Preprints
Filtering by Subject: Volcanology
Volcano-tectonic controls on magmatic evolution at Campi Flegrei, Italy: insights from thermodynamic modelling
Published: 2025-07-14
Subjects: Earth Sciences, Geochemistry, Physical Sciences and Mathematics, Volcanology
Campi Flegrei caldera (Naples, southern Italy) is one of the most hazardous volcanoes on Earth, having produced more than 70 eruptions in the past 15 kyr, and currently showing significant signs of unrest within a densely populated part of Europe. Post-15 ka eruptions span a range of eruptive styles and compositions, which broadly correlate with the spatial and structural location of vents within [...]
Crystal cargo perspectives on magma assembly and dynamics during the 2021 Tajogaite eruption, La Palma, Canary Islands
Published: 2025-07-08
Subjects: Volcanology
The 2021 eruption of Tajogaite was the longest duration eruption, most voluminous, and had the largest human impact in recorded history on La Palma, Canary Islands. Extensive geophysical and geochemical data were collected during both the preceding unrest and eruptive event. Petrological monitoring was largely restricted to rapid stereo microscope observation and a few supporting in-depth studies [...]
Machine Learning Insights into the Geochemical Life Cycle of the Columbia River Flood Basalts
Published: 2025-07-02
Subjects: Earth Sciences, Geochemistry, Geology, Physical Sciences and Mathematics, Stratigraphy, Volcanology
Flood basalts are challenging to characterize in detail, despite enormous their erupted volumes, due to their age and chemical homogeneity. Here we explore machine learning (ML) approaches for classification and pattern identification in whole rock geochemical data of the Columbia River Flood Basalts (CRFB), which provide key constraints on magma generation, transport, and emplacement. We utilize [...]
Field evidence for non-linear IP effects in a volcanic hydrothermal system using reciprocal data.
Published: 2025-06-27
Subjects: Earth Sciences, Physical Sciences and Mathematics, Volcanology
In electrical geophysical methods it is often assumed that the resistivity or chargeability, behaves linearly with the applied electrical current. However, non-linearity has been reported in Induced Polarization (IP) and can be caused by oxidation-reduction reactions or reactions at the surface of clay minerals. Methods to determine the presence of non-linear effects exist and involve analysis of [...]
Improving magmatic CO2 reconstruction using X-ray Computed Tomography to accurately quantify melt inclusion volumes and geometries
Published: 2025-06-04
Subjects: Earth Sciences, Geochemistry, Physical Sciences and Mathematics, Volcanology
Melt inclusions provide valuable insights into magmatic systems, allowing the study of otherwise inaccessible melts. Trapped volatile contents, commonly in the form of bubbles within melt inclusions, allow direct sampling and study of magmatic volatiles that are otherwise lost due to saturation and degassing. Quantifying magmatic volatiles such as CO2 is a complex process requiring multiple [...]
Subsurface hydrothermal alteration mapping in the Reykjanes Geothermal area using a combined geoelectrical approach.
Published: 2025-05-21
Subjects: Earth Sciences, Physical Sciences and Mathematics, Volcanology
The dynamic behavior of volcanic hydrothermal systems (VHS) and associated hydrothermal eruptions remains largely unknown, processes in VHS such as the circulation of hydrothermal fluids and formation of caprock give rise to a range of geophysical signals. Here we explore the combined use of three geo-electric methods: electrical resistivity tomography (ERT), induced polarization (IP), and [...]
Quantifying damage and vulnerability for volcanic hazards
Published: 2025-04-29
Subjects: Volcanology
Reducing volcanic risk requires a comprehensive understanding of the potential impacts of volcanic hazards on various community elements, assets and critical infrastructure. This chapter considers systematic approaches to characterizing the interaction (impacts) between volcanic hazards and assets (broadly defined). Damage states provide a description of volcanic hazard impacts and can be used in [...]
Deep source regions for Patagonia backarc volcanism imaged by finite frequency body wave tomography
Published: 2025-04-09
Subjects: Earth Sciences, Geochemistry, Geology, Geophysics and Seismology, Glaciology, Physical Sciences and Mathematics, Tectonics and Structure, Volcanology
The subduction of Chile Ridge beneath South America beginning 12-16 Myr ago opened a gap in the subducting slab beneath southern Patagonia, which migrated northward and is located today at 46oS. Geodynamic processes associated with the slab window are poorly understood. Here we apply finite-frequency P and S body wave tomography to seismic data from several temporary arrays as well as regional [...]
Volcano stratigraphy and mapping
Published: 2025-04-08
Subjects: Stratigraphy, Volcanology
Volcano-geologic mapping and stratigraphic reconstructions provide important information toward understanding patterns of edifice construction and destruction of volcanic systems, their eruptive histories and recurrence rates, and magmatic evolution and plumbing systems, all of which are required to make informed hazard assessments. Geologic mapping of volcanic terrains also provides context in [...]
A new hypothesis for bimodal volcanism in the Kermadec Arc
Published: 2025-03-29
Subjects: Geochemistry, Geology, Physical Sciences and Mathematics, Volcanology
Bimodal volcanism of basaltic and rhyolitic magmas in the Kermadec Arc has been attributed to the fractional crystallization of basaltic sources. However, new evidence from the Kibblewhite Volcano reveals two distinct differentiation pathways originating from mantle-derived basaltic and andesitic primary magmas. Here we employ geothermobarometric estimations, mass-balance calculations, and [...]
The Petrology, Geochemistry, and Origin of the East Australian Potassic Suite: Bulk Chemistry and Genesis
Published: 2025-03-27
Subjects: Earth Sciences, Geochemistry, Geology, Volcanology
The Eastern Australian Potassic Suite (EAPS) is an alkaline volcanic province made up of over 20 widely dispersed outcrops that extend almost 700 km, forming the southern portion of the world’s longest continental hotspot track, the Cosgrove track. In contrast to the large basaltic volcanic complexes to the east and north, the EAPS occurs exclusively as mafic potassium–rich occurrences with [...]
Orange and Orange-Volcanoes: a New Open and Collaborative Platform to Perform Data-Driven Investigations and Machine Learning Analyses in Petrology and Volcanology
Published: 2025-03-06
Subjects: Earth Sciences, Geochemistry, Multivariate Analysis, Volcanology
Orange-Volcanoes is an extension of the open-source Orange data mining platform specifically tailored for geochemical, petrological, and volcanological investigations. Orange-Volcanoes enhances the original platform by incorporating specialized tools to enable interactive data-driven investigations in geochemistry, such as performing Compositional Data Analysis (CoDA). Applying CoDA [...]
Petrographical evidence of the >1000 km voyage of a white pumice raft that arrived at the Ogasawara and Nansei Islands after the October 2023 earthquakes in the southern Izu Islands
Published: 2025-02-12
Subjects: Volcanology
An earthquake swarm occurred at Sofu Seamount near Izu-Torishima in the Izu-Ogasawara (Bonin) Arc, Japan, on 8 October 2023, followed by the arrival of unexpectedly-large tsunamis over a wide area of the Pacific coast of southwest Japan. On 20 October, aerial observation identified floating pumice rafts extending for ~80 km in the area the seamount, which were subsequently sampled and found to [...]
Methodological Advances in Volcanology: The Role of Artificial Intelligence in Volcano Monitoring, Modelling, and Hazard Assessment
Published: 2025-02-11
Subjects: Earth Sciences, Volcanology
This chapter explores the opportunities and challenges of using Artificial Intelligence (AI) and Machine Learning (ML) in volcanology. It starts by introducing the basic concepts of AI and ML. Then, it discusses the current and potential applications of AI and ML in volcanology, including recent advances in petrology, geophysics, remote sensing, and ground monitoring. We highlight that AI and ML [...]
Where has all the Sinter gone? From the Pink and White Terraces, the Greatest Tourist Attraction of the Southern Hemisphere
Published: 2025-02-02
Subjects: Environmental Studies, Geology, Geomorphology, Other Geography, Paleontology, Physical and Environmental Geography, Spatial Science, Stratigraphy, Volcanology
Debate continues over the silica sinter Pink and White Terraces, the greatest tourist attraction of the southern hemisphere. The 1886 Tarawera eruption may or may not have destroyed them by burial or eruption. This research compiles surviving sinter. The volume is unexpectedly tiny, which bears on the debate. A database was developed including photography. A forensic approach was taken to [...]