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[oh-ver-thruhst] /ˈoʊ vərˌθrʌst/
noun, Geology.
a thrust fault with a low dip and a large slip.
a thrust fault in which the hanging wall was the one that moved (opposed to underthrust).
Origin of overthrust
First recorded in 1880-85; over- + thrust Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for overthrust
Historical Examples
  • Of course I am here taking the record just as I find it, as I have already discussed this matter of "overthrust folds."

    Illogical Geology George McCready Price
  • This cliff under usit must be three thousand feet down to the shale slidewas the front edge of the overthrust.

    Boy Scouts in Glacier Park Walter Prichard Eaton
British Dictionary definitions for overthrust


(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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