Samantha J. Hammond

Hybrid particulate matter generated by lava-ignited wildfires at the Litli-Hrútur 2023 eruption, Iceland

Laura Wainman, Evgenia Ilyinskaya, Melissa Pfeffer, Penny E Wieser et autres

Lava flows from the Litli-Hrútur 2023 eruption ignited the largest moss wildfires since modern record keeping in Iceland began. Volcanically ignited wildfires present a cascading and more complex hazard than standalone volcanic eruptions and are likely to become more frequent globally due …

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Melt reactions and timescales of melting in pelitic rocks—a case study from the Garhwal Himalaya

Charlie Oldman, Clare Warren, Nigel Harris, Barbara E. Kunz et autres

The nature, location, longevity and pressure-temperature conditions of different crustal melt reactions during orogenesis provide constraints on the structure, mechanical strength and exhumation of orogenic middle crust as well as element mobilisation and crustal differentiation. The Himalayan orogen offers a natural laboratory …

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Heterogeneous trace element deposition from an effusive volcanic plume

Laura Wainman, Evgenia Ilyinskaya, Melissa Pfeffer, Céline Mandon et autres

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Role of slab bending in the epithermal gold mineralization of South Kyushu, Japan

Mizuki Ishida, Ryuichi Shinjo, Masataka Aizawa, Hikaru Iwamori et autres

Trace Element Emissions Vary With Lava Flow Age and Thermal Evolution During the Fagradalsfjall 2021–2023 Eruptions, Iceland

Laura Wainman, Evgenia Ilyinskaya, Melissa Pfeffer, Céline Mandon et autres

Abstract Basaltic fissure eruptions emit volatile and environmentally reactive gases and particulate matter (PM) into the lower troposphere (e.g., SO 2 , HCl, and HF in the gas phase; Se, As, Pb as complexes in the PM phase). Lava flows from fissure …

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Silicon isotopes reveal the impact of fjordic processes on the transport of reactive silicon from glaciers to coastal regions

Tong Wang, Hong Chin Ng, Jade Hatton, Samantha J. Hammond et autres

Accelerated mass loss from the Greenland Ice Sheet leads to retreating glaciers and enhanced freshwater runoff to adjacent coastal regions, potentially providing additional essential nutrients, such as silicon, to downstream primary producers. However, the role of fjordic sediments in modulating the supply …

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Trace element emissions vary with lava flow age and thermal evolution during the Fagradalsfjall 2021-2023 eruptions, Iceland.

Laura Wainman, Evgenia Ilyinskaya, Melissa Pfeffer, Céline Mandon et autres

Basaltic fissure eruptions emit an array of volatile and environmentally reactive gases and particulate matter (PM) into the lower troposphere (e.g., SO2, HCl, and HF in the gas phase; Se, As, Pb as complexes in the PM phase). Lava flows from fissure …

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Vanadium isotope fractionation during plutonic differentiation and implications for the isotopic composition of the upper continental crust

Madeleine Stow, Julie Prytulak, Madeleine C. S. Humphreys, Samantha J. Hammond et autres

The analysis of emerging stable isotopic systems in clastic sedimentary rocks is increasingly used to determine the average composition of the upper continental crust through geological time. Any temporal variations can then be linked to global-scale processes such as the oxygenation of …

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A mineralogical and isotopic study of the historic monomict eucrite Padvarninkai

Thomas J. Barrett, A. J. King, G. Degli‐Alessandrini, Samantha J. Hammond et autres

Abstract The Padvarninkai meteorite is a relatively understudied eucrite, initially misclassified as a shergottite given its strong shock characteristics. In this study, a comprehensive examination of the petrology; mineral composition; major, minor, and trace element abundances; and isotopic composition (C, O) is …

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Allanite U–Pb dating places new constraints on the high‐pressure to high‐temperature evolution of the deep Himalayan crust

Eleni Wood, Clare Warren, Barbara E. Kunz, Tom Argles et autres

Abstract During continental collision, crustal rocks are buried, deformed, transformed and exhumed. The rates, timescales and tectonic implications of these processes are constrained through the sequence and conditions of metamorphic reactions in major and accessory phases. Petrographic, isotopic and elemental data from …

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Geological insights from the newly discovered granite of Sif Island between Thwaites and Pine Island glaciers

James Marschalek, Stuart N. Thomson, Claus‐Dieter Hillenbrand, Pieter Vermeesch et autres

Abstract Large-scale geological structures have controlled the long-term development of the bed and thus the flow of the West Antarctic Ice Sheet (WAIS). However, complete ice cover has obscured the age and exact positions of faults and geological boundaries beneath Thwaites Glacier …

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Chalcophile element degassing at an active continental arc volcano

Emily Mason, Marie Edmonds, Samantha J. Hammond, Evgenia Ilyinskaya et autres

Arc volcanoes are significant natural sources of trace chalcophile elements to the atmosphere via gas and aerosol plumes. Villarrica volcano, part of the Andean arc, erupts basaltic magmas and is characterised by a persistent volcanic gas plume and therefore presents an opportunity …

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