Petrotectonics Research Group, Department of Earth Sciences
Division of Geochemistry, Center for Northeast Asian Studies

Latest News

• Dr. Daniel Pastor Galan joins as a new member. October 2016 new!!
  
• New member!! Three pretty bachelor students, April 2016

		How to get to our laboratory to meet us: 2nd floor, Building 3, Kawauchi Canpus, Tohoku University

News!!

Recent Papers

• A. Sofiya, A. Ishiwatari, N. Hirano, T. Tsujimori (2016) International Geology Review in press.　DOI: 10.1080/00206814.2016.1213142
  Relict chromian spinels in Tulu Dimtu serpentinites and listvenite, Western Ethiopia: Implications for the timing of listvenite-formation.
  
• R. J. Stern, M. I. Leybourne, T. Tsujimori (2016) Geology 44 (10), 799-802.　DOI: 10.1130/G38024.1
  Kimberlites and the start of plate tectonics.
  
• S. Pilet, N. Abe, L. Rochat, M. Kaczmarek, N. Hirano, S. Machida, D. Buchs, P. Baumgartner, O. Muntener (2016) Nature Geoscience 9, in press　DOI: 10.1038/ngeo2825
  Pre-subduction metasomatic enrichment of the oceanic lithosphere induced by plate flexure.
  
• W. G. Ernst, N. H. Sleep, T. Tsujimori (2016) Canadian Journal of Earth Sciences, in press　DOI: 10.1139/cjes-2016-0023
  Plate-tectonic evolution of the Earth: bottom-up and top-down mantle circulation.
  
• S. Machida, K. Fujinaga, T. Ishii, K. Nakamura, Hirano, N., Y. Kato (2016) Geochemical Journal, vol. 50, in press　DOI: 10.2343/geochemj.2.0419
  Geology and geochemistry of ferromanganese nodules in the Japanese Exclusive Economic Zone around Minamitorishima Island.
  
• Hirano, N., M. Nakanishi, N. Abe, S. Machida (2016) Marine Geology, vol. 373, p. 39-48　DOI: 10.1016/j.margeo.2016.01.002
  Submarine lava field in French Polynesia.
• Machida, S., Hirano, N., Sumino, H., Hirata, T., Yoneda, S., Kato, Y. (2015) Earth Planet. Sci. Lett. , vol. 426, p. 267-279　DOI: 10.1016/j.epsl.2015.06.018
  Petit-spot geology reveals melts in upper-most asthenosphere dragged by lithosphere.
  
• Desta, M. T., Ayalew, D., Ishiwatari, A., , Arai, S., Tamura, A. (2014) J. Mineral. Petrol. Sci., vol. 109, p. 191-207　DOI: 10.2465/jmps.131125b
  Ferropicrite from the Lalibela area in the Ethiopian large igneous province.
  
• Goto, A., M. Ripepe, G. Lacanna (2014) Geophysical Research Letters, vol. 41, p. 3851-　DOI: 10.1002/2014GL060143
  Wideband acoustic records of explosive volcanic eruptions at Stromboli: New insights on the explosive process and the acoustic source.
  
• Ichiyama, Y., Ishiwatari, A., Kimura, J.-I., Senda, R., Miyamoto, T. (2013) Contributions to Mineralogy and Petrology, vol. 168, p. 1019-　DOI: 10.1007/s004-10-014-1019-1
  Jurassic plume-origin ophiolites in Japan: accreted fragments of oceanic plateaus.
  
• Yamamoto, J., Korenaga, J., Hirano, N., (2013) Kagi, H. Geology, vol. 42, p. 967-980　DOI: 10.1130/G35944.1
  Melt-rich lithosphere- asthenosphere boundary inferred from petit-spot volcanoes.
  
• Okumura, S., Hirano, N. (2013) Geology, vol. 41, p. 1167-1170　DOI: 10.1130/G34620.1
  Carbon dioxide emission to Earth's surface by deep-sea volcanism.
  
• Erdenesaihan, G., Ishiwatari, A., Orolmaa, D., Arai, S. & Tamura, A. (2013) J. Mineral. Petrol. Sci., vol. 108, no. 6, p. 303-325. doi: 10.2465/jmps.130409
  Middle Paleozoic greenstones in the Hangay region, central Mongolia: Remnants of an accreted oceanic plateau and forearc magmatism.
  
• Machida, S. & Ishiwatari, A. (2013) Japanese Magazine of Mineralogical and Petrological Sciences. doi: 10.2465/gkk.120509
  Tectonics of small ultramafic bodies in Northeast Japan, inferred from chemical composition of chromian spinels
  
• Li Y.-B., Kimura, J., Machida, S., Ishii, T., Ishiwatari, A., Maruyama, S., Qiu, H.-N., Ishikawa, T., Kato, Y., Haraguchi, S., Takahata, N., Hirahara, Y., Miyazaki, T. (2013) Journal of Petrology. | doi: 10.1093/petrology/egt008
  High-Mg Adakite and Low-Ca Boninite from a Bonin Fore-arc Seamount: Implications for the Reaction between Slab Melts and Depleted Mantle.
• Hirano, N., Machida, S., Abe, N., Morishita, T., Tamura, A. & Arai. S. (2013) Geochemical Journal
  Petit-spot lava fields off the central Chile trench induced by plate flexure.

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