11. The caprock lies under the surface at the crest of the salt dome . 12. The Boling salt dome is a major geological feature in the Boling-Iago area. 13. The depression is also noted for salt domes , particularly Volgograd salt. 14. Germany, Spain, the Netherlands, Romania and Iran also have salt domes . 15. The salt dome Gorleben, a deep geological repository is proposed. 16. Salt domes contain anhydrite, gypsum, and native sulfur, in addition to halite and sylvite.17. The Strategic Petroleum Reserve consists of crude oil stored in salt domes in Louisiana. 18. The reserve has 670 million barrels stored in salt domes on the Louisiana-Texas coast. 19. Two nearby caverns carved out of the same salt dome did not catch fire. 20. The hill is pushed up about 1 mm per year by a salt dome .
