It is a living fossil whose ancestors go back a half billion years—to the early days of complex life on the planet, when the land was barren and the seas were warm. Naturalists have long marveled at its shell. The logarithmic spiral echoes the curved arms of hurricanes and distant galaxies. In Florence, the Medicis turned the pearly shells into ornate cups and pitchers adorned with gold and rubies.
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The first scientists to witness exploding rock and molten lava from a deep sea volcano, seen during a 2009 expedition, report that the eruption was near a tear in the Earth’s crust that is mimicking the birth of a subduction zone. Scientists on the expedition collected boninite, a rare, chemically distinct lava that accompanies the formation of Earths subduction zones. Nobody has ever collected fresh boninite and scientists never had the opportunity to monitor its eruption before, said Joseph Resing, University of Washington oceanographer and lead author of an online article on the findings in Nature Geoscience.
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