overthrust

[oh-ver-thruhst]

o·ver·thrust

[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 (opposed to underthrust).

Origin:
1880–85; over- + thrust
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Overthrust is always a great word to know.
So is leaching. Does it mean:
process where the surface of the earth is worn away by the action of water, glaciers, winds, waves
to dissolve out soluble constituents from ashes and soil by percolation
Collins
World English Dictionary
overthrust (ˈəʊvəˌθrʌst)
 
n
geology Compare underthrust a reverse fault in which the rocks on the upper surface of a fault plane have moved over the rocks on the lower surface

Collins English Dictionary - Complete & Unabridged 10th Edition
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