Journal article
Tracking halogens through the subduction cycle
MA Kendrick, JD Woodhead, VS Kamenetsky
Geology | Published : 2012
DOI: 10.1130/G33265.1
Abstract
The fiux of halogens into the Earth's mantle at subduction zones is a critical yet poorly constrained parameter in the geochemical evolution of the planet. Here we report the first ever combined high-precision measurements of chlorine, bromine, and iodine for backarc basin basalt (BABB) and ocean island basalt (OIB) glasses. The measurements were undertaken in order to evaluate the depth and extent of the halogen subduction cycle by comparing: (1) melts formed in the Manus Basin (Papua New Guinea) proximal to a modern subduction zone, and (2) melts formed from enriched mantle (EM) reservoirs that have been linked to ancient subduction recycling [EM1 and EM2 sampled by the Pitcairn and Societ..
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Awarded by Australian Research Council QEII
Awarded by Australian Research Council
Funding Acknowledgements
We thank Stan Szczepanski for technical assistance in the noble gas laboratory (run by David Phillips) and Alan Greig for undertaking trace element analyses. Kendrick is the recipient of an Australian Research Council QEII Fellowship (project DP 0879451). Kamenetsky is the recipient of an Australian Research Council Professorial Fellowship (project DP0555984), and the University of Tasmania New Star Professorship. We also thank Jacqueline Dixon and an anonymous reviewer for constructive reviews of this manuscript.