Geodigest

摘要

Research led by geologists from Curtin University (Perth, Australia) has discovered that a volcanic province in the Indian Ocean was the world's most continuously active large igneous province (LIP), erupting for 30 Myr and was fuelled by a constantly moving 'conveyor belt' of magma (VolcanoDiscovery, 19 November 2020). LIPs are massive crustal emplacements of volcanic rock and are a dominant form of near-surface mag-matism, typically consisting of subaerial basalt flows. Such long-lasting supervolcanic eruptions (capable of producing volume deposits exceeding 1000 cubic km) require very particular geological conditions.