High-enthalpy Larderello geothermal system, Italy, powered by thousands of cubic kilometres of mid-crustal magma

Article Article scientifique Article High-enthalpy Larderello geothermal system, Italy, powered by thousands of cubic kilometres of mid-crustal magma eng 2026-04-14 author Lupi Matteo 0000-0002-2351-6371 Department of Earth Sciences, University of Geneva, Geneva, Switzerland. 843529 Services communs du département des sciences de la terre (DETCO) author Stumpp Douglas 0009-0003-9972-3646 Department of Earth Sciences, University of Geneva, Geneva, Switzerland. 979037 Services communs du département des sciences de la terre (DETCO) author Cabrera-Perez Ivan Department of Earth Sciences, University of Geneva, Geneva, Switzerland. 418592 author Michailos Konstantinos 0000-0003-3011-6939 Department of Earth Sciences, University of Geneva, Geneva, Switzerland.,Research School of Earth Sciences, Australian National University, Canberra, ACT Australia. 405143 author Saccorotti Gilberto 0000-0003-2915-1446 Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy. author Bonini Marco 0000-0003-4818-8076 Institute of Geosciences and Earth Resources, National Research Council of Italy (CNR), Florence, Italy. author Farina Federico 0000-0002-7112-7047 Department of Earth Sciences "A. Desio", Università degli Studi di Milano, Milano, Italy. author Jiwani-Brown Elliot Amir Department of Earth Sciences, University of Geneva, Geneva, Switzerland. 884351 author Lanari Riccardo Institute of Geosciences and Earth Resources, National Research Council of Italy (CNR), Florence, Italy. author Papeschi Samuele 0000-0002-5774-7119 Institute of Geosciences and Earth Resources, National Research Council of Italy (CNR), Florence, Italy. author Savard Geneviève 0000-0001-5464-3384 Department of Earth Sciences, University of Geneva, Geneva, Switzerland. 970891 author Porras Loria Juan Luis Department of Earth Sciences, University of Geneva, Geneva, Switzerland. 405144 Services communs du département des sciences de la terre (DETCO) author Sfalcin Julien Invert SA, Canton Vaud, Switzerland. author Munoz Burbano Francisco Javier Department of Earth Sciences, University of Geneva, Geneva, Switzerland. 852802 Services communs du département des sciences de la terre (DETCO) author Minetto Riccardo 0000-0002-6797-5190 Institut Terre et Environnement de Strasbourg, Université de Strasbourg/CNRS, Strasbourg, France. author Del Ventisette Chiara Department of Earth Science, University of Florence, Florence, Italy. author Piccinini Davide Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy. author Montanari Domenico 0000-0003-1232-7230 Institute of Geosciences and Earth Resources, National Research Council of Italy (CNR), Florence, Italy. 269 10.1038/s43247-026-03334-0 41993777 2662-4435 PMC13079101 https://www.nature.com/articles/s43247-026-03334-0 Thousands of cubic kilometers of magma lie in the upper crust below supervolcanoes such as Yellowstone (USA), Toba (Indonesia), and Taupo (New Zealand). Most of these systems are identified because of surface geomorphology and eruptive deposits. Recognizing such volcanoes without surface evidence is challenging, causing large magmatic reservoirs to go unnoticed. The Tuscan Magmatic Province, Italy, features only sparse Quaternary volcanic activity, but subsurface data indicate the presence of supercritical fluids at shallow depths. Here we show that more than 5'000 km<sup>3</sup> of magma and partial melt are stored in the middle crust of the Tuscan Magmatic Province, Italy. This fuels the high-enthalpy geothermal systems of the region. Such volumes are comparable to those of mid-crust reservoirs beneath recognized supervolcanoes. The discovery of large volumes of magma is critical to explain the long-term evolution of mature magmatic systems and to understand the behavior of large magmatic provinces. Seismology Tectonics Volcanology Dewey 550 42 Département des sciences de la Terre 154 false 1272 Crustal Deformation and Fluid Flow Communications earth & environment 7 1 600375e3-6f9d-48a9-a012-9d5d71de2862 Article (Published version) Public Article_scientifique_from_crossref.pdf 2942965 application/pdf CC BY-NC-ND-4.0 0f79234cc81a79afa969a39024d073476cdcbf5a00614aab55cd97c7142200fa openAccess Faculté des sciences / Section des sciences de la Terre et de l'Environnement / Département des sciences de la Terre

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High-enthalpy Larderello geothermal system, Italy, powered by thousands of cubic kilometres of mid-crustal magma	Communications earth & environment			2026	6	12

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Porras Loria, Juan Luis