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Confocal Scanning laser microscopic (CSLM) characterization of volcanic rocks
Weller, Daniel; Colombier, Mathieu; Cáceres, Francisco; Vasseur, Jérémie; Dingwell, Donald B.; Scheu, Bettina (2024)Optical and microscopical analyses of surficial and internal textures are key elements of volcanic rock characterization. Yet conventional methods for textural analyses often pose challenges and difficulties in terms of ...
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Magma recharge and reheating driving the 2021–2023 tephra emissions of Villarrica volcano, southern Andes
Romero, Jorge E.; Cáceres, Francisco; Guevara, Alicia; Vergara-Pinto, Francisca; Boschetty, Felix; Burton, Mike; Polacci, Margherita; Morgado, Eduardo; Contreras, Claudio; Vera, Franco; Aqueveque, Osiel; Quilodrán, Álvaro; Amigo, Álvaro (2025)Villarrica (Rukapillán) is the highest-threat volcano in Chile. For decades, persistent lava lake degassing within the crater has been interrupted by sporadic periods of unrest with increased Strombolian activity and tephra ...
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Melt viscosity tracks the volcanic and magmatic evolution of the 2021 Tajogaite eruption, La Palma (Canary Islands)
Soldati, Arianna; Cimarelli, Corrado; Kueppers, Ulrich; Cáceres, Francisco; Müller, Dirk; Pankhurst, Matthew; Scarrow, Jane H.; Perez, Nemesio; Dingwell, Donald B. (2024)After more than 50 years of repose, on September 19th, 2021, a volcanic eruption began at the Cumbre Vieja ridge on La Palma, Canary Islands. The combined effusive and explosive activity generated a > 12 km2 lava flow field ...
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Oxide nanolitisation-induced melt iron extraction causes viscosity jumps and enhanced explosivity in silicic magma
Cáceres, Francisco; Hess, Kai-Uwe; Eitel, Michael; Döblinger, Markus; McCartney, Kelly N.; Colombier, Mathieu; Gilder, Stuart A.; Scheu, Bettina; Kaliwoda, Melanie; Dingwell, Donald B. (2024)Explosivity in erupting volcanoes is controlled by the degassing dynamics and the viscosity of the ascending magma in the conduit. Magma crystallisation enhances both heterogeneous bubble nucleation and increases in magma ...