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

Dikes and faults are denominated upthrow or downthrow, according to the position they are met with in working the mine.

From Project Gutenberg

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

From Project Gutenberg

With dip faults the crop is carried forward (down the dip) on the upthrow side.

From Project Gutenberg

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

From Project Gutenberg

The higher side is called the heaved or upthrow side; the opposite side the thrown or downthrow side.

From Project Gutenberg

Related Words

• altitude
• ascent
• mountain