Lab seminar 2022
Seminar Fall 2022
| date | name | subject |
|---|---|---|
| 10/11 | Tetsuya YOKOYAMA | Chromium and titanium isotope systematics of Ryugu samples |
| 10/14 | Ikshu GAUTAM | Mo isotopic analyses of iron meteorites |
| 10/18 | Makiko K. HABA | Formation age of the Rheasilvia crater constrained from meteorite chronology |
| 10/21 | Nao NAKANISHI | Dissipation of Tungsten-182 Anomalies in the Archean Upper Mantle: Evidence from the Black Hills, South Dakota, USA |
| 10/25 | Tatsuya TAMURA | Re-evaluation of Mo-Double spike calculation method |
| 11/4 | Yuki MASUDA | Nucleosynthetic titanium isotope anomalies in fine-grained CAIs from Allende meteorite |
| 11/11 | Keiji NISHIKAWA | Estimation of the Formation Process of Mars by Chromium Isotope Analysis of Martian Meteorites |
| 11/18 | Yusuke OHKUMA | Determination of Cr and Ti isotopic compositions in chondrites with an alkali fusion digestion method |
| 11/22 | Yoshiaki SHIRAISHI | Chromium isotopic compositions in Al-rich chondrules from two CV chondrites, Allende and Leoville |
| 11/25 | Kaoru KITAMURA | High precision Mo isotopic analysis of ungrouped achondrites |
| 11/29 | Shumpei MASAKI | Mo isotopic anomaly in Mesosiderite and Eucrite |
| 12/2 | Ryu SATO (Ishikawa Lab) | Geochemical evolution of the mantle probled by komatiite magma |
| 12/6 | Hidetoshi MORI (Ishikawa Lab) | Major element analysis of highly depleted peridotites in Iwauchidake, Hokkaido |
| 12/9 | Takumi SATO (Ishikawa Lab) | Elemental mobilization of Oman ophiolite serpentinite |
| 12/16 | Takahiro HAZAMA (Ishikawa Lab) | Estimation of temperature and pressure in mantle xenoliths from the Caroline Hotspot. |
| 1/10 | Yuta IHARA (Ishikawa-lab) | PGE geochemistry of Phanerozoic komatiites and picrites from Gorgona Island, Caribbean-Columbian Oceanic Plateau: implications for multistage melting from heterogeneous source |
| 1/13 | Ryo FUJITA (Ishikawa-lab) | Reconstruction of the lithospheric stratigraphy beneath the Hawaiian Islands: Constraint from the peridotite xenoliths, Kauafi and Kafula Islands, Hawaii |
| 1/17 | Koharu FUJIMURA | Verification of the method to determine the Nb/Zr ratio of meteoritic rutiles using TQ ICP-MS and improvement of Zr ion-exchange chromatography |
| 1/20 | Yuka NIWA (Ishikawa-lab) | Thermal structure of oceanic lithosphere inferred from the petit-spot mantle xenoliths |
| 1/24 | Akira ISHIKAWA (Ishikawa-lab) | Simple and accurate determination of chalcophile and highly siderophile elements in carbonaceous chondrites using triple quadrupole ICP-MS. |
| 1/27 | Yao XIAO | Using the Cr isotope system to indicate the magmatic evolution inside Vesta |
Seminar Spring 2022
| date | name | subject |
|---|---|---|
| 4/12 | Tetsuya YOKOYAMA | Suppression of the secondary mass fractionation in high-precision Cr isotope analysis with TIMS |
| 4/15 | Akira ISHIKAWA | Highly siderophile element constraints on Earth?s mantle evolution |
| 4/19 | Makiko K. HABA | The cooling history of the parent body of mesosiderites after the giant impact |
| 4/22 | Yuki MASUDA | Clarification of formation processes of fine-grained CAIs in Allende meteorite using rare-element distribution analysis |
| 4/26 | Tatsuya TAMURA | Molybdenum isotopic composition of arc volcanos and its implication to the evolution of the Earth |
| 5/6 | Takahiro OZAWA (Ishikawa lab) | Hydrogen isotope of the mantle source in Pitcairn Island |
| 5/10 | Ryo FUJITA (Ishikawa-lab) | Helium isotopes in Hawaiian mantle xenoliths |
| 6/7 | Yuta IHARA (Ishikawa-lab) | Mantle sources of Phanerozoic komatiite from Gorgona Island, Colombia: Implication from osmium isotope heterogeneity |
| 6/10 | Koharu FUJIMURA | The three stage ion exchange procedure for Zr isotope analysis by MC-ICP-MS |
| 6/17 | Keiji NISHIKAWA | Tracking the volatile and magmatic history of Mars from chromium stable isotope variations in Shergottite |
| 6/21 | Yuka NIWA (Ishikawa-lab) | Thermal structure of oceanic lithosphere constrained from the petit-spot mantle xenoliths |
| 6/24 | Takumi SATO (Ishikawa Lab) | Understanding serpentinization and weathering processes approached by the variation of whole rock composition |
| 6/28 | Hidetoshi MORI | Paper reading: Pearson et al. (2021) Deep continental roots and cratons |
| 6/28 | Kaoru KITAMURA | Paper reading: Hibiya et al. (2019) The origin of the unique achondrite Northwest Africa 6704: Constraints from petrology, chemistry and Re?Os, O and Ti isotope systematics |
| 7/5 | Takahiro HAZAMA | Paper reading: Archean cratonic mantle recycled at a mid ocean ridge |
| 7/5 | Yoshiaki SHIRAISHI | Paper reading: [1] Schneider et al. (2020) Early evolution of the solar accretion disk inferred from Cr Ti O isotopes in individual chondrules [2] Williams et al. (2020) Chondrules reveal large scale outward transport of inner Solar System materials in the protoplanetary disk |
| 7/8 | Shumpei MASAKI | Paper reading: Spitzer et al. (2020) Isotopic evolution of the inner Solar System inferred from molybdenum isotopes in meteorites |
| 7/8 | Takashi SATO | Paper reading: Puchtel et al. (2022) Early global mantle chemical and isotope heterogeneity revealed by the komatiite-basalt record: The Western Australia connection |
| 9/30 | Yusuke OHKUMA | Development of an alkaline fusion method for the digestion of carbonaceous chondrites |