[noun uhp-throh; verb uhp-throh]
- an upheaval, as of the earth's surface.
- Geology. an upward displacement of rock on one side of a fault.
- to throw or cast up or upward.
Origin of upthrow
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for upthrow
The higher side is called the heaved or upthrow side; the opposite side the thrown or downthrow side.The Wonder Book of Volcanoes and Earthquakes
Edwin J. Houston
Thrust faults hade to the upthrow; the hanging wall has gone up.The Elements of Geology
William Harmon Norton
There has also been a certain amount of upthrow owing to the hydrostatic pressure.The Birth-Time of the World and Other Scientific Essays
J. (John) Joly
With dip faults the crop is carried forward (down the dip) on the upthrow side.
- geology the upward movement of rocks on one side of a fault plane relative to rocks on the other side
- rare an upward thrust or throw; upheaval