セミナー
今年度のセミナー
1Q (4/3-6/8)：毎週火曜日 13:30- @315 ／ 毎週木曜日 10:45- @315
2Q (6/9-7/31)：毎週火曜日 8:50- @315 ／ 毎週木曜日 10:45- @315
3Q (10/3-12/2)：毎週火曜日 10:45- @315 ／ 毎週金曜日 10:45- @315
4Q (12/3-2/6)：毎週火曜日 10:45- @315 ／ 毎週金曜日 10:45- @315
2025年度 後期セミナー
| date | name | subject |
|---|---|---|
| 10/3 | All members | Introduction |
| 10/10 | Tetsuya Yokoyama | Reassessment of the residual mass fractionation in Cr isotopic analysis with TIMS |
| 10/14 | Makiko Haba (Haba Lab) | The early evolution of asteroid Vesta |
| 10/17 | Tomoya Obase | Progress report: Development of a TIMS-based method for determining potassium isotope ratios in iron meteorites |
| 11/4 | Akira Ishikawa (Ishikawa lab) | Geochemical structure and evolution of the Earth’s mantle inferred from siderophile element geochemistry |
| 11/18 | Yuhan Xu | Geochronology and genesis of the Shuixie copper-cobalt deposit in Lanping-Simao basin, western Yunnan |
| 11/21 | Nao Nakanishi | My Research and Future Plans |
| 11/25 | Yuka Niwa (Ishikawa lab) | Ancient depleted components recorded in Re-Os isotope composition of petit-spot mantle xenoliths in the northwestern Pacific |
| 11/27 | Clifford Rhys Takeru Lee (Ishikawa lab) | Examining the spatial variability of HSEs in Komatiites to gain a better understanding of Early Earth |
| 12/8 | Akimori Ohta (Ishikawa Lab) | 南アフリカ・Nondweni緑色岩帯におけるコマチアイト質岩石の強親鉄性元素組成の分析 |
| 12/9 | Masami Toyoda (Ishikawa Lab) | 中央インド洋海嶺マリーセレストトランスフォーム断層沿いに産する玄武岩の主要・微量元素濃度、強親鉄性元素およびRe-Os同位体分析 |
| 12/12 | Yuma Tanaka (Ishikawa lab) | Melt-solid partitioning behavior of siderophile elements determined from partial melting experiments for ultramafic rocks |
| 12/15 | Manami Fujita | N-TIMSを用いた少量W同位体比高精度測定 |
| 12/16 | Tatsuki Takeya | Molybdenum isotopic evidence for the contributors to the formation of Earth |
| 12/19 | Ayumi Shirahata | TBA |
| 12/26 | Takahiro Hazama (Ishikawa lab) | TBA |
| 1/6 | Rentaro Takahashi (Ishikawa lab) | TBA |
| 1/9 | Kazuto Mikuni (Ishikawa lab) | TBA |
| 1/13 | Yuya Sugiyama (Ishikawa Lab) | TBA |
| 1/20 | Akio Nomura | TBA |
| 1/23 | Juri Uda | TBA |
| 1/26 | Yan Li | TBA |
| 1/27 | Ikshu Gautam | TBA |
| 2/6 | Karina Lopez Garcia | TBA |
2025年度 前期セミナー
| date | name | subject |
|---|---|---|
| 4/3 | All members | Introduction |
| 4/8 | Tetsuya Yokoyama | Lab safety and rules |
| 4/10 | Tomoya Obase | MORB-like mantle noble gases from a petit-spot volcanic basalt |
| 4/15 | Kazuto Mikuni (Ishikawa Lab) | How to obtain the accurate major element composition of ultramafic rocks through X-ray fluorescence spectrometry |
| 4/22 | Makiko Haba (Haba Lab) | Vesta’s curious fate: high-precision geochronology reveals the evolution of a protoplanet |
| 5/1 | Tetsuya Yokoyama | Ryugu Reference Project: Recommendations from the Measurement Definition Team |
| 5/8 | Yao Xiao | By using Cr and Ti isotopes to identify the subtype of CC chondrites |
| 5/13 | Akira Ishikawa (Ishikawa lab) | Ontong Java Plateau lithosphere and its relation to craton formation |
| 5/15 | Rentaro Takahashi (Ishikawa lab) | Osmium isotope heterogeneity in abyssal peridotites from Mid-Atlantic Ridge |
| 5/22 | Clifford Rhys Takeru Lee (Ishikawa lab) | Examining the spatial variability of HSEs in Komatiites to gain a better understanding of Early Earth |
| 6/3 | Yan Li | Constraints on the Origin of Earth's 142Nd Excess |
| 6/5 | Akio Nomura | Ruthenium isotope analysis in meteorites using negative thermal ionization mass spectrometry |
| 6/10 | Yuya Sugiyama (Ishikawa Lab) | A primitive mantle like highly siderophile element record in ultra-high pressure Archean peridotites from Western Gneiss Region, Norway |
| 6/17 | Yuma Tanaka (Ishikawa lab) | Elemental Partitioning Experiments Between Melt and Solid Phases of Peridotite and Quantitative Analysis of Major Elements by SEM-EDS |
| 6/19 | Yuka Niwa (Ishikawa Lab) | The evolution and structure of oceanic lithosphere inferred from petit-spot mantle xenoliths |
| 6/24 | Masami Toyoda (Ishikawa Lab) | Paper review: Osmium Isotope Heterogeneity in the Constituent Phases of Mid-Ocean Ridge Basalts |
| 6/26 | Manami Fujita | Paper review: High-Precision Tungsten Isotopic Analysis by Multicollection Negative Thermal Ionization Mass Spectrometry Based on Simultaneous Measurement of W and 18O/16O Isotope Ratios for Accurate Fractionation Correction |
| 7/1 | Ayumi Shirahata | Paper review:Chromium isotopic systematics of the Sutter's Mill carbonaceous chondrite: Implications for isotopic heterogeneities of the early solar system |
| 7/3 | Akimori Ohta (Ishikawa Lab) | Paper review: Architectural and Compositional Diversity of Early Earth Ocean Floor Evidenced by the Paleoarchean Nondweni Greenstone Belt, South Africa |
| 7/24 | Karina Lopez Garcia | Small-scale isotopic and chemical variations in CI and CI-like materials |
| 7/29 | Juri Uda (Ishikawa Lab) | Reevaluation of the Eruption Age of the Ontong Java Plateau Basalts |
| 8/5 | Takahiro Hazama (Ishikawa lab) | Yokoyama Lab Ishikawa Lab Seminar Presentation |
| 8/8 | Ikshu Gautam | Update on going project: Mo isotopes as proxy for understanding the later accretion of Earth- A case study of Acasta Complex |