Geochemistry of sediments beneath the Tonga-Kermadec arc, supplement to: George, Rhiannon; Turner, Simon; Morris, Julie; Plank, Terry; Hawkesworth, Chris J; Ryan, Jeffrey (2005): Pressure-temperature-time paths of sediment recycling beneath the Tonga-Kermadec arc. Earth and Planetary Science Letters, 233(1-2), 195-211

Rhiannon George, Simon Turner, Julie Morris, Terry Plank, Chris J Hawkesworth & Jeffrey Ryan
The fate of subducted sediment and the extent to which it is dehydrated and/or melted before incorporation into arc lavas has profound implications for the thermo-mechanical nature of the mantle wedge and models for crustal evolution. In order to address these issues, we have undertaken the first measurements of 10Be and light elements in lavas from the Tonga-Kermadec arc and the sediment profile at DSDP site 204 outboard of the trench. The 10Be/9Be ratios in...
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