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overthrust

[ oh-ver-thruhst ]

noun

, Geology.
  1. a thrust fault with a low dip and a large slip.
  2. a thrust fault in which the hanging wall was the one that moved ( underthrust ).


overthrust

/ ˈəʊvəˌθrʌst /

noun

  1. geology a reverse fault in which the rocks on the upper surface of a fault plane have moved over the rocks on the lower surface Compare underthrust
“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


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Word History and Origins

Origin of overthrust1

First recorded in 1880–85; over- + thrust
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Example Sentences

They call the eastern edge of this range the Lewis overthrust, because thats where the overlapping stopped.

This cliff under usit must be three thousand feet down to the shale slidewas the front edge of the overthrust.

Of course I am here taking the record just as I find it, as I have already discussed this matter of "overthrust folds."

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overthrowoverthrust belt