Simon Matthews
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View article: Equitable Access, Open Science, and the Future of Publishing in Geochemistry and Cosmochemistry
Equitable Access, Open Science, and the Future of Publishing in Geochemistry and Cosmochemistry Open
The landscape of academic publishing, including in geochemistry and cosmochemistry, is evolving toward greater openness and accessibility. This editorial outlines the vision for Advances in Geochemistry and Cosmochemistry, a diamond open a…
View article: Taking the Temperature of Ocean Islands: A Petrological Approach
Taking the Temperature of Ocean Islands: A Petrological Approach Open
Estimating mantle temperature is essential for understanding mantle convection and circulation. One route to constraining mantle temperature is via petrological observations, from combining estimates of magmatic temperature with models of …
A dynamic mid-crustal magma domain revealed by the 2023-24 Sundhnúksgígar eruptions, Iceland Open
Following periods of unrest in 2020 and late 2023, a sequence of eruptions started in December 2023 in the Svartsengi system, on Iceland’s Reykjanes peninsula. By the end of 2024, seven eruptions had occurred along the Sundhnúksgígar crate…
View article: The Petrology and Geochemistry of the 2021 Fagradalsfjall Eruption, Iceland: An Eruption Sourced From Multiple, Compositionally Diverse, Near‐Moho Sills
The Petrology and Geochemistry of the 2021 Fagradalsfjall Eruption, Iceland: An Eruption Sourced From Multiple, Compositionally Diverse, Near‐Moho Sills Open
Magmatic processes at the crust‐mantle boundary (i.e., Moho) are commonly studied post facto at fossil ophiolites, oceanic core complexes, or inferred from the compositions of crystals or melt inclusions. The 2021 eruption at Fagradalsfjal…
A dynamic mid-crustal magma domain revealed by the 2023 to 2024 Sundhnúksgígar eruptions in Iceland Open
Mid-crustal magma domains are the source of many basaltic eruptions. Lavas from individual eruptions are often chemically homogeneous, suggesting that they derive from single, well-mixed magma reservoirs. The 2023 to 2024 eruptions at Sund…
View article: Global oceanic basalt sources and processes viewed through combined Fe and Mg stable isotopes
Global oceanic basalt sources and processes viewed through combined Fe and Mg stable isotopes Open
Oceanic basalts show variation in their iron and magnesium isotope compositions. One hypothesis for the origin of this is source variation: radiogenic isotope and trace element abundance studies have long argued that the Earth's upper mant…
Numerical modelling of dynamic fluid-rock reactions in subduction settings Open
At subduction zones, geophysical and petrological observations suggest that forearc mantle wedges may be serpentinised by fluids released from the devolatilization of subducting slabs [1]. This pervasive serpentinisation of the wedge may b…
The 2021-23 Fagradalsfjall fires: geochemical and petrological insights Open
After 7000 years of quiescence, three eruptions occurred in 2021, 2022 and 2023 AD in the Fagradalsfjall volcanic system, in Reykjanes peninsula in southwest Iceland. Looking at the eruptive history of the peninsula in the past 4000 years,…
No V-Fe-Zn isotopic variation in basalts from the 2021 Fagradalsfjall eruption Open
The Earth’s mantle is chemically heterogeneous in space and time, which is often reflected by variable isotopic compositions of mantle derived basalts. Basalts from the first 40 days of the 2021 Fagradalsfjall eruption, Reykjanes Peninsula…
Determining the Pressure – Temperature – Composition (P-T-X) conditions of magma storage Open
Determining the pressures and temperatures at which melts are stored in the crust and upper mantle, and the major element composition, redox state and volatile contents of these melts, is vital to constrain the structure and dynamics of ma…
View article: The evolution of the Galápagos mantle plume
The evolution of the Galápagos mantle plume Open
The lavas associated with mantle plumes may sample domains throughout Earth’s mantle and probe its dynamics. However, plume studies are often only able to take snapshots in time, usually of the most recent plume activity, leaving the chemi…
ThermotopesC_DEW, a Python GUI application to automate thermodynamic computations for fluid-rock interactions Open
Fluid-rock interactions are one of the most important processes on Earth and play an important role in many metamorphic systems, especially during fluid migration. Research during the past three decades have provided many new software and …
A heavy stable isotope approach to tracing mantle source and process Open
The geochemistry of global mantle melts suggests that both mid-ocean ridge basalts (MORB) and ocean island basalts (OIB) sample lithological heterogeneities originating in both the upper and lower mantle, with recycled crustal material acc…
New activity coefficients & standard state properties for CO<sub>2</sub> in aqueous fluids in the Extended Deep Earth Water (DEW) model Open
Decades of study of COH-bearing metamorphic and deepEarth fluids have demonstrated strong non-ideality of aqueous CO2 supported by a wealth of experimental and theoretical studies [1].However, aqueous geochemical modeling has generally ass…
pyMelt: An extensible Python engine for mantle melting calculations Open
Modelling the melting of Earth’s mantle is crucial for understanding the distribution of volcanic activity on Earth and for testing models of mantle convection and mantle lithological heterogeneity. pyMelt is a new open-source Python libra…
Supplementary Datasets for 'Exploring rift geodynamics in Ethiopia through olivine-spinel Al-exchange thermometry and rare-earth element distributions' Open
Supplementary Datasets for 'Exploring rift geodynamics in Ethiopia through olivine-spinel Al-exchange thermometry and rare-earth element distributions'. Dataset S1: Qualitative X-ray maps of Mg, Ca, Al, Ni, P in olivine-spinel pairs. Datas…
Supplementary Datasets for 'Exploring rift geodynamics in Ethiopia through olivine-spinel Al-exchange thermometry and rare-earth element distributions' Open
Supplementary Datasets for 'Exploring rift geodynamics in Ethiopia through olivine-spinel Al-exchange thermometry and rare-earth element distributions'. Dataset S1: Qualitative X-ray maps of Mg, Ca, Al, Ni, P in olivine-spinel pairs. Datas…
Temporal Fe-Zn isotopic variations in the chemically heterogeneous Fagradalsfjall eruption, 2021 Open
Lavas from the 2021 Fagradalsfjall eruption, Iceland, show remarkable, day to month scale temporal variations in trace element and radiogenic isotopic compositions. Changes have been attributed to variation in the depth and degree of melti…
An overview of the geochemistry and petrology of the mantle-sourced Fagradalsfjall eruption, Iceland Open
The recent eruption of the Fagradalsfjall complex in the Reykjanes Peninsula of Iceland represents incompletely mixed basaltic magma directly erupted from a sub-crustal storage region. The eruption comprises olivine tholeiite lava with who…
Basalt production controlled by mantle source fertility at Fagradalsfjall, Iceland Open
Mantle melting processes and the characteristics of the source lithologies are mostly derived from basalt compositions of the mid-ocean ridge system and from oceanic islands. However, these basalts are in most cases the products of crustal…