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Showing 1–3 of 3 results

Advanced filters: Author: Tetsu Kogiso Clear advanced filters

Petit-spot as definitive evidence for partial melting in the asthenosphere caused by CO₂

The genesis of primitive CO₂-rich alkali magma at petit-spot volcanoes is still poorly understood. Here, the authors perform high pressure and temperature experiments to show that the CO₂-rich melt is derived from the asthenosphere.

Shiki Machida
Tetsu Kogiso
Naoto Hirano
ResearchOpen Access02 Feb 2017
Nature Communications

Volume: 8, P: 1-7
Abiotic polycyclic aromatic hydrocarbons originating from the sub-oceanic mantle

Itaru Mitsukawa
Akira Miyake
Shota Okumura
ResearchOpen Access14 Jan 2026
Scientific Reports

Volume: 16, P: 1-9
Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust

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 Access01 Jun 2023
Communications Earth & Environment

Volume: 4, P: 1-11