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Showing 1–5 of 5 results
Advanced filters: Author: Shiki Machida Clear advanced filters

  • The compositional fingerprint of petit-spot magmas represents an enriched mantle source and carbonatitic or carbonated silicate melts below the oceanic lithosphere, suggests a synthesis of geochemical analyses on petit-spot volcanism.

    • Naoto Hirano
    • Shiki Machida
    ReviewsOpen Access
    Communications Earth & Environment
    Volume: 3, P: 1-11

  • The seismic Gutenberg discontinuity has long been associated with the lithosphere-asthenosphere boundary, yet the physical explanation of what is causing the discontinuity remains debated. Here, the authors report geochemical evidence, including Mg isotopes, and suggest that melting of recycled crust is responsible for the Gutenberg discontinuity.

    • Jia Liu
    • Naoto Hirano
    • Teng Ding
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9

  • Iron-manganese oxides with geochemical and mineralogical signatures indicative of low temperature hydrothermal activity are identified in dredged samples from the vicinity of a petit-spot volcano on old and cold oceanic crust east of the Japan Trench.

    • Keishiro Azami
    • Shiki Machida
    • Yasuhiro Kato
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 4, P: 1-11