The Kerguelen Plateau in the Indian Ocean is the world’s longest continuously erupting supervolcano dating back into the Cretaceous, according to research published in the journal Geology. This discovery is quite exceptional, considering that these types of eruptions typically last just 1-5 million years.
For over 30 million years, from around 122 million years ago to 90 million years ago, basaltic lava erupted from fissures on the seafloor building up a volcanic plateau, eventually breaking sea level. The presence of soil layers in the basalt which included charcoal from large trees, indicate that much of the plateau was above sea level between 100 million years ago and 20 million years ago. In the last 20 million years, the volcanic edifice started to sink slowly and is now 1,000–2,000 m (3,300–6,600 ft) below sea level, with the