un·der·thrust
| \ ˌən-dər-ˈthrəst
\
\
underthrust; underthrusting
Definition of underthrust
: to insert (a faulted rock mass) into position under a passive rock mass
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“Underthrust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underthrust. Accessed 7 Mar. 2021.
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Time Traveler for underthrust
The first known use of underthrust was in 1893
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