Arctic Seafloor (IMAGE) Columbia Climate School Caption The western portion of the Gakkel Ridge has been found to contain a geochemical signature until now known mainly from the Indian Ocean. Credit IBCAO 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.