What subdivisions make up the geologic time scale?

Question

What subdivisions make up the geologic time scale?

Answer 1

The geologic time scale is divided into eons which are themselves divided into eras which are divided into progressively smaller blocks of time. They are divided in the following order:

1. eons

2. eras

3. periods

4. epochs

5. stages

For the names and order of these subdivisions, see wikipedia which has a helpful diagram: http://en.wikipedia.org/wiki/Geologic_ti...

Answer 2

http://www.geosociety.org/science/timesc...

This is on the Geological Society of America website.

I hope it helps!