Contribution of carbonatite and recycled oceanic crust  to petit-spot lavas on the western Pacific Plate

Mikuni, Kazuto; Hirano, Naoto; Machida, Shiki; Sumino, Hirochika; Akizawa, Norikatsu; Tamura, Akihiro; Morishita, Tomoaki; Kato, Yasuhiro

doi:https://doi.org/10.5194/se-15-167-2024

Articles | Volume 15, issue 2

https://doi.org/10.5194/se-15-167-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/se-15-167-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 2

Research article

|

08 Feb 2024

Research article |

| 08 Feb 2024

Contribution of carbonatite and recycled oceanic crust to petit-spot lavas on the western Pacific Plate

Kazuto Mikuni, Naoto Hirano, Shiki Machida, Hirochika Sumino, Norikatsu Akizawa, Akihiro Tamura, Tomoaki Morishita, and Yasuhiro Kato

Supplement

https://doi.org/10.5194/se-15-167-2024-supplement

Data sets

Results of geochemical analysis and modeling of Mikuni et al. "Contribution of carbonatite and recycled oceanic crust to petit-spot lavas on the western Pacific Plate", Version 1.0 Kazuto Mikuni et al. https://doi.org/10.60520/IEDA/113084

Short summary

Plate tectonics theory is the motion of rocky plates (lithosphere) over ductile zones (asthenosphere). The causes of the lithosphere–asthenosphere boundary (LAB) are controversial; however, petit-spot volcanism supports the presence of melt at the LAB. We conducted geochemistry, geochronology, and geochemical modeling of petit-spot volcanoes on the western Pacific Plate, and the results suggested that carbonatite melt and recycled oceanic crust induced the partial melting at the LAB.