Mineralogy, Petrology & Geochemistry II Laboratory
                    Department of Geosciences, Faculty of Science
                    Osaka City University

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Koizumi, N., Okudaira, T., Ogawa, D., Yamashita, K. and Suda, Y. (2016) Geochemical characteristics of hydrous basaltic magmas due to assimilation and fractional crystallization: the Ikoma gabbroic complex, southwest Japan. Mineralogy and Petrology, 110, 639-662

Okudaira, T., Shigematsu, N., Harigane, Y. and Yoshida, K. (2017) Grain size reduction due to fracturing and subsequent grain-size-sensitive creep in a lower crustal shear zone in the presence of CO2-rich fluid. Journal of Structural Geology, 95, 171-187

Christeson, G.L., Morgan, S., Kodaira, S., Yamashita, M., Almeev, R.R., Michibayashi, K., Sakuyama, T., Ferre, E.C., and Kurz, W. (2016) Physical Properties and Seismic Structure of Izu-Bonin-Mariana Fore Arc Crust: Results from IODP Expedition 352 and Comparison with Oceanic Crust. Geochemistry Geophysics Geosystems, DOI: 10.1002/2016GC006638

Reagan M., Pearce, J. Petronotis, K., Almeev, R., Avery A., Carvallo, C., Champan, T., Christeson, ., Ferre, E., Godard, M., Heaton, D., Kerchenbaur, M., kurz, W., Kutterolf, S., Li, H., Li, Y., Michibayashi, K., Morgan, S., Nelson, W., Prytulak, J., Python, M., Robertson, A., Ryan, J., Sager, W., Sakuyama, T., Shervais, J., Shimizu, K., Whattam, S. (2017) Subduction Initiation and Ophiolite Crust: New Insights From IODP Drilling. International Geology Review, DOI:10.1080/00206814.2016.1276482

Kuritani, T., Sakuyama, T., Kamada, N., Yokoyama, T., Nakagawa, M. (2017) Fluid-fluxed melting of mantle versus decompression melting of hydrous mantle plume as the cause of intraplate magmatism over a stagnant slab: Implications from Fukue Volcano Group, SW Japan. Lithos, 282-283, 98-110

Wallis, S.R. and Okudaira, T. (2016) Paired metamorphic belts in SW Japan: the geology of the Sanbagawa and Ryoke metamorphic belts and the Median Tectonic Line. In: The Geology of Japan (eds. T. Morenoet al.), Geological Society, London, 101-124

三田村圭祐・奥平敬元・三田村宗樹 (2016) 生駒断層帯周辺における露頭規模での脆性変形構造. 地質学雑誌, 122, 61-74

長橋良隆・吉川清志・中井聡子・奥平敬元・吉川周作・吉田武義 (2015) 火山ガラスの主成分・微量成分元素組成に基づくテフラ層の岩石学的特徴?大阪層群と琵琶湖高島沖コアに挟まるテフラ層の例. 地球科学, 69, 205-222

Nasheeth, A., Okudaira, T., Horie, K., Hokada, T. and Satish-Kumar, M. (2016) U-Pb SHRIMP ages of detrital zircons from Hiriyur Formation in Chitradurga greenstone belt and its implication to the Neoarchean evolution of Dharwar craton, South India. Journal of the Geological Society of India, 87, 43-54

Nasheeth, A., Okudaira, T., Horie, K., Hokada, T. and Satish-Kumar, M. (2015) SHRIMP U-Pb zircon ages of granitoids adjacent to Chitradurga shear zone and its tectonic implications. Journal of Mineralogical and Petrological Sciences, 110, 224-234

Okudaira, T., Jer?bek, P., St?nitz, H. and Fusseis, F. (2015) High-temperature fracturing and subsequent grain-size-sensitive creep in lower crustal gabbros: evidence for coseismic loading followed by creep during decaying stress in the lower crust? Journal of Geophysical Research: Solid Earth, 120, doi:10.1002/2014JB011798

Petr?k, I., Jan?k, M., Froitzheim, N., Georgiev, N., Yoshida, K., Sasinkov?, V., Kone?n?, P. and Milovsk?, S. (2016) Triassic to Early Jurassic (c. 200 Ma) UHP metamorphism in the Central Rhodopes: evidence from U?Pb?Th dating of monazite in diamond-bearing gneiss from Chepelare (Bulgaria). Journal of Metamorphic Geology, 34, 265-291, doi: 10.1111/jmg.12181

Yoshida, K. and Hirajima, T. (2015) 3D chemical mapping of ‘Mn-caldera shaped zoning’ garnet found from the Sanbagawa metamorphic belt of the Besshi district, SW Japan. Journal of Mineralogical and Petrological Sciences, 110, 197-213, 10.2465/jmps.140701

Yoshida, K., Hirajima, T., Miyake, A., Tsuchiyama, A., Ohi, S., Nakano, T., and Uesugi, K. (in press) Combined FIB microsampling and X-ray microtomography: a powerful tool for the study of tiny fluid inclusions. European Journal of Mineralogy, doi:10.1127/ejm/2015/0027-2498


井上 淳・北瀬(村上)晶子・奥平敬元 (2014) 球状炭化粒子(SCPs):その特徴と環境学への応用. 地質学雑誌, 120, 287-298

Inoue J, Momose A, Okudaira T, Murakami-Kitase A, Yamazaki H, Yoshikawa S (2014) Chemical characteristics of Northeast Asian fly ash particles: Implications for their long-range transportation. Atmospheric Environment, 95, 375-382

Jan?k M, Froitzheim N, Yoshida K, Sasikov? V, Nosko M, Kobayashi T, Hirajima T, Vrabec M (in press) Diamond in metasedimentary crustal rocks from Pohorje, Eastern Alps: a window to deep continental subduction. Journal of Metamorphic Geology, doi:10.1111/jmg.12130

Majka J, Ros?n ?, Jan?k M, Froitzheim N, Klonowska I, Manecki M, Sasinkov? V, Yoshida K (2014) Microdiamond discovered in the Seve Nappe (Scandinavian Caledonides) and its exhumation by the "vacuum-cleaner" mechanism. Geology, 42, 1107-1110, doi: 10.1130/G36108.1

Orozbaev R, Hirajima T, Bakirov A, Takasu A, Maki K, Yoshida K, Sakiev K, Bakirov A, Hirata T, Tagiri M, Togonbaeva A (in press) Trace element characteristics of clinozoisite pseudomorphs after lawsonite in talc-garnet-chloritoid schists from the Makbal UHP Complex, northern Kyrgyz Tian-Shan. Lithos, doi:10.1016/j.lithos.2014.10.008

Sakuyama T, Nagaoka S, Miyazaki T, Chang Q, Takahashi T, Hirahara Y, Senda R, Itaya T, Kimura J-I, Ozawa K (2014) Melting of the Uppermost Metasomatized Asthenosphere Triggered by Fluid Fluxing from Ancient Subducted Sediment: Constraints from the Quaternary Basalt Lavas at Chugaryeong Volcano, Korea. Journal of Petrology, 55, 499-528

Sakuyama T, Nakai S, Yoshikawa M, Shibata T, Ozawa K (2014) Progressive interaction between dry and wet mantle during high temperature diapiric upwelling:constraints from Cenozoic Kita-Matsuura intraplate basalt province, northwestern Kyushu, Japan. Journal of Petrology, 55, 1083-1128


Sakuyama T, Tian W, Kimura J-I, Fukao Y, Hirahara Y, Takahashi T, Senda R, Chang Q, Miyazaki T, Obayashi M, Kawabata H, Tatsumi Y (2013) Melting of dehydrated oceanic crust from the stagnant slab and of the hydrated mantle transition zone: Constraints from Cenozoic alkaline basalts in eastern China. Chemical Geology, 359, 32-48

Kuritani T, Kimura J-I, Ohtani E, Miyamoto H, Furuyama K (2013) Transition zone origin of potassic basalts from Wudalianchi volcano, northeast China. Lithos 156, 1-12.

Kuritani T, Yoshida T, Kimura J-I, Hirahara Y, Takahashi T (2013) Water content of low-K tholeiitic basalt from Iwate Volcano, NE Japan Arc: implications for differentiation mechanism of frontal-arc basalt magmas. Mineralogy and Petrology, in press.

Momose A, Inoue J, Murakami-Kitase A, Okudaira T, Yoshikawa S (2013) Characteristic differences in the chemical composition of spheroidal carbonaceous particles in Japanese and Chinese cities. Water, Air and Soil Pollution 223, 4761-4767.

Okudaira T, Bando H, Yoshida K (2013) Grain-boundary diffusion rates inferred from grain-size variations of quartz in metacherts from a contact aureole. American Mineralogists 98, 680-688.


Fukuda J, Okudaira T, Satsukawa T, Michibayashi K (2012) Solution-precipitation of K-feldspar in deformed granitoids and its relation to the distribution of water. Tectonophysics 532-535, 175-185.

Masuda H, Shinoda K, Okudaira T, Takahashi Y, Noguchi N (2012) Chlorite-ource of arsenic groundwater pollution in the Holocene aquifer of Bangladesh. Geochemical Journal 46, 381-391.

Nasheeth A, Okudaira T, Satish-Kumar M, Hokada T, Ueno Y (2012) Preliminary results of field survey, petrography and geochemistry on the Chitradurga shear zone in the Hiriyur area, the Dharwar cration, South India. Journal of Geosciences, Osaka City University 55, 43-52.

Okudaira T, Shigematsu N (2012) Estimates of stress and strain rate based on the boundary between the fields of grain-size sensitive and insensitive creep. Journal of Geophysical Research, 117, doi:10.1029/2011JB008799.

Shimojuku A, Yoshino T, Yamazaki D, Okudaira T (2012) Electrical conductivity of fluid-bearing quartzite under lower crustal conditions. Physics of the Earth and Planetary Interioirs 198-199, 1-8.


Hirakawa E, Murakami-Kitase A, Okudaira T, Inoue J, Yamasaki H, Yoshikawa S (2011) The spatial and temporal distributions of spheroidal carbonaceous particles (SCPs) from sediment core samples from industrial cities in Japan and China. Environmental Earth Sciecnes 64, 833-840.

Kuritani T, Ohtani E, Kimura J-I (2011) Intensive hydration of the mantle transition zone beneath China caused by ancient slab stagnation. Nature Geoscience 4, 713-716.

Okudaira T, Suda Y (2011) Cretaceous events recorded in rocks of the Ryoke belt, SW Japan. Journal of Geography 120, 452-465 (in Japanese with English abstract).

Suda Y, Koizumi N, Okudaira, T (2011) X-ray fluorescence analysis of minor, trace and rare erath elements for igneous rocks, sedimentary rocks, sediments and soil. MAGMA 93, 19-32. (in Japanese with English abstract)


Murakami-Kitase A, Okudaira T, Inoue J (2010) Relationship between surface morphology and chemical composition of spheroidal carbonaceous particles within sediment core samples recovered from Osaka Bay, Japan. Environmental Earth Sciences 59, 1723-1729.

Okudaira T, Ogawa D, Michibayashi K (2010) Grain-size-sensitive deformation of upper greenschist- to lower amphibolite-facies metacherts from a low-P/high-T metamorphic belt. Tectonophysics 492, 141-149.

Suda Y, Okudaira T, Furuyama K (2010) X-ray fluorescence (XRF; RIX-2100) analysis of major and trace elements for silicate rocks by low dilution glass bead method. MAGMA 92, 21-39 (in Japanese with English abstract).


Nakagawa S, Masuda H, Okudaira T, Chiba H (2009) Authigenic clay minerals in volcanic ash layers from ODP Site 808 in The Nankai Trough, and their formation condition from those oxygen isotope ratios. Geochemistry 43, 1-13. (in Japanese with English abstract)

Okudaira T, Beppu Y, Yano R, Tsuyama M, Ishii, K (2009) Mid-crustal horizontal shear zone in the forearc region of the mid-Cretaceous SW Japan arc, inferred from strain analysis of rocks within the Ryoke metamorphic belt. Journal of Asian Earth Sciences 35, 34-44.

Seddique AA, Masuda H, Mitamura M, Shinoda K, Okudaira T, Yamanaka T, Itai T, Maruoka T, Uesugi K, Ahmed KM (2009) Reply to the comment on "Arsenic release from biotite into a Holocene groundwater aquifer in Bangladesh" by Anawar HM, Mihaljevi M. Applied Geochemistry 24, 486-490.

Suda Y (2009) Evolutional processes and geotectonic history of Maizuru Terrane, Southwest Japan. Summaries of Researches using AMS at Nagoya University, XX, 39-43.



Beppu Y, Okudaira T (2008) Strain analysis of rocks within a metamorphosed accretionary complex in the Iwakuni-Yanai district, SW Japan. Journal of Geosciences, Osaka City University 51, 1-8.

Okudaira T, Beppu Y (2008) Inhomogeneous deformation of metamorphic tectonites of contrasting lithologies: strain analysis of metapelite and metachert from the Ryoke metamorphic belt, SW Japan. Journal of Structural Geology 30, 39-48.

Nishikawa O, Okudaira T, Yoshida M, Shiraishi T (2008) Deformation structures developed in the Neogene strara in Dewa hilly land, Akita Prefecture. Journal of the Geological Society of Japan 114, Supplement, 75-86. (in Japanese with English abstract)

Suda Y, Kawano Y, Greg Y, Korenaga H, Hiroi Y (2008) Magmatic evolution and tectonic setting of metabasites from Lutzow-Holm Complex, East Antarctica. In Satish-Kumar, M., Motoyoshi, Y., Osanai, Y., Hiroi, Y. and Shiraishi, K. eds, Geodynamic evolution of East Antarctica: a key to the East-West Gondwana connection, Geological Society of London Special Publication, 308, 211-233.

Suda Y, Hayasaka Y (2008) Genesis and evolutional processes of the Paleozoic oceanic island arc crust, Asago body of the Yakuno ophiolite, southwest Japan. International Association for Gondwana Research Conference, Series 7, 39-40.