Rock samples that formed about 60 million years ago and were collected from far beneath the ocean surface have helped scientists understand how large amounts of carbon dioxide can remain locked away for extremely long periods. These samples show that CO2 becomes trapped within layers of lava rubble that build up across the seafloor. Researchers examined lava material drilled from deep below the South Atlantic Ocean to measure how much CO2 becomes incorporated into these rocks through interactions between seawater and the cooling volcanic material. Work led by the University…
