Nearby Words

underthrust

[uhn-der-thruhst]

un·der·thrust

[uhn-der-thruhst]
noun Geology.
a thrust fault in which the footwall moved and the hanging wall did not (opposed to overthrust).

Origin:
1890–95; under- + thrust
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Underthrust is always a great word to know.
So is permeability. Does it mean:
central portion of the earth believed to be composed mainly of iron and nickel in a molten state
capability of a porous rock or sediment to permit the flow of fluids through its pore spaces
Collins
World English Dictionary
underthrust (ˈʌndəˌθrʌst)
 
n
geology Compare overthrust 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 surface

Collins English Dictionary - Complete & Unabridged 10th Edition
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