upthrow

[uhp-throh, 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)

upthrew, upthrown, upthrowing. 

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.

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

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

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

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

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Related Words

• altitude 
• ascent 
• mountain