A salt dome is a type of structural dome formed when a thick bed of evaporite minerals (mainly salt, or halite) found at depth intrudes vertically into surrounding rock strata, forming a diapir. It is important in petroleum geology because salt structures are impermeable and can lead to the formation of a stratigraphic trap.
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Famous quotes containing the words salt and/or dome:
“When the salt sheet broke in a storm of singing
The voices of all the drowned swam on the wind.”
—Dylan Thomas (1914–1953)
“But in the dome of mighty Mars the red,”
—Geoffrey Chaucer (1340?–1400)