Missouri Geological Map

• Source - [1]
• Paleozoic Erathem - [2]
• Lithostratiogaphy - study of rock layers - [3]
• Geologic time scale - 4+ billion years for earth - [4]. First life at 4B. About 500M years ago - Cambrian Explosion.
• Kansas City Group - Kansas City formation Iola limestone, Chanute shale, Drum limestone, Cherryvale shale, Winterset limestone, Galesburg shale, Bethany, Falls limestone, Ladore shale, Hertha limestone [5]
• Erathem - a deposit of rock over a time - [6]
• Eonothem - rock deposit during an eon [7]
• Eon - billion-year scale, largest geological timescale- [8]
• Era - starting in Palezoic era with emergence of life on land - million-year timescale of recent geological history - [9]