Ancient Sediment (IMAGE)

Columbia Climate School

Ancient Sediment

Caption

Chris Lepre of Columbia University's Lamont-Doherty Earth Observatory (back to camera) precisely dated the artifacts by analyzing layers above, around and below them for reversals in earth's magnetic field.

Credit

West Turkana Archaeological Project

Usage Restrictions

Credit must be given.

License

Licensed content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.