Cores (IMAGE) University of Texas at Austin Caption The researchers integrated data from samples of subducting rock and sediment around seamounts, like these cores which were drilled from offshore Japan in 2000. The cores contain a mixture of rock, sediments and water and give researchers insight into what happens as a seamount is ground between tectonic plates. Credit Demian Saffer Usage Restrictions Include photo credit 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.