Zeolites (IMAGE) Northwestern University Caption Researchers collected samples from the Berufjörður-Breiðdalur region in eastern Iceland, where glacial erosion has carved deep valleys and fjords into basalt rock to reveal buried zeolites. Credit Claire Nelson/Northwestern University Usage Restrictions Credit Claire Nelson License Original 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.