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- W2890920468 abstract "Intraplate volcanism across Zealandia, South Eastern Australia, the Ross Sea Embayment and Marie Byrd Land in Antarctica define a magmatic province characterised by basalts with elevated 206Pb/204Pb (18.9–22.5), 87Sr/86Sr = ∼0.7035, Light Rare Earth enrichment [(Ce/Yb)n > 10], and convex-up mantle normalised incompatible multi-element patterns, peaking at Nb-Ta, with negative K and Pb anomalies. Trace element abundances and ratios (e.g. Zr/Nb, Y/Zr) resemble Ocean Island Basalts (OIB), distinct from Mid-Ocean Ridge Basalt (MORB), suggesting derivation from OIB-like reservoirs. Our preferred scenario envisages partial melting across the garnet-spinel stability fields involving asthenospheric and lithospheric mantle components. Melts accumulate in a column where the deep (asthenospheric) source is PM and the shallower source a melange of PM and subcontinental lithospheric mantle (DMM+1) enriched by carbonatite. Evolution of primary and near-primary magmas is controlled by olivine + clinopyroxene fractionation. Trachybasalts, trachytes and rhyolites show isotopic evidence for interaction with continental crust." @default.
- W2890920468 created "2018-09-27" @default.
- W2890920468 creator A5022993168 @default.
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- W2890920468 creator A5064070024 @default.
- W2890920468 date "2018-09-19" @default.
- W2890920468 modified "2023-10-14" @default.
- W2890920468 title "The geochemistry and petrogenesis of Carnley Volcano, Auckland Islands, SW Pacific" @default.
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- W2890920468 doi "https://doi.org/10.1080/00288306.2018.1505642" @default.
- W2890920468 hasPublicationYear "2018" @default.
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