Geologic Time Scale | Definition, History & Diagram

Explore This Prehistoric Time Line and Geologic Time Scale

Geologic Time Scale

Hands-On Learning Geological Timescale Model

Geologic Time Scale ( Read ) | Earth Science

A fascinating challenge to the established view of Earth's history is presented here! The logic is sharp: if every speck of dirt shares the same fundamental age, what's the real story behind layers supposedly being younger? The comparison to shuffling a deck of cards to explain younger layers landing on top is a powerful analogy that forces a re-think on the very concept of the geologic column. Furthermore, the insight into how layers are dated—often by the dinosaur fossils they contain, automat

Watch Earth's History Play Out On A Football Field