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Rights: The International Ocean Discovery Program, Aliki Weststrate Published 10 April 2018 Size: 1.7 MB Referencing Hub media

Usually the core samples (long tubes of sediment and rock the drill pipe brings up from below the seafloor) are soft enough to take samples from. Here, in deep ocean and depths, it has become cemented, so a circular saw is needed to cut pieces off for lab testing.