New digital seafloor map provides answers and more questions

Ocean sediments cover 70% of our planet's surface, forming the substrate for the largest ecosystem on Earth and its largest carbon reservoir—but the most recent map of seafloor geology was drawn by hand more than 40 years ago. Now Adriana Dutkiewicz and her colleagues from the University of Sydney have carefully analyzed and categorized 15,000 seafloor sediment samples to reveal that deep ocean basins are much more complex than previously thought.

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