Massive Magma System Discovered Beneath Tuscany

Scientists have identified an extensive magma reservoir hidden beneath Tuscany, a region with few surface indicators of such a large system. Researchers mapped approximately six thousand cubic kilometers of volcanic fluids. This body lies between eight and fifteen kilometers below the surface.

An international team, including scientists from the University of Geneva, the Institute of Geosciences and Earth Resources, and the National Institute of Geophysics and Volcanology, conducted the study. They used ambient noise tomography, a seismic imaging technique. This method analyzes subtle ground vibrations to create a three-dimensional view of subsurface structures.

Seismic waves slow down when passing through hot or partially molten material. By deploying around sixty high-resolution sensors, researchers identified areas where wave velocities were lower. This indicated the presence of magma. The volume of this newly discovered magma system is comparable to those found beneath supervolcanoes like Yellowstone National Park.

The system does not pose an immediate volcanic threat. However, its discovery highlights how large volcanic systems can remain undetected without obvious surface signs. The findings could also aid in locating geothermal energy sources and deposits of critical minerals. These include lithium and rare earth elements, which are vital for technologies supporting the energy transition.