Halogen systematics (Cl, Br, I) in Mid-Ocean Ridge Basalts: A Macquarie Island case study

MA Kendrick; VS Kamenetsky; D Phillips; M Honda

Journal article

Halogen systematics (Cl, Br, I) in Mid-Ocean Ridge Basalts: A Macquarie Island case study

MA Kendrick, VS Kamenetsky, D Phillips, M Honda

Geochimica Et Cosmochimica Acta | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2012

DOI: 10.1016/j.gca.2011.12.004

Abstract

The abundance of halogens (Cl, Br and I) in the Earth's mantle has the potential to provide information about mantle metasomatism and volatile recycling in subduction zones. Basalt melts sample different parts of the Earth's mantle, but few data are available for Br or I in basalt melts, and the relative partitioning behaviour of these elements has not been investigated rigorously. To address these issues, we determined the abundances of Cl, Br and I in enriched Mid-Ocean Ridge Basalt (E-MORB) glasses from Macquarie Island in the southwest Pacific. The Macquarie Island glasses are fairly typical of Pacific MORB with MgO of ∼5.5. to 9wt%, 87Sr/ 86Sr of 0.70257-0.70276, 143Nd/ 144Nd of 0.51300..

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University of Melbourne Researchers

David Phillips Author

Related Projects (1)

Volatile recycling at the crust-mantle interface: Evidence from halogens and noble gases in deep-crustal fluids.

1) The technique proposed for this study is of proven interest to the mineral exploration industry. This project will: i) increase knowledge..

Grants

Funding Acknowledgements

Stanislav Szczepanski is thanked for technical assistance in the Melbourne University Noble Gas Laboratory. Maya Kamenetsky is gratefully acknowledged for help with sample preparation. Dr. M.A. Kendrick is the recipient of an Australian Research Council QEII Fellowship (Project No. DP0879451). Dr. V. S. Kamenetsky is the recipient of an Australian Research Council Professorial Fellowship (Project No. DP0555984) and the University of Tasmania "New Star" Proffessorship. Bill McDonough and Ray Burgess are gratefully acknowledged for constructive comments on an earlier version of this manuscript and we thank Alessandro Aiuppa and two anonymous reviewers for constructive reviews of the current contribution.