upthrow

American  

[uhp-throh, uhp-throh] / ˈʌpˌθroʊ, ʌpˈθroʊ /

noun

1. an upheaval, as of the earth's surface.

2. Geology. an upward displacement of rock on one side of a fault.

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verb (used with object)

upthrew, upthrown, upthrowing

1. to throw or cast up or upward.

upthrow British  

/ ˈʌpˌθrəʊ /

noun

1. geology the upward movement of rocks on one side of a fault plane relative to rocks on the other side

2. rare an upward thrust or throw; upheaval

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Etymology

Origin of upthrow

First recorded in 1590–1600; up- + throw

Example Sentences

See Examples For:

upthrow upthrew upthrowing upthrown

The upthrow is uniformly on the eastern side of the fault.

From A Study of Recent Earthquakes by Davison, Charles

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 Davison, Charles

Thrust faults hade to the upthrow; the hanging wall has gone up.

From The Elements of Geology by Norton, William Harmon

In Figure 184 the right side has gone down relatively to the left; the right is the side of the downthrow, while the left is the side of the upthrow.

From The Elements of Geology by Norton, William Harmon

There has also been a certain amount of upthrow owing to the hydrostatic pressure.

From The Birth-Time of the World and Other Scientific Essays by Joly, John

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 Melville, Herman

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 Lathrop, George Parsons

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

The scanty growth paused abruptly half-way down the gulf, and the rock below was perpetually damp from the upthrown spray.

From For the Term of His Natural Life by Clarke, Marcus Andrew Hislop

"Didn't give away any reason for asking, I hope, Miss Duggan?" put in Cleek at this juncture, with an arching of the brows and a keen look into her upthrown face.

From The Riddle of the Spinning Wheel by Hanshew, Mary E.

To the left was the seemingly endless ice-field that looked like the angry billows of a storm-tossed sea which had been arrested at the height of tempest, its white-capped, upthrown waves paralyzed cold and dead.

From Polaris of the Snows by Stilson, Charles B.

Where there were no upthrown mounds of gravel, great holes and trenches yawned, and chasms where the thick rime of the earth had been peeled to bed-rock.

From Children of the Frost by London, Jack

Related Words

• altitude
• ascent
• mountain