Paul Olsen, Columbia University (IMAGE)

Columbia Climate School

Paul Olsen, Columbia University

Caption

Along sea cliffs in southern England, geologist Paul Olsen of Columbia University's Lamont-Doherty Earth Observatory samples rocks from near the 201,564,000-year Triassic extinction boundary.

Credit

Kevin Krajick/Earth Institute

Usage Restrictions

None

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.