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:
“... the darkness,
Inviting to this house
Air from a field, air from a salt grave ...”
—Philip Larkin (1922–1986)
“Build thee more stately mansions, O my soul,
As the swift seasons roll!
Leave thy low-vaulted past!
Let each new temple, nobler than the last,
Shut thee from heaven with a dome more vast,
Till thou at length art free,
Leaving thine outgrown shell by life’s unresting sea!”
—Oliver Wendell Holmes, Sr. (1809–1894)