Giants Causeway (IMAGE) University of Southampton Caption Giant’s Causeway, Northern Ireland.: Basalt rock exposures of North Atlantic volcanism during the time of the PETM Credit Tali Babila, University of Southampton Usage Restrictions No restrictions. License CC0 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.