Evidence for suboceanic small-scale convection from a “garnet”-bearing lherzolite xenolith from Aitutaki Island, Cook Islands

Evidence for suboceanic small-scale convection from a “garnet”-bearing lherzolite xenolith from Aitutaki Island, Cook Islands

Garnet peridotite xenoliths have been rarely reported from suboceanic mantle. Petrographic and geochemical characteristics of garnet-bearing oceanic peridotite xenoliths provide precious information on dynamics of the suboceanic lithosphere and asthenosphere interaction. We examined a lherzolite xen...

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Veröffentlicht in:Progress in Earth and Planetary Science 2024-07, Vol.11 (1), p.38-28, Article 38
Hauptverfasser: Akizawa, Norikatsu, Ozawa, Kazuhito, Kogiso, Tetsu, Ishikawa, Akira, Miyake, Akira, Igami, Yohei, Wallis, Simon R., Nagaya, Takayoshi, Ohshima, Chihiro, Fujita, Ryo, Kawamoto, Tatsuhiko, Tamura, Akihiro, Morishita, Tomoaki, Arai, Shoji, Yasumoto, Atsushi
Format: Artikel
Sprache:eng
Schlagworte:
4. Solid earth sciences
Analysis
Atmospheric Sciences
Biogeosciences
Carbonaceous fluid
Convection
Decomposition
Earth and Environmental Science
Earth Sciences
Garnet lherzolite
Geophysical Properties and Transport Processes in the Deep Crust and Mantle
Geophysics/Geodesy
Hydrogeology
Inclusions
Lava
Liquid immiscibility
Lithosphere
Mineral diffusion
Native iron
Oceanic lithosphere
Paper with Full Data Attached
Plagioclase
Planetology
Rocks, Igneous
Spinel group
Temperature changes
Zoning
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Zusammenfassung:Garnet peridotite xenoliths have been rarely reported from suboceanic mantle. Petrographic and geochemical characteristics of garnet-bearing oceanic peridotite xenoliths provide precious information on dynamics of the suboceanic lithosphere and asthenosphere interaction. We examined a lherzolite xenolith included in olivine nephelinite lava from Aitutaki Island, a member of the Cook-Austral volcanic chain. The lherzolite xenolith contains reddish fine-grained (
ISSN:2197-4284
2197-4284
DOI:10.1186/s40645-024-00643-w