Scientists witness first-ever seafloor spreading event as 160 million cubic metres of lava create new ocean floor

For most of human history, the creation of new ocean floor has been something inferred rather than witnessed. Geologists could map ancient scars on the seabed, measure the slow movement of tectonic plates and study volcanic rock brought to the surface, but the actual process of seafloor spreading remained largely hidden beneath kilometres of water.That changed in April 2024 in a remote part of the southern Indian Ocean.

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