Mississippian limestone

Mississippian limestone is a type of sedimentary rock that formed during the Mississippian period, roughly 359 to 323 million years ago. This limestone is primarily composed of calcium carbonate, derived from the remains of marine organisms like corals and mollusks. It is commonly found in regions of the United States, particularly the Midwest and Southeastern states. Geologically, it is significant for its fossil content and is often used in construction and agriculture. The rock also serves as an important indicator of the ancient environments where it was deposited, providing insights into Earth's history.