The Ste. Genevieve Limestone is a

geologic formation A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...

named for

Ste. Genevieve, Missouri Ste. Genevieve (french: Sainte-Geneviève ) is a city in Ste. Genevieve Township and is the county seat of Ste. Genevieve County, Missouri, United States. The population was 4,999 at the 2020 census. Founded in 1735 by French Canadian coloni ...

where it is exposed and was first described. It is a thick-bedded

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

that overlies the

St. Louis Limestone The St. Louis Limestone is a large geologic formation covering a wide area of the midwest of the United States. It is named after an exposure at St. Louis, Missouri. It consists of sedimentary limestone with scattered chert beds, including the ...

. Both are Mississippian in age. The St. Louis Limestone is

Meramecian The Meramecian or Maramec stage is a sequence of Mississippian rocks in the Mississippi River Valley. It is named for the Meramec River in Missouri. Members Included are the St. Louis Limestone, Ste. Genevieve Limestone, Salem Limestone, and t ...

and the Ste. Genevieve is the base of the

Chesterian The Mississippian ( , also known as Lower Carboniferous or Early Carboniferous) is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earlier of two subperiods of the Carboniferous period lasting from roughly ...

series. It is a primary producer in the

Illinois Basin The Illinois Basin is a Paleozoic depositional and structural basin in the United States, centered in and underlying most of the state of Illinois, and extending into southwestern Indiana and western Kentucky. The basin is elongate, extending app ...

and has produced commercial oil and gas in

Warren County, Kentucky Warren County is a county located in the south central portion of the U.S. state of Kentucky. As of the 2020 census, the population was 134,554, making it the fifth-most populous county in Kentucky. The county seat is Bowling Green. Warren Coun ...

References

Mississippian Missouri Limestone formations of the United States Mississippian Illinois Carboniferous geology of Virginia Carboniferous southern paleotropical deposits {{Missouri-geologic-formation-stub

See also

References