The Mississippian Limestone of northern Oklahoma and southern Kansas is comprised of four basic depositional environments. These are the Mississippi “Chat”, Chester, Meramec and Osage. The top of the Mississippi is a major erosional unconformity across Kansas. As a result, Mississippi production in this area is from an Osage chert section at the top of the Mississippian and from a sand lens in the Mississippi section, which is usually referred to as the Kinderhook sand.
Mississippian rocks produce oil in several hundred fields in Kansas from combination structural-stratigraphic traps in which porous chat and overlying conglomerates change to nonporous chat or limestone in an updip directions.
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