Gasconade Formation

{{Short description|Geologic formation in Missouri, United States}}

{{Infobox rockunit

| name = Gasconade Formation

| image = Conodonts00.jpg

| caption = Conodonts from the Gasconade Formation

| type = Formation

| age = Ordovician

| period = Ordovician

| prilithology = Dolomite

| otherlithology = Sandstone

| namedfor =

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| region = Missouri

| country = United States

| coordinates = {{coord|38.2|N|91.1|W|display=inline,title}}

| unitof =

| subunits = Basal Gunter Sandstone member

| underlies = Roubidoux Formation

| overlies = Eminence Formation Cambrian (unconformable)[http://www.dnr.mo.gov/geology/geosrv/ogc/docs/RI-073.pdf Thompson, Thomas L., 2001, Lexicon of Stratigraphic Nomenclature in Missouri, Missouri Department of Natural Resources, Division of Geology and Land Survey, Report of Investigation Number 73, p 112]

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}}

The Gasconade Formation is a geologic formation in the Ozarks of Missouri. It preserves fossils dating back to the Ordovician Period.