr-mi-tee ]
/ ˌʌn kənˈfɔr mɪ ti /

noun, plural un·con·form·i·ties.

lack of conformity; incongruity; inconsistency.
Geology.
  1. a discontinuity in rock sequence indicating interruption of sedimentation, commonly accompanied by erosion of rocks below the break.
  2. the interface between such strata.

Origin of unconformity

First recorded in 1590–1600; un-1 + conformity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unconformity

British Dictionary definitions for unconformity

unconformity

/ (ˌʌnkənˈfɔːmɪtɪ) /

noun plural -ties

lack of conformity
the contact surface between younger and older rocks representing a discontinuity in the geological record. Most commonly it represents an erosional surface
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for unconformity

unconformity

[ ŭn′kən-fôrmĭ-tē ]

A surface between successive strata representing a missing interval in the geologic record of time, produced either by an interruption in deposition or by the erosion of depositionally continuous strata followed by renewed deposition. An unconformity is a type of discontinuity.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.