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last update date: 2025.4.1

AIST >  Geological Survey of Japan >  Research Institute of Geology and Geoinformation > Toshiki Haji

　　
Profile
Dr. Toshiki Haji
Senior Researcher

@ Research Institute of Geology and Geoinformation
Geological Survey of Japan, AIST

Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan
E-mail：t-haji[at]aist.go.jp
  • Specialties：Stratigraphy, Structural Geology, Geochronology, Volcanology
Education
  • 2015.3 BS Faculty of Science, Kyoto University (Supervisor: Prof. Atsushi Yamaji)
  • 2017.3 MS Graduate school of Science, Kyoto University (Supervisor: Prof. Atsushi Yamaji)
  • 2020.3 DS Graduate school of Science, Kyoto University (Supervisor: Prof. Atsushi Yamaji)
Position
  • 2017.4.-2020.3. Research Assistant @ Geological Survey of Japan, AIST
  • 2020.4.-2024.9. Researcher @ Geological Survey of Japan, AIST
  • 2024.10.- Senior Researcher @ Geological Survey of Japan, AIST
Projects
  • 2020.3- Land Geological map Project (Geological Society of Japan)
  • 2022.4- JSPS KAKENHI Grant Number JP22K14129
Representative Publications

Haji, T., Yamaji, A., Iwano, H., Danhara, T., and Hirata, T., 2022. Extensional stress accompanied by Miocene near-trench magmatism in the southern Kii Peninsula, SW Japan. Journal of Asian Earth Sciences, 235, 105266, doi: 10.1016/j.jseaes.2022.105266.

Uchino, T. and Haji, T., 2021．Lithology and ages of Cretaceous dikes intruding into the Paleozoic-Mesozoic accretionary complexes in the mid-western Kitakami Massif, Iwate Prefecture, and extension tectonics from stress analysis．The Journal of the Geological Society of Japan, 127, 651–666．doi:10.5575/geosoc.2021.0025（in Japanese with English abstract; The Geological Society of Japan Best Paper Award).

Haji, T. and Yamaji, A., 2021. Post‐rift stress history of Southwest Japan inferred from early to middle Miocene intrusions and meso‐scale faults in the Tajima–Myokensan area. Island Arc, 30, e12412, doi:10.1111/iar.12412.

Haji, T. and Yamaji, A., 2020. Termination of intra-arc rifting at ca. 16 Ma in the SW Japan arc: The tectonostratigraphy of the Hokutan Group. Island Arc, 29, e12366, doi: 10.1111/iar.12366. (The Geological Society of Japan Fieldwork Award)

Haji, T., Hosoi, J., and Yamaji, A., 2019. A middle Miocene post-rift stress regime revealed by dikes and mesoscale faults in the Kakunodate area, NE Japan. Island Arc, 28, e12304, doi: 10.1111/iar.12304. (The Geological Society of Japan Young Scientist Award)