IODP Science Services Director Bradford Clement explains the workings of paleomagnetism and Earth’s field magnetic reversals and excursions to the ambassador’s group in the core laboratory. Paleomagnetists Marco Maffione (Utrecht University, The Netherlands) and Tony Morris (Plymouth University, United Kingdom) have already identified a full reversal that occurred 750,000 years ago. (Credit: Bill Crawford, IODP/TAMU) [Photo ID: exp351_004] Back to expedition photos.