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Geologic Time

Horizontales
Super-Eon that includes Hadeon, Archeon, and Proterozoic Eons
Largest divisions of time in the Geologic Time Scale
The first Eon
Rock formation that contains many caves, including Boulder Choke Cave in Sinks Canyon
A system that converts one unit of measure to another
Eon that ended the Precambrian Super-Eon and marks an explosion of diversity of life on the planet
A system for reporting very large and very small numbers in a concise way
Geological or ecological event that affects the entire planet and is the basis for a time change in the Geologic Time Scale
Verticales
Formation that is the bottom layer of sedimentary rock in our area. Records evidence for the Great Oxidation Event
Eon that ended with the Great Oxidation Event
The current eon
Rock formation made of mudstone and claystone, and where the meat eating amphibian fossil is found
Smallest division of time in the GFeologic Timescale