Global data for measured Fe 2 O 3/FeO ratios and Cu contents in unaltered volcanic and
intrusive arc rocks indicate that, on average, they are slightly more oxidized than other …

Arc-basaltic melts of typical hydration state (≥ 2 wt% H 2 O) are buoyant relative to all
common crustal igneous rock types and may pass adiabatically from a mantle source …

Chemical diversity in convergent margin magmas is a product of igneous differentiation in
crustal hot zones, vertically extensive regions characterised by a low-volume (< 20%) mobile …

Crystallisation-driven differentiation is one fundamental mechanism proposed to control the
compositional evolution of magmas. In this experimental study, we simulated polybaric …

Abstract The Fe–Mg exchange coefficient between olivine (ol) and melt (m), defined as Kd _
Fe^ T-Mg Kd Fe T-Mg=(Fe ol/Fe m)·(Mg m/Mg ol), with all Fe T expressed as Fe 2+, is one of …

Equilibrium crystallization experiments have been performed on a primitive high-MgO basalt
(HMB) from Soufrière, St. Vincent, with three initial H2O contents (0· 6, 2· 3 and 4· 5 wt%), at …

The Earth's mantle redox state regulates the fate and transfer of metals by magmatism,
buffers the igneous inputs of volcanic gases in the atmosphere and controls the depth of …

The disequilibrium combination of abundant methane and carbon dioxide has been
proposed as a promising exoplanet biosignature that is readily detectable with upcoming …

Oxygen fugacity (f O2) exerts first-order control on the geochemical evolution of planetary
interiors, and the Fe3+/∑ Fe ratios of silicate glasses provide a useful proxy for f O2. Fe K …

We determined equilibrium Mg isotope fractionation between olivine and melt (Δ 26/24
MgOl/melt) in five, naturally quenched, olivine-glass pairs that were selected to show clear …