upthrow
Americannoun
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an upheaval, as of the earth's surface.
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Geology. an upward displacement of rock on one side of a fault.
verb (used with object)
noun
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geology the upward movement of rocks on one side of a fault plane relative to rocks on the other side
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rare an upward thrust or throw; upheaval
Etymology
Origin of upthrow
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
The pool is simply due to the reversal of the natural slope of the river-bed, caused by the formation of a roll or undulation in the ground on the upthrow side of the fault.
From A Study of Recent Earthquakes by Charles Davison
For the next half-mile, the river keeps to the upthrow side of the fault, the scarp of which blocks the tributary streams from the west, forming a number of small pools.
From A Study of Recent Earthquakes by Charles Davison
Out, traitor!" cried the girl with a quick, scornful upthrow of the chin, "it is the smile that saves you, Louis, lad.
From Patsy by S. R. (Samuel Rutherford) Crockett
The other side of the semicircle was occupied by the upthrow of a low rise blocking off an horizon at its nearest point but a few hundred yards away.
From The Land of Footprints by Stewart Edward White
Thrust faults hade to the upthrow; the hanging wall has gone up.
From The Elements of Geology by William Harmon Norton
Then, the vast volcano burst; rent the whole mass; upthrew the ancient rocks; which now in divers mountain tops tell tales of what existed ere Mardi was completely fashioned.
From Mardi: and A Voyage Thither, Vol. II by Herman Melville
Then, quick The sash upthrowing, she made as if to speak Harshly; but still he held his quiet eyes Upon her.
From Rose and Roof-Tree — Poems by George Parsons Lathrop
This a modern example of a Gilbert-type delta, which is a delta composed primarily of coarse material actively eroded from the mountainous upthrown block to the north.
From Textbooks ● Jan. 1, 2017
A fault of recent date may be marked at surface by a scarp, because the face of the upthrown block has not yet been worn to the level of the downthrow side.
From The Elements of Geology by William Harmon Norton
Toward these bluffs, winding and twisting in and out among broken and upthrown blocks of ice, ran a slightly traveled trail.
From Smoke Bellew by Jack London
Flora was within half a step of him with her right arm upthrown.
From Kincaid's Battery by Alonzo Kimball
Draw a second diagram showing the same block after denudation has worn it down below the center of the upthrown side.
From The Elements of Geology by William Harmon Norton
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
