salt dome
noun Geology.
a domelike rock structure that is formed beneath the earth's surface by the upward movement of a mass of salt, may reach thousands of feet in vertical extent, and is more or less circular in plan: often associated with oil and gas pools.
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Nearby words
- salt bath,
- salt cake,
- salt cedar,
- salt chuck,
- salt cod,
- salt flat,
- salt gland,
- salt glaze,
- salt grass,
- salt hay
Compare diapir.
Origin of salt dome
First recorded in 1905–10
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
salt dome
salt plug
noun
a domelike structure of stratified rocks containing a central core of salt: formed by the upward movement of a salt deposit
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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