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fault block

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noun Geology.

a mass of rock bounded on at least two opposite sides by faults.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
Compare block faulting.

Origin of fault block

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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