upthrow

[ noun uhp-throh; verb uhp-throh ]

noun

1. an upheaval, as of the earth's surface.
2. Geology. an upward displacement of rock on one side of a fault.

verb (used with object)

, up·threw, up·thrown, up·throw·ing.

1. to throw or cast up or upward.

upthrow

/ 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

Word History and Origins

Origin of upthrow¹

First recorded in 1590–1600; up- + throw

Example Sentences

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 Project Gutenberg

Out, traitor!" cried the girl with a quick, scornful upthrow of the chin, "it is the smile that saves you, Louis, lad.

From Project Gutenberg

Thou shouldst have lived to feel below Thy feet Disunion's fierce upthrow,— The late-sprung mine that underlaid Thy sad concessions vainly made.

From Project Gutenberg

A series of great dislocations with upthrows on the east side traverse eastern North America from Canada to Alabama.

From Project Gutenberg

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

From Project Gutenberg

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