Fluids play a critical role in subduction zones and arc magmatism. At shallow levels in
subduction zones (< 40 kilometers depth), expulsion of large volumes of pore waters and …

Titanium is a dispersed lithophile element commonly regarded as chemically immobile at
sub-magmatic temperatures. However, a growing number of field studies demonstrate that Ti …

Following and extending the early work of Velde (1965) the pressure-temperature
dependence of the compositions of potassic white micas coexisting with K-feldspar, quartz …

Subducted crust refertilizes the subarc mantle wedge as well as the deep convecting mantle.
In the subarc region, mass transfer occurs mainly through fluids, melts, or supercritical …

High-P/T metamorphic belts were classified into types A and B according to their protoliths.
The A-type (collision-type) blueschists possess passive-margin protoliths characterized by …

Many Phanerozoic convergent plate junctions are marked by discontinuous blueschist belts,
reflecting relatively high-pressure (P) prograde trajectories. Common blueschist …

Abstract In the Catalina Schist subduction-zone metamorphic complex (California),
metasedimentary rocks show a decrease in N concentration and an increase in δ 15 N air …

Phase relationships in natural andesitic and synthetic basaltic systems were experimentally
investigated from 2.2 to 7.7 GPa, and 550° C to 950° C, in the presence of an aqueous fluid …

The low atomic mass elements B, Be, and Li are viewed as sensitive tracers of the
involvement of subducted materials in the genesis of island arc magmas. In order to better …

Several recently discovered active mud volcanoes on the nonaccretionary Mariana
convergent plate margin are erupting slab-derived fluids, serpentine mud, and …