What is the most likely cause of the deposits of salt, gypsum, and limestone in Oklahoma?

Answer: The main reason why Oklahoma has rich deposits of gypsum, limestone, salt, and other minerals is that it has a complex geology.

The state of Oklahoma is composed of diverse landscapes. Furthermore, Oklahoma's geographic areas have certain characteristics that are good for the formation of these minerals. Aside from gypsum, limestone, and salt, Oklahoma is also a top producer of natural gas, coal, and metal.