underthrust

[uhn-der-thruhst]

noun Geology.

a thrust fault in which the footwall moved and the hanging wall did not (opposed to overthrust).

Nearby words

  1. undertaker,
  2. undertaking,
  3. undertenant,
  4. underthings,
  5. underthroating,
  6. undertime,
  7. undertint,
  8. undertone,
  9. undertook,
  10. undertow

Origin of underthrust

First recorded in 1890–95; under- + thrust

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for underthrust

underthrust

noun

geology a reverse fault in which the rocks on the lower surface of a fault plane have moved under the relatively static rocks on the upper surfaceCompare overthrust
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