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unconformable

[uhn-kuh n-fawr-muh-buh l]
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adjective
  1. not conformable; not conforming.
  2. Geology. indicating discontinuity of any type in a stratigraphic sequence.
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Origin of unconformable

First recorded in 1585–95; un-1 + conformable
Related formsun·con·form·a·bil·i·ty, nounun·con·form·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for unconformable

Historical Examples

  • Strata are said to be unconformable when they do not lie in regular, parallel sequence.

    Zion National Park

    Various

  • The Magdala group is unconformable to that of Ashangi in some places.

  • Massive conglomerates occur in these series, which are unconformable on the Dalradian rocks of Connemara.

  • These, it will be seen, are horizontal, and lie in what is termed "unconformable stratification" on the more ancient series.

  • Although usually conformable to the oolite, it is sometimes, as in the Jura, unconformable.


British Dictionary definitions for unconformable

unconformable

adjective
  1. not conformable or conforming
  2. (of rock strata) consisting of a series of younger strata that do not succeed the underlying older rocks in age or in parallel position, as a result of a long period of erosion or nondeposition
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Derived Formsunconformability or unconformableness, noununconformably, adverb
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