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The chemical composition of subducting sediment and its consequences for the crust and mantle
Subducted sediments play an important role in arc magmatism and crust-mantle recycling. Models of continental growth, continental composition, convergent margin magmatism and mantle heterogeneity allExpand
Constraints from Thorium/Lanthanum on Sediment Recycling at Subduction Zones and the Evolution of the Continents
Arc magmas and the continental crust share many chemical features, but a major question remains as to whether these features are created by subduction or are recycled from subducting sediment. ThisExpand
Element transport from slab to volcanic front at the Mariana arc
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 subducting slab. TheExpand
Petrological systematics of mid-ocean ridge basalts: Constraints on melt generation beneath ocean ridges
Mid-ocean ridge basalts (MORB) are a consequence of pressure-release melting beneath ocean ridges, and contain much information concerning melt formation, melt migration and heterogeneity within theExpand
Constraints on the depths and temperatures of basaltic magma generation on Earth and other terrestrial planets using new thermobarometers for mafic magmas
Abstract Basaltic magmatism is a common feature of dynamically active terrestrial planets. The compositions of basalts reflect the temperatures and pressures of magma generation, providing windowsExpand
Dehydration and melting experiments constrain the fate of subducted sediments
[1] Geochemical tracers demonstrate that elements are cycled from subducted sediments into the arc melting regime at subduction zones, although the transfer mechanism is poorly understood. Are keyExpand
Composition of altered oceanic crust at ODP Sites 801 and 1149
[1] We present a comprehensive major and trace element dataset establishing ODP Site 801 as a geochemical reference for altered oceanic crust. The composition of old crustal sequences like those atExpand
Mantle melting as a function of water content beneath back-arc basins
Subduction zone magmas are characterized by high concentrations of H_(2)O, presumably derived from the subducted plate and ultimately responsible for melting at this tectonic setting. PreviousExpand
The Hf–Nd isotopic composition of marine sediments
Abstract This paper presents new major and trace-element data and Lu–Hf and Sm–Nd isotopic compositions for representative suites of marine sediment samples from 14 drill sites outboard of theExpand