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 …

Subduction zones not only return oceanic lithosphere into the mantle, but are also sites
where chemical components are transferred from the downgoing plate back to the surface in …

Crustal recycling at convergent plate boundaries is essential to mantle heterogeneity.
However, crustal signatures in the mantle source of basaltic rocks above subduction zones …

The lower plate is the dominant agent in modern convergent margins characterized by
active subduction, as negatively buoyant oceanic lithosphere sinks into the asthenosphere …

At subduction zones, crustal material enters the mantle. Some of this material, however, is
returned to the overriding plate through volcanic and plutonic activity. Magmas erupted …

We present a comprehensive geochemical data set for the most recent volcanics from the
Mariana Islands, which provides new constraints on the timing and nature of fluxes from the …

The structure of the earth has been extensively studied using seismic waves generated by
natural earthquakes and man-made sources. In classical seismology, the earth is …

Abstract Porphyry Cu-(Mo-Au) deposits are relatively rare but reproducible products of
subduction-related magmatism. No unique processes appear to be required for their …

Based on a compilation of published sources, rocks referred to as adakites show the
following geochemical and isotopic characteristics: SiO2≥ 56 wt percent, Al2O3≥ 15 wt …

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 …