The geology map of Missouri is presented here with only primary surface bedrock types. On the individual county pages, the maps also display secondary and tertiary bedrock / substrate types.
 | Alluvium |  | Sandstone |
 | Clay |  | Dolomite |
 | Igneous |  | Limestone |
- (MSDIS). 2021. <https://msdis.missouri.edu/> Accessed 1 February 2021.