Deep-sea volcanic eruptions create megaplumes that may have dispersed early life – The Conversation UK

The ocean floor is famously unexplored and is imaged in much less detail than the surfaces of Mars, the Moon and Venus. Draining the water from the oceans would reveal a vast and mostly unknown volcanic landscape. In fact, the majority of Earths volcanic activity occurs underwater and at depths of several kilometres in the deep ocean.
But in contrast to terrestrial volcanoes, even detecting that an eruption has occurred on the seafloor is extremely challenging. Consequently, there remains much…

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