PhD degrees

  1. Xiaoyu ZHOU (2019) Analytical development for precise an accurate determination of highly siderophile elements in geological samples and its application to the study of Horoman peridotite massif, Japan.
      Related paper: Zhou et al. (2019) A Method to Suppress Isobaric and Polyatomic Interferences for Measurements of Highly Siderophile Elements in Desilicified Geological Samples, Geostandards and Geoanalytical Research, 43(4), 611-633.
  2. Que Ding HOANG (2018) Developement of precise comprehensive element analysis for natural fluids by ICP-MS with freeze-drying pre-concentration and its application to the geochemical study of hot-springs fluids in Misasa area, Tottori, Japan: Implication for the origin of Rn-rich hot spring fluids.
      Related paper: Hoang et al. (2019) Determination of abundances of fifty-two elements in natural waters by ICP-MS with freeze-drying pre-concentration, Geostandards and Geoanalytical Research, 43(1), 147-161.
  3. Dejene Hailemariam FEYISSA (2018) Petrologial and geochemical evidence for diversity of magma compositions at the Ethiopian volcanic province: Implications for thermo-chemical plume influence.
      Related papers:
    • Feyissa et al. (2019) Transition from plume-driven to plate-driven magmatism in the evolution of the Main Ethiopian Rift, Journal of Petrology, 60(8), 1681-1715.
    • Feyissa et al. (2017) Petrologic and geochemical characterization of rift-related magmatism at the northernmost Main Ethiopian Rift: Implications for plume-lithosphere interaction and the evolution of rift mantle sources, Lithos, 282-283, 240-261.
  4. Tai Truong NGUYEN (2018) Petrologial, geochronological and geochemical study of the late Cenozoic volcaninc rocks from the Chugoku district, Southwest Japan: Iplications fo the evolution of subduction zone and volcanic arc.
  5. Iyasu Getachew BELAY (2017) Geochemical Study of the Cameroon Volcanic Line: Implication for the Genesis of Passive Margin Intraplate Magmatism.
      Related paper: Belay et al. (2019) Origin of ocean island basalts in the West African passive margin without mantle plume involvement, Nature Communications, 10, 3022.
  6. Ivan PINEDA-VELASCO (2017) Geochemical and geochronological study of the Cenozoic adakite lavas from SW Japan: Implication for the slab-mantle interaction in a hot subduction system.
      Related papers:
    • Pineda-Velasco et al. (2018) Production of High-Sr Andesite and Dacite Magmas by Melting of Subducting Oceaninc Lithosphere at Propagating Slab Tears, Journal of Geophysical Research: Solid Earth, 123(5), 3698-3728.
    • Pineda-Velasco et al. (2015) Comment on "Diverse magmatic effects of subducting a hot slab in SW Japan: Results from forward modeling" by J.-I. Kimura et al., Geochemistry, Geophysics, Geosystems, 16(9), 2848-2852.
  7. Sunyoung RYU (2012) Highly reliable and precise K-Ar chronology of Holocene volcanic rocks.
      Related paper: Ryu et al. (2013) K-Ar analyses of the post-caldera lavas of Bratan volcano in Bali Island, Indonesia - Ar isotope mass fractionation to light isotope enrichment, Journal of Volcanology and Geothermal Research, 264, 107-116.
  8. Lalindra Viswajith RANAWEERA (2011) F, Cl, S, Water and Li-O-Sr-Nd isotope systematics in Horoman peridotite and gabbro: Implications for fluid-and melt-rock interactions and chemcial evolution of the mantle.
      Related paper: Ranaweera et al. (2018) Circa 1 Ga sub-seafloor hydrothermal alteration imprinted on the Horoman peridotite massif, Scientific Reports, 8, 9887.
  9. Gemechu Melesse ALEMAYEHU (2010) Nature and evolution of North-western and Southern Ethiopian lithospheric mantle: implication from petrology, geochemistry, and geochronology of mantle xenoliths.
  10. Akane YAMAKAWA (2010) Mn-Cr age of monomict ureilites: implications for Cr isotopic strcutre of the early inner solar system.
      Related papers:
    • Yamakawa et al. (2010) Chromium isotope systematic of achondrites: Chronology and isotopic heterogeneity of the inner solar system bodies, The Astrophysical Journal,, 720, 150-154.
    • Yamakawa et al. (2009) Chemical Separation and Mass Spectrometry of Cr, Fe, Ni, Zn, and Cu in Terrestrial and Extraterrestrial Materials Using Thermal Ionization Mass Spectrometry, Analytical Chemistry, 81(23), 9787–9794.
  11. Qiaoyun WANG (2010) Determination of F and Cl in slicates and its application to geochemistry.
      Related paper: Wang et al. (2010) Determination of fluorine and chlorine by pyrohydrolysis and ion chromatography: comparison with alkaline fusion and ion chromatography, Geostandards and Geoanalytical Research, 34, 175-183.
  12. Tesfaye BIZUNEH (2008) Petrogenetic study of Cenozoic flood volcanics in Yabello and Amaro regions, southern Ethiopia.
  13. Sanjeewa MALAVIARACHCHI (2008) Understanding of melting and melt/fluid migration within the Earth's upper mantle using major and trace element and multi-isotopic (Pb, Sm-Nd, Lu-Hf) geochemical tools on residual peridotite.
      Related papers:
    • Malaviarachchi et al. (2010) Melt-peridotite reactions and fluid metasomatism in the upper mantle, revealed from the geochemistry of peridotite and gabbro from the Horoman peridotite massif, Japan. Journal of Petrology, 51(7), 1417-1445.
    • Malaviarachchi et al. (2008) Highly unradiogenic lead isotope ratios from the Horoman peridotite in Japan, Nature Geoscience, 1, 859-863.
  14. Patrick SAKYI (2008) Magma Plumbing System of the Hawaiian Volcanoes: Constraints from Geochemical and Pb Isotopic Study of Olivine-hosted Melt Inclusions.
      Related paper: Sakyi et al. (2012) Inherited Pb isotopic records in olivine antecryst-hosted melt inclusions from Hawaiian lavas, Geochimica et Cosmochimica Acta, 95, 169-195.
  15. Charles MESSO (2008) Geochemistry of volcanic and plutonic rocks from the southern Musoma-Mara greenstone belt : implication for the evolution of the Tanzania craton.
  16. Satoshi TOKESHI (2008) Role of asthenospheric and lithospheric mantle incorporated into intraplate volcanism along a continental margin: Constraints from temporal and spatial geochemical variations of volcanic rocks from northern Kyushu, Japan.
  17. Amar-Amgalan SERJLKHUMBE (2008) U-Pb geochronology and multi-isotopic systems of granitoids from Mongolia, Central Asian Orogenic Belt: Implications for granitoid origin and crustal growth during the Phanerozoic.
  18. Elena Alexeevna KALININA (2007) Comprehensive geochemical study of the volcanic rocks of the northern part of the Cretaceous Okhotsk-Chukotka Volcanic Belt (NE Russia), and its implications for geodynamic models.
      Related papers:
    • Tikhomirov et al. (2016) Trace element and isotopic geochemistry of Cretaceous magmatism in NE Asia: Spatial zonation, temporal evolution, and tectonic controls, Lithos, 264(1), 453-471.
    • Tikhomirov et al. (2012) The Cretaceous Okhotsk– Chukotka Volcanic Belt (NE Russia): Geology, geochronology, magma output rates, and implications on the genesis of silicic LIPs, Journal of Volcanology and Geothermal Research, 221-222, 14-32.
    • Tikhomirov et al. (2008) Late Mesozoic silicic magmatism of the North Chukotka area (NE Russia): Age, magma sources, and geodynamic implications, Lithos, 105(3-4), 329-346.
  19. Takele Akalu CHEKOL (2007) Geochemical evolution of shallow magma plumbing system in the last 240 years, and mantle melting processes beneath Hekla volcano, Iceland: Implication from 238U-230Th-226Ra isotopic disequilibrium and comprehensive geochemical study.
      Related paper: Chekol et al. (2011) Timescales of magma differentiation from basalt to andesite beneath Hekla Volcano, Iceland: constraints from U-series disequilibria in lavas from the last quarter-millennium flows, Geochimica et Cosmochimica Acta, 75(1), 256-283.
  20. Maria Isabel MARIN-CERON (2007) Major, trace element and multi-isotope systematics of SW Colombian volcanic arc, northern Andes: Implication for the stability of carbonate-rich sediment at subduction zone and the genesis of andesite magma.
      Related paper: Marín-Cerón et al. (2010) Slab decarbonation and CO2 recycling in the Southwestern Colombian volcanic arc, Geochimica et Cosmochimica Acta, 74(3), 1104-1121.
  21. Yinghuai LU (2007) Development of analytical methods for Lu-Hf isotope system and applications to studies of crustal growth.
      Related papers:
    • Lu et al. (2007) Coprecipitation of Ti, Mo, Sn and Sb with fluorides and application to determination of B, Ti, Zr, Nb, Mo, Sn, Sb, Hf and Ta by ICP-MS, Chemical Geology, 236(1-2), 13-26.
    • Lu et al. (2007) Purification of Hf in silicate materials using extraction chromatographic resin, and its application to precise determination of 176Hf/177Hf by MC-ICP-MS with 179Hf spike, Journal of Analytical Atomic Spectrometry, 22, 69-76.
  22. Hiroshi KITAGAWA (2006) Petrological and geochemical study of the Icelandic Tertiary lavas: Implications for the evolution of Iceland mantle plume.
      Related paper: Kitagawa et al. (2008) Multiple Pulses of the Mantle Plume: Evidence from Tertiary Icelandic Lavas, Journal of Petrology, 49(7), 1365-1396.
  23. Takeru MORIYAMA (2006) Geochemical and isotopic study of lower crustal xenoliths from Oki-Dogo, Southwest Japan: Implications for the origin and evolution of the continental lower crust.
  24. Tomohiro USUI (2004) A geochemical study of the origin of eclogite xenoliths from the Colorado Plateau, southwestern United States: Implications for the evolution of subducted oceanic crust.
      Related papers:
    • Usui et al. (2007) Trace element fractionation in deep subduction zones inferred from a lawsonite-eclogite xenolith from the Colorado Plateau, Chemical Geology, 239(3-4), 336-351.
    • Usui et al. (2006) Petrology and Geochemistry of Eclogite Xenoliths form the Colorado Plateau: Implications for the Evolution of subducted Oceanic Crust, Journal of Petrology, 47(5), 929-964.
    • Usui et al. (2002) U-Pb isotope systematics of micro-zircon inclusions, Proceedings of the Japan Academy, Series B, 78(3), 51-56.
  25. Hiroyuki TAKEI (2002) Development of precise analytical techniques for major and trace element concentrations in rock samples and their application to the Hishikari Gold Mine, southern Kyushu, Japan.
      Related paper: Takei et al. (2001) Formation and suppression of AlF3 during HF digestion of rock samples in Teflon bomb for precise trace element analyses by ICP-MS and ID-TIMS, Proceedings of the Japan Academy, Series B, 77(1), 13-17.
  26. Arshad, ALI (1999) Geochemical and isotopic study of pyroxene granulites of Swat, Chilas Complex, Kohistan Island arc, Northern Pakistan.
      Related paper: Ali et al. (2002) Sm-Nd mineral ages of pegmatite veins and their host rocks from Swat area, Chilas complex, northern Pakistan, Journal of Asian Earth Sciences, 21(3), 331-339.
  27. Tetsuya YOKOYAMA (1999) Development of precise isotope analysis of uranium and thorium for the study of uranium-thorium disequilibrium in the magma processes.
      Related papers:
    • Yokoyama et al. (2001) Precise analysis of 234U/238U ratio using UO2+ ion with thermal ionization mass spectrometry for natural samples, Chemical Geology, 181(1-4), 1-12.
    • Yokoyama et al. (1999) Separation of thorium and uranium from silicate rock samplesusing two commercial extraction chromatographic resins, Analytical Chemistry, 71(1), 135-141.
  28. Katsura KOBAYASHI (1998) Multi-isotope and trace element systematics of Akagi Volcano: Implication for interaction between island arc magma and lower crust.
      Related papers:
    • K. Kobayashi and E. Nakamura (2001) Geochemical evolution of Akagi Volcano, NE Japan: implications for interaction between island-arc magma and lower crust, and generation of isotopically various magmas, Journal of Petrology, 42(12), 2303-2331.
    • Kobayashi et al. (1997) Sr, Nd and Pb isotope systematics of Akagi volcano, Northeast Japan - Implications for interaction between island arc magma and lower crust, Proceedings of the Japan Academy, Series B, 73(5), 69-73.
  29. Toshio NAKANO (1998) Boron isotope and trace element geochemistry of subduction-related metamorphic rocks: Implications for the transportation of elements during metamorphism.
      Related papers:
    • T. Nakano and E. Nakamura (2001) Boron isotope geochemistry of metasedimentary rocks and tourmalines in a subduction zone metamorphic suite, Physics of The Earth and Planetary Interiors, 127(1-4), 233-252.
    • T. Nakano and E. Nakamura (1998) Static multicollection of Cs2BO2+ ions for precise boron isotope analysis with positive thermal ionization mass spectrometry, International Journal of Mass Spectrometry, 176(1-2), 13-21.
  30. Yoshiyuki IIZUKA (1996) Experimental study on the slab-mantle interactions in subduction zones and its implications for the material recycling through the subduction zones.
      Related papers:
    • Y. Iizuka and E. Nakamura (1995) Experimental-study of the slab-mantle interaction and implications for the formation of titanoclinohumite at deep subduction zone, Proceedings of the Japan Academy, Series B, 71(6), 159-164.
  31. Takuya MORIGUTI (1995) Development of lithium isotope analysis and its application to the geochemistry of oceanic crust and island arc volcanics.
      Related papers:
    • T. Moriguti, and E. Nakamura (1998) Across-arc variation of Li isotopes in lavas and implicationsfor crust/mantle recycling at subduction zones, Earth and Planetary Science Letters, 163(1-4), 167-174.
    • T. Moriguti, and E. Nakamura (1998) High-yield lithium separation and the precise isotopic analysis for natural rock and aqueous samples, Chemical Geology, 145(1-2), 91-104.
    • T. Moriguti and E. Nakamura (1993) Precise lithium isotopic analysis by thermal ionization mass-spectrometry using lithium phosphate as an ion-source material, Proceedings of the Japan Academy, Series B, 69(6), 123-128.
    • Moriguti et al. (1993) Geochemistry and cosmochemistry of lithium: utility of the Li isotopes as a geochemical tracer, Journal of Mineralogy, Petrology and Economic Geology, 88(9), 415-431.
  32. Masako YOSHIKAWA (1993) Development of Strontium isotopic analysis for Mg-rich samples and the Rb-Sr and Sm-Nd isotope systematics in the Horoman peridotite complex, Hokkaido, Japan.
      Related papers:
    • M. Yoshikawa and E. Nakamura (2001) Geochemical evolution of the Horoman peridotite complex:Implications for melt extraction, metasomatism, andcompositional layering in the mantle, Journal of Geophysical Research, 105(B2), 2879-2901.
    • Yoshikawa et al. (1993) Rb-Sr isotope systematics in a phlogopite-bearing spinel lherzolite and its implications for age and origin of metasomatism in the Horoman peridotite complex, Hokkaido, Japan, Journal of Mineralogy, Petrology and Economic Geology, 88(3), 121-130.
    • M. Yoshikawa and E. Nakamura (1993) Precise isotope determination of trace amounts of Sr in magnesium-rich samples, Journal of Mineralogy, Petrology and Economic Geology, 88(12), 548-561.
  33. Tomoyuki SHIBATA (1992) The lead, strontium and neodymium isotopic studies on the Quaternary volcanic rocks from northeastern Japan: implications for the slab mantle interaction in subduction zone. dream/20191007094428-827031
      Related papers:
    • T. Shibata and E. Nakamura (1997) Across-arc variations of isotope and trace element compositions from Quaternary basaltic volcanic rocks in northeastern Japan: Implications for Interaction between subducted oceanic slab and mantle wedge, Journal of Geophysical Research - Solid Earth, 102(B4), 8051-8064.
  34. Tsuyoshi ISHIKAWA (1991) Development of boron isotopic analysis and its application to the geochemistry of oceanic crust and Island arc volcanics.
  35. Akio MAKISHIMA (1991) Development of precise cerium isotope analysis and its application to the geochemistry.