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Image-assisted textural analysis of plagioclase crystals in volcanic rocks: an application to lavas erupted on 2021 at Pacaya volcano, Guatemala
Visalli R., Giuffrida M., Cardone M., Costa G., Ortolano G., Viccaro M.
The adoption of semi-automated image processing methods to investigate geopetrological processes has grown quickly in recent years. Utilizing multivariate statistical analysis of X-ray maps, these methods effectively extract quantitative textural, chemical,...

A late Pleistocene-Holocene record of explosive eruptions from central Sumatra (Indonesia) in the western Sunda volcanic arc
Phua M., Forni F., Eisele S., Rifai H., Mohtadi M., Lückge A., Bouvet de Maisonneuve C.
The island of Sumatra within the Indonesian archipelago is home to over 130 active or potentially active volcanoes with a history of explosive eruptions. Highly explosive eruptions with volcanic explosivity index (VEI)≥6 in Sumatra, such as those originating...

Sierra Negra, Galápagos: A resurgent-block basaltic caldera
Acocella V., Galetto F., Amelung F., Aguaiza S.
Caldera resurgence is rare at mafic volcanoes. Here we consider the well-exposed resurgence at Sierra Negra caldera (Galápagos) to investigate how resurgence develops at a mafic system. Based on topographic and field analysis, the structure of...

Sulfur Impurities: The Overlooked Process in Volcanic Hazard Assessment
Scolamacchia T.
One of the most intriguing questions of modern volcanology is the inception of an eruption. Despite efforts to detect premonitory signals, numerous unpredicted eruptions have occurred recently. It has been suggested that these unpredicted eruptions might...

Grapevine rootstocks in K-and Ca-rich volcanic soils: The effect of mineral assemblage on nutrient uptake efficiency
Gaeta M., Pacheco P., Aldega L., Astolfi M.L., Giannessi E., Perinelli C.
This study examines element mobility in volcanic soils to evaluate the relationships between mineral assemblage and the uptake capacity of rootstocks. The Gravesac rootstock, which appears to have a low capacity to selectively absorb K, Ca, Mg, and Na...