Tanaka Ryoji

タナカリョウジ | Tanaka Ryoji

Affiliation and department：
Job title： Professor
Homepage URL (1)： https://sites.google.com/view/ryojitanaka/

Research field (2)： Space and planetary science , Solid earth science

Research keywords (7)：安定同位体 , 放射性同位体 , 地球宇宙化学 , stable isotope , radiogenic isotope , Geochemistry , Cosmochemistry

Research theme for competitive and other funds (6)：

2023 - 2026 Development of a method for detecting traces of biological activity using multi-transition metal stable isotopes
2020 - 2023 Development of multi-elements triple stable isotope measurements and its application
2016 - 2019 Historical impact of Kosa on Japanese land to enhance soil ability to retain radiocesium
2016 - 2019 Development of high precision chronological method for the determination of volcanic eruption
2014 - 2018 Earth history ocean floor section reconstruction project: Elucidation of environmental changes from Archean to Proterozoic

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Papers (71)：

Yuri Kitagawa, Atsushi Nakao, Ryoji Tanaka, Akira Takeda, Daigo Yamada, Olivier Evrard, Junta Yanai. Relative importance of Asian-dust-derived micas estimated from oxygen isotopic analysis of fine quartz on specific retention of radiocesium in Andosols in Tohoku Region, Japan. Soil Science and Plant Nutrition. 2024
Ryoji Tanaka, Dilan M. Ratnayake, Tsutomu Ota, Noah Miklusicak, Tak Kunihiro, Christian Potiszil, Chie Sakaguchi, Katsura Kobayashi, Hiroshi Kitagawa, Masahiro Yamanaka, et al. Unraveling the Cr Isotopes of Ryugu: An Accurate Aqueous Alteration Age and the Least Thermally Processed Solar System Material. The Astrophysical Journal. 2024. 965. 1. 52-52
Dilan M. Ratnayake, Ryoji Tanaka, Eizo Nakamura. Determination of mass-dependent chromium isotopic compositions in geological samples by double spike-total evaporation-thermal ionization mass spectrometry (DS-TE-TIMS). Analytica Chimica Acta. 2023
Tsutomu Ota, Christian Potiszil, Katsura Kobayashi, Ryoji Tanaka, Hiroshi Kitagawa, Tak Kunihiro, Chie Sakaguchi, Masahiro Yamanaka, Eizo Nakamura. The Formation of a Rubble Pile Asteroid: Insights from the Asteroid Ryugu. Universe. 2023
Christian Potiszil, Masahiro Yamanaka, Chie Sakaguchi, Tsutomu Ota, Hiroshi Kitagawa, Tak Kunihiro, Ryoji Tanaka, Katsura Kobayashi, Eizo Nakamura. Organic Matter in the Asteroid Ryugu: What We Know So Far. Life. 2023

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MISC (8)：

Christian Potiszil, Masahiro Yamanaka, Tsutomu Ota, Ryoji Tanaka, Katsura Kobayashi, Eizo Nakamura. Detection of Meteoritic Amino Acids in Extremely Small Sample Sizes: Implications for Sample Return Missions. Preprints. 2023
中尾淳, 片岡純佳, 富田真悠, 山崎慎一, 田中亮吏, 和穎朗太, 矢内純太. 黄砂がもたらす蛇紋岩アノマリーの緩和効果. 日本土壌肥料学会講演要旨集. 2018. 64. 81
10.1038/s41598-018-28219-x. 2018. 8. 1-12
中尾淳, 寺島真惟, ELLIOTT Crawford, WAMPLER Marion, 田中亮吏, 矢内純太. 酸素同位体比とK-Ar年代を利用した火山灰-黄砂混合比の推定. 日本地球惑星科学連合大会予稿集(Web). 2018. 2018. ROMBUNNO.MIS14-10 (WEB ONLY)
中村栄三, 牧嶋昭夫, 森口拓弥, 小林桂, 田中亮吏, 国広卓也, 北川宙, 太田努, 坂口千恵, 山中正博. 地球惑星物質総合解析システムの構築と応用. 法政大学イオンビーム工学研究所シンポジウム講演予稿集. 2017. 36th

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Patents (1)：

Lectures and oral presentations (29)：

Constraining the processes responsible for the origin and evolution of extraterrestrial organic matter: evidence from the asteroid Ryugu
(Goldschmidt 2023 Conference 2023)
Aqueous alteration on the progenitor body of the asteroid Ryugu revealed through HCNO isotope systematics
(Goldschmidt 2023 Conference 2023)
Development of a sequential ion exchange chromatography method to separate geochemically important tracers for isotope measurements
(Goldschmidt 2023 Conference)
Organic Matter from the Asteroid Ryugu: Implications for the Origin of Life and Asteroidal Processes.
(AGU Fall Meeting 2022 2022)
Characteristics and the distribution of source materials for OIB at the West African passive margin
(Goldschmidt 2017 2017)

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Education (4)：

- 1997 Hokkaido University
- 1997 Hokkaido University Graduate School, Division of Natural Science Department of Earth and Planetary Science
- 1992 Hokkaido University School of Engineering Department of Mineral Resources Engineering
- 1992 Hokkaido University Faculty of Engineering Department of Resource Development Engineering

Professional career (1)：

Work history (16)：

2018 - 現在 - 岡山大学惑星物質研究所教授
2018 - 現在 - Professor,Institute for Study of the Earth's Interior,Okayama University
2009 - 2018 Okayama University The Institute for Planetary Materials
2009 - 2018 Associate Professor,Institute for Study of the Earth's Interior,Okayama University
2007 - 2008 岡山大学地球物質科学研究センター助教

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Association Membership(s) (3)：

Geochemical Society , American Geophysical Union , The Meteoritical Society

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