The formation is a relic of an ancient sea that left an extensive, porous, and permeable limestone geologic unit.

[citation needed] In addition to being a petroleum reservoir, as of 2015, the brine from the Smackover Formation is the only source of commercial bromine in the United States.

"[5] In October 2024, federal and state researchers announced the formation may hold five to 19 million tons of lithium, which is about nine times the annual worldwide demand for electric vehicles projected for 2030.

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