Regional topographic relief map. (IMAGE) Georgia Institute of Technology Caption From the study: The Cocos and Nazca plates are formed at the EPR and the GSC. The Galápagos Triple Junction (GTJ) trace marks the boundary between EPR- and GSC-derived oceanic crusts. The Galápagos Plume is currently centered beneath the Galápagos Islands 200 km south of the GSC and generates two hot spot tracks, the Cocos Ridge and the Carnegie Ridge. Credit (Naif et al) Usage Restrictions N/A License Original 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.