Tektites (IMAGE) University of California - Berkeley Caption Tektites, 1 millimeter spheres of glass, recovered from the Tanis fossil bed. They were produced by the Chicxulub impact and fell within an hour of the impact. Credit Photo courtesy of Robert DePalma 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.