Thanks for that... Wouldn't know otherwise. Our salt comes from Redmond Utah. 😊
Ours used to come from below our feet. (Prairie Evaporite) The salt company that solution mined it had a problem, though. the cavern was getting large, so they drilled a bunch of holes looking for a suitable location to set up solution mining anew, and doggone it, they kept finding oil. While the plant was being remediated (asbestos removal), someone knuckleheads set it on fire...and that was that. Between the Charles Formation and the Prairie Evaporite here, there's some 600+ feet of salt, and those are just the major beds.
So, yes, I believe in climate change, but that stuff was laid down long before people were knocking around these parts. The Michigan Basin is full of it, too, and there's always Utah's Great salt lake and the associated salt flats (took a nap there many moons ago, just pulled over and crashed in the van).