The evolving mosaic of tectonic plates across the surface of the Earth sets boundary
conditions for the evolution of biotic and abiotic processes and helps shape the dynamics of …

Understanding variations in eruptive style and defining the processes and controls on
different eruption styles is particularly important at arc volcanoes. This is due to the range of …

The physical and chemical properties of magma govern the eruptive style and behaviour of
volcanoes. Many of these parameters are linked to the storage pressure (P) and temperature …

Deep-sea hydrothermal systems at slow/ultraslow-spreading mid-ocean ridges are often
located within ultramafic rocks that are part of oceanic core complexes. These complexes …

Double seismic zones (DSZs) are a feature of some subducting slabs, where intermediate-
depth earthquakes (~ 70–300 km) align along two separate planes. The upper seismic …

Recurring slow slip along near-trench megathrust faults occurs at many subduction zones,
but for unknown reasons, this process is not universal. Fluid overpressures are implicated in …

Recent geochemical evidence confirms the oxidized nature of arc magmas, but the
underlying processes that regulate the redox state of the subarc mantle remain yet to be …

How subduction-related magmatism starts at convergent plate margins is still poorly
understood. Here we show that boron isotope variations in early-formed boninites from the …

Serpentinite dehydration during subduction releases fluids into the sub‐arc mantle, yet the
oxidizing capability of these fluids remains controversial. Here, redox‐sensitive Cu isotopes …

Fluids released from subducting slabs profoundly affect mantle composition, rock melting
points, and arc magma generation. However, identifying fluid sources (sediments, crust, or …