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salt dome
(redirected from Salt domes)

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salt dome

Largely subsurface geologic structure that consists of a vertical cylinder of salt embedded in horizontal or inclined strata. In the broadest sense, the term includes both the core of salt and the strata that surround and are “domed” by the core. Major accumulations of oil and natural gas are associated with salt domes in the U.S., Mexico, the North Sea, Germany, and Romania; domes along the Gulf Coast contain large quantities of sulfur. Salt domes are also major sources of salt and potash on the Gulf Coast and in Germany, and they have been used for underground storage of liquefied propane gas. Storage “bottles,” made by drilling into the salt and then forming a cavity by subsequent solution, have been considered as sites for disposal of radioactive wastes.


salt dome [′sȯlt ‚dōm]
(geology)
A diapiric or piercement structure in which there is a central, equidimensional salt plug.


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The reserve is a series of four artificial caverns carved out of salt domes along the Gulf of Mexico.
According to Hill, the images help to confirm an earlier theory that growing salt domes block old seafloor canyons, trapping organic sediments and creating basins that either generate or cap oil and gas reservoirs.
According to a spokesperson for Duke Energy, the storage caverns at Moss Bluff are salt domes and contain no toxins that could be released into the atmosphere.
 
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