Join Donate

The Bruce Murray Space Image Library

Geologic time scales for Mercury, Moon, Mars, Venus, and Earth

Geologic time scales for Mercury, Moon, Mars, Venus, and Earth

Jean-Pierre williams

Geologic time scales for Mercury, Moon, Mars, Venus, and Earth
The geologic histories of terrestrial planets are divided into time periods based on key events in each planet's history. For all but Earth, the time period boundaries are based on major impact or volcanic events. They are tied to specific chronological years based on crater counting, but for places other than Earth and the Moon, there is a lot of uncertainty about absolute ages of each geologic era.

Explore related images: scale comparisons, Mercury, Venus, Earth, the Moon, Mars

Comments & Sharing
More Images
astronaut on Phobos
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

Bruce Murray and Carl Sagan
Pretty Pictures

Support the Bruce Murray Space Image Library and help us share the wonders of other worlds.

Donate

"We're changing the world. Are you in?"
- CEO Bill Nye

I'm In!