Silica-rich spinel harzburgite residues formed by fractional hybridization-melting of the intra-oceanic supra-subduction zone mantle: New evidence from TUBAF seamount peridotites

• Published in: Geochimica et Cosmochimica Acta
• Main Authors: Benard, A, Muntener, Othmar, Pilet, S, Arculus, Richard, Nebel, Oliver
• Format: Article in Journal/Newspaper
• Language: English
• Published: Pergamon Press Ltd. 2023
• Subjects: Silica enrichment; Peridotite; Subduction; Mantle wedge; Hybridization; Partial melting; Xenolith; Bismarck; Kamchatka
• Online Access: http://hdl.handle.net/1885/288162; https://doi.org/10.1016/j.gca.2020.11.001; https://openresearch-repository.anu.edu.au/bitstream/1885/288162/3/1-s2.0-S0016703720306669-main.pdf.jpg

Recent studies of serpentine-free, spinel peridotite xenoliths from the mantle lithosphere beneath the active Kamchatka and West Bismarck arcs have shown that these rocks are enriched in silica and highly depleted in incompatible elements in comparison with melting residues of either primitive or mi...