Mikuni, K., N. Hirano et al. (2024) *open access

Contribution of carbonatite and recycled oceanic crust to petit-spot lavas on the western Pacific Plate. Solid Earth 15, 167-196.

It was really good for us to go to Nemuro. Click here! 

See you next year to get fantastic scenery & geology!

Azami, K., S. Machida N. Hirano et al. (2023) *open access

Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust. Communications Earth & Environment 4, 191.

[press release here] [commentary here]

Mikuni, K., N. Hirano et al. (2022) *open access

Lithological structure of western Pacific lithosphere reconstructed from mantle xenoliths in a petit-spot volcano. Progress in Earth and Planetary Science 9, 62.

Hirano, N., S. Machida (2022) 

The mantle structure below petit-spot volcanoes. *open access

Communications Earth & Environment 3, 110.

[press release here]

Akizawa, N., N. Hirano, K. M. Matsuzaki, S. Machida, C. Tamura, J. Kaneko, H. Iwano, T. Danhara, T. Hirata (2022) A direct evidence for disturbance of whole sediment layer in the subducting Pacific plate by petit-spot magma–water/sediment interaction. Marine Geology 444, 106712.

Hirano, N., H. Sumino, T. Morishita, S. Machida, T. Kawano, K. Yasukawa, T. Hirata, Y. Sato, T. Ishii (2021) A Paleogene magmatic overprint on Cretaceous seamounts of the western Pacific. *open access

Island Arc 30 (1), e12386.

Liu, Hirano et al. (2020)

Melting of recycled ancient crust responsible for the Gutenberg discontinuity. *open access

Nature Communications 11, 172.

Hirano et al. (2019)

Petit-spot volcanoes on the oldest portion of the Pacific Plate.

Deep-Sea Research Part I 154, 103142.

[press release here]

Azami, Hirano, Machida, Yasukawa, Kato (2018)

Rare earth elements and yttrium (REY) variability with water depth in hydrogenetic ferromanganese crusts. Chemical Geology 493, 224-233.

Machida, Kogiso, Hirano (2017)

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

Nature Communications 8, 14302. DOI: 10.1038/ncomms14302

Machida, Hirano, Sumino, Hirata, Yoneda, Kato (2015)

Petit-spot geology reveals melts in upper-most asthenosphere dragged by lithosphere

Earth and Planetary Science Letters 426, 267-279. DOI: 10.1016/j.epsl.2015.06.018.

Hofmann & Hart; Hirano & Koppers; McNutt (2007)

Another Nail in Which Coffin?

Science 315 (5808), 39-40. DOI: 10.1126/science.315.5808.39c

Hirano, Takahashi, Yamamoto, Abe, Ingle, Kaneoka, Kimura, Hirata, Ishii, Ogawa, Machida, Suyehiro (2006)

Volcanism in Response to Plate Flexure.

Science 313 (5792), 1426-1428. DOI: 10.1126/Science.1128235