Sacred Chaos
G e o l o g y
Centered Menu
Palaeos: Geologic Timescale (Geologic Time)
A really good general overview of the geologic history of Earth

Geologic Time Scale at Geology.Com
This site has a lot of potential.

The Earth

Earth & Sky
PBS: Deep Time
PBS: Savage Earth
Discovery: Planet Earth Guide
Altapedia - Maps of physical geography
U.S. Geological Survey
SI: Geologic Time
SI: Mineral Sciences Photo Galleries