It is my belief that the iron deposits of the Central Alabama area around Bessemer and Birmingham are actually the remains of an iron meteorite from before the age of the dinosaurs.
If you look at the mountains around there, they are curved around like the wall of a crater of a meteor that came in from the northeast..........
As much as I like impacts from space (from a safe distance), that sounds like it’s probably volcanic.
https://en.wikipedia.org/wiki/Wetumpka_crater