fracture zone

fracture zone WORD ORIGIN noun Oceanography. a long, narrow rift on the ocean floor, separating areas of differing depth: where such a zone crosses a mid-ocean ridge, it displaces the ridge by faulting. Liberaldictionary.com

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Compare transform fault. Origin of fracture zone First recorded in 1960–65 Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019