The composition of much of Earth's lower continental crust is enigmatic. Wavespeeds
require that 10–20% of the lower third is mafic, but the available heat-flow and wavespeed …

The geochemical signatures of subducting crust have been identified in various types of
mafic igneous rocks at convergent plate boundaries, where island arc basalts (IAB) and …

Subduction zones are home to the most seismically active faults on the planet. The shallow
megathrust interfaces of subduction zones host Earth's largest earthquakes and are likely …

Boninites are rare, high-Si, high-Mg, low-Ti lavas that have considerable tectonic
significance, especially for recognizing and interpreting episodes of subduction initiation in …

In subduction zones, sediments and hydrothermally altered oceanic crust, which together
form part of the subducting slab, contribute to the chemical composition of lavas erupted at …

Tectonic or subduction erosion refers to the removal of upper-plate material from the forearc
at convergent margins. Subduction erosion has been suggested to represent a major …

Arc magma acquires continental crust-like trace element signatures through selective
recycling of incompatible elements from the subducted slab. The long-standing model of …

The formation of the Earth's continents is enigmatic. Volcanic arc magmas generated above
subduction zones have geochemical compositions that are similar to continental crust …

Mo isotope compositions have been increasingly used as a source tracer in magmatic
systems. Here, we investigate the relative role of subducting oceanic crust, fluid-rich sources …

Geochemical characteristics of arc magmas reflect incorporation of subducted materials to
their mantle wedge sources in subduction zones. Subduction component addition has been …