Researchers in action (IMAGE) University of California - Riverside Caption Research team leader sprays water on drill cores to see sedimentary rocks and select samples for this study. Credit Andrey Bekker/UCR 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.