Sr, Nd, Pb and trace element systematics of the New Caledonia harzburgites: Tracking source depletion and contamination processes in a SSZ setting
Geoscience Frontiers(2020)
摘要
The New Caledonia ophiolite (Peridotite Nappe) consists primarily of harzburgites, locally overlain by mafic-ultramafic cumulates, and minor spinel and plagioclase lherzolites. In this study, a comprehensive geochemical data set (major and trace element, Sr-Nd-Pb isotopes) has been obtained on a new set of fresh harzburgites in order to track the processes recorded by this mantle section and its evolution.
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关键词
Intra-oceanic arcs,Depleted mantle sections,Fore-ac harzburgites,New Caledonia ophiolite,Sr-Nd-Pb isotopes,Subduction zones
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