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    Rights: The International Ocean Discovery Program, Aliki Weststrate Published 28 March 2018 Size: 770 KB Referencing Hub media

    This seismic reflection map is similar to an ultrasound and shows scientists the inside of the Earth as a cross-section. The black line at U1518 is the first drill site for expedition #375 on board JOIDES Resolution. The line shows how deep the drill went – it crosses the red fault that stretches up to the seafloor. By drilling here, scientists can pull up sediment directly from the fault zone to study.