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    Rights: The International Ocean Discovery Program, Aliki Weststrate Published 10 April 2018 Size: 670 KB Referencing Hub media

    This core is from 800 mbsf (metres below seafloor) in the Hikurangi subduction zone basin. It has been split in half so geologists can describe it and take samples for experiments. It is mudstone with some nuggets of volcanic debris scattered through it (called basaltic clasts). The fossils in them have been dated to about 40 million years old.