I'm principally a petrologist, but frequently integrate mineralogy, electron microscopy, spectroscopy, and geology into my work.
Micro- and nano-meter scale inclusion study
Phase transformation process of minerals
High- and ultrahigh-pressure (HP–UHP) metamorphism at plate convergent margins
Exhumation process of HP–UHP metamorphic rocks
Application of Raman spectroscopy to metamorphic petrology
Micro- and nano-meter scale inclusion study
Through integrated micro-Raman analyses and nano-observation techniques employing a focused ion beam (FIB) system and transmission electron microscopy (TEM), I'm investigating the petrological/mineralogical characteristics of minuscule inclusions and their host minerals in metamorphic rocks worldwide (cf. Taguchi et al., 2021 EPSL; Taguchi et al., 2019b JMG).
Related publications
Taguchi, T., Kouketsu, Y., Igami, Y., Kobayashi, T., Miyake, A. (2021) Hidden intact coesite in deeply subducted rocks, Earth and Planetary Science Letters, 558, 116763, https://doi.org/10.1016/j.epsl.2021.116763.
Taguchi, T., Igami, Y., Miyake, A., Enami, M. (2019b) Factors affecting preservation of coesite in ultrahigh-pressure metamorphic rocks: Insights from TEM observations of dislocations within kyanite. Journal of Metamorphic Geology, 37, 401-414, https://doi.org/10.1111/jmg.12470.
Taguchi, T., Miyake, A., Enami, M., Igami, Y. (2018) Significance of an amorphous SiO2 phase in a pseudomorph after coesite enclosed in garnet from ultrahigh-pressure eclogite, Su–Lu Belt, eastern China. Journal of Metamorphic Geology, 36, 843-854, https://doi.org/10.1111/jmg.12315.
HP–UHP metamorphism at plate convergent margins
In order to decipher the tectono-metamorphic evolution at ancient subduction and collision zones worldwide, I examine the metamorphic character of HP-UHP rocks by integrating conventional petrological approaches with Raman geothermobarometric studies. Principally I have performed laboratory-based investigations on high-pressure type metamorphic rocks from the southwest Japan (Sanbagawa belt), eastern China (Sulu UHP terrane), and others (cf. Taguchi et al., 2019a JMG; Taguchi et al., 2016 JMG).
Related publications
Taguchi, T., Endo, S., Igami, Y., Miyake, A. (2019c) A new occurrence of retrogressed eclogite from the Sanbagawa belt of southwest Japan and its significance. Island Arc, 5, e12317, https://doi.org/10.1111/iar.12317.
Taguchi, T., Enami, M., Kouketsu, Y. (2019a) Metamorphic record of the Asemi‐gawa eclogite unit in the Sanbagawa belt, southwest Japan: Constraints from inclusions study in garnet porphyroblasts. Journal of Metamorphic Geology, 37, 181-201, https://doi.org/10.1111/jmg.12456.
Taguchi, T., Enami, M., Kouketsu, Y. (2016) Prograde evolution of Sulu UHP metamorphic rock in Yangzhuang, Junan region, deduced by combined Raman and petrological studies. Journal of Metamorphic Geology, 34, 683-696, https://doi.org/10.1111/jmg.12203.
Taguchi, T., Enami, M. (2014b) Coexistence of jadeite and quartz in garnet of the Sanbagawa metapelite from the Asemi-gawa region, central Shikoku, Japan. Journal of Mineralogical and Petrological Sciences, 109, 169-176, https://doi.org/10.2465/jmps.140323.
Yoshida, T., Taguchi, T., Ueda, H., Horie, K., Satish-Kumar, M. (2021) Early Carboniferous HP metamorphism in the Hida Gaien Belt, Japan: Implications for the Paleozoic tectonic history of proto‐Japan, Journal of Metamorphic Geology, 39, 77-100, https://doi.org/10.1111/jmg.12564.
Kouketsu, Y., Sadamoto, K., Umeda, H., Kawahara, H., Nagaya, T., Taguchi, T., Mori, H., Wallis, S., Enami, M. (2021) Thermal structure in subducted units from continental Moho depths in a paleo subduction zone, the Asemigawa region of the Sanbagawa metamorphic belt, SW Japan, Journal of Metamorphic Geology, in press, https://doi.org/10.1111/jmg.12584.