Studying Ancient Ocean Crust (IMAGE) Iowa State University Caption Benjamin Johnson of Iowa State University woks at an outcrop in remote Western Australia where geologists are studying 3.2-billion-year-old ocean crust. Credit Photo by Jana Meixnerova/provided by Benjamin Johnson 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.