研究者情報
researchmap URL
経歴（RM）
- 2023年04月 - 現在
広島大学, 大学院先進理工系科学研究科, 客員准教授 - 2021年07月 - 現在
国立研究開発法人海洋研究開発機構, 高知コア研究所, 主任研究員 - 2020年10月 - 2021年06月
国立研究開発法人海洋研究開発機構, 高知コア研究所, 副主任研究員 - 2019年04月 - 2020年09月
国立研究開発法人海洋研究開発機構, 高知コア研究所, 研究員 - 2015年10月 - 2019年03月
国立研究開発法人海洋研究開発機構, 高知コア研究所, 技術研究員 - 2014年04月 - 2015年09月
東京工業大学, 地球生命研究所, WPI研究員 - 2013年10月 - 2014年03月
日本学術振興会, 特別研究員（PD） （早期学位取得による資格変更） - 2011年04月 - 2013年09月
日本学術振興会, 特別研究員（DC1）
研究活動情報
論文
- Wenshuai Li; Ryoichi Nakada; James McManus; Brian A. Haley; Mohsen Shakouri; Fulai Li; Yoshio Takahashi
Decoupling cerium isotope fractionation from cerium anomalies in marine sediments
Earth and Planetary Science Letters, 2025年12月
671, 119652, 119652
［査読有り］ - Mizuho Sakurahara; Yoshio Kono; Ryoichi Nakada; Steeve Gréaux
Correlated behavior between valence state of iron and melt structure in (Mg,Fe)SiO3 melt
Chemical Geology, 2025年11月
695, 123080, 123080
［査読有り］ - Yusuke Sawaki; Hisashi Asanuma; Ryoichi Nakada; Mariko Abe
Trace elements in igneous apatite: A case study of redox tracers in felsic plutons
Lithos, 2025年07月
504-505, 108059, 108059
［査読有り］ - Yuanyuan Wang; Wenshuai Li; Ryoichi Nakada; Makoto Nagasawa; Jianxi Zhu; Hongping He; Yoshio Takahashi
Abnormally heavy cerium stable isotope composition in regolith: Implications for redox tracing
Geochimica et Cosmochimica Acta, 2025年04月
［査読有り］ - Yoshio Kono; Chihiro Koyama; Nozomi M. Kondo; Koji Ohara; Hideharu Kuwahara; Ryoichi Nakada; Yuki Watanabe; Hirohisa Oda; Takehiko Ishikawa
Gravitational stability of iron-rich peridotite melt at Mars’ core-mantle boundary
Communications Earth & Environment, 2025年03月03日
6, 148
［査読有り］ - Wenshuai Li; Ryoichi Nakada; Yoshio Takahashi; Richard M. Gaschnig; Yongfeng Hu; Mohsen Shakouri; Roberta L. Rudnick; Xiao-Ming Liu
Cerium geochemical composition of the upper continental crust through time: Implications for tracing past surface redox conditions
Geochimica et Cosmochimica Acta, 2023年10月
［査読有り］ - Iori Kajitani; Mizuho Koike; Ryoichi Nakada; Gaku Tanabe; Tomohiro Usui; Fumihiro Matsu'ura; Keisuke Fukushi; Tetsuya Yokoyama
Identification of carbonate-associated sulfate (CAS) in a Noachian Martian meteorite Allan Hills 84001
Earth and Planetary Science Letters, 2023年10月
［査読有り］ - Hideharu Kuwahara; Ryoichi Nakada
Partitioning of Fe2+ and Fe3+ between bridgmanite and silicate melt: Implications for redox evolution of the Earth's mantle
Earth and Planetary Science Letters, 2023年08月
615, 118197, 118197
［査読有り］ - Hideharu Kuwahara; Ryoichi Nakada; Shintaro Kadoya; Takashi Yoshino; Tetsuo Irifune
Hadean mantle oxidation inferred from melting of peridotite under lower-mantle conditions
Nature Geoscience, 2023年05月04日
［査読有り］ - Wenshuai Li; Xiao-Ming Liu; Ryoichi Nakada; Yoshio Takahashi; Yongfeng Hu; Mohsen Shakouri; Zhaofeng Zhang; Takuma Okumura; Shinya Yamada
The cerium isotope fingerprints of redox fluctuation in bauxites
Earth and Planetary Science Letters, 2023年01月
［査読有り］ - Yoshihiro Kakizkaki; Akihiro Kano; Yasuhiro Ota; Ryoichi Nakada; Kazuya Nagaishi; Kenji Kashiwagi
Pennsylvanian paleoclimatic record in rhythmites developed on an oceanic island of low-latitude Panthalassa
Sedimentary Geology, 2021年10月
424, 105992, 105992
［査読有り］ - Masashi Shidare; Ryoichi Nakada; Tomohiro Usui; Minato Tobita; Kenji Shimizu; Yoshio Takahashi; Tetsuya Yokoyama
Survey of Impact Glasses in Shergottites Searching for Martian Sulfate Using X-ray Absorption Near-Edge Structure
Geochimica et Cosmochimica Acta, 2021年08月
313, 85, 98
［査読有り］
責任著者 - Fumihiro Matsu'ura; Ryoichi Nakada; Tomohiro Usui; Yusuke Sawaki; Yuichiro Ueno; Iori Kajitani; Masafumi Saitoh
Spatial distribution and speciation of sulfur in Ediacaran limestones with μ-XRF imaging and XANES spectroscopy: Implications for diagenetic mobilization of sulfur species
Geochimica et Cosmochimica Acta, 2021年08月
306, 20, 43
［査読有り］ - Hideharu Kuwahara; Shoichi Itoh; Akimasa Suzumura; Ryoichi Nakada; Tetsuo Irifune
Nearly Carbon‐Saturated Magma Oceans in Planetary Embryos During Core Formation
Geophysical Research Letters, 2021年05月28日
48, 10
［査読有り］ - Ryoichi Nakada; Gaku Tanabe; Iori Kajitani; Tomohiro Usui; Masashi Shidare; Tetsuya Yokoyama
EXAFS Determination of Clay Minerals in Martian Meteorite Allan Hills 84001 and Its Implication for the Noachian Aqueous Environment
Minerals, 2021年02月08日
11, 2, 176, 176
［査読有り］
責任著者 - Kazuya Nagaishi; Ryoichi Nakada; Tsuyoshi Ishikawa
High-throughput isotope analysis of sub-nanogram sized lead using MC-ICP-MS with on-line thallium doping technique and desolvating nebulizer system
Geochemical Journal, 2021年01月
55, 1, 1, 9
［査読有り］ - Nozomi M. Kondo; Yoshio Kono; Koji Ohara; Ryoichi Nakada; Toshiaki Ina; Etienne Skrzypek; Akihiro Yamada; Satoshi Saito
Interaction between Cerium and H2O in Hydrous Rhyolitic Melts
ACS Earth and Space Chemistry, 2020年12月17日
4, 12, 2281, 2288
［査読有り］ - Mizuho Koike; Ryoichi Nakada; Iori Kajitani; Tomohiro Usui; Yusuke Tamenori; Haruna Sugahara; Atsuko Kobayashi
In-situ preservation of nitrogen-bearing organics in Noachian Martian carbonates
Nature Communications, 2020年12月
11, 1
［査読有り］ - Ryoichi Nakada; Tomohiro Usui; Masashi Ushioda; Yoshio Takahashi
Vanadium micro-XANES determination of oxygen fugacity in olivine-hosted glass inclusion and groundmass glasses of martian primitive shergottite Yamato 980459
American Mineralogist, 2020年11月01日
105, 11, 1695, 1703
［査読有り］
責任著者 - Hideharu Kuwahara; Ryuichi Nomura; Ryoichi Nakada; Tetsuo Irifune
Corrigendum to “Simultaneous determination of melting phase relations of mantle peridotite and mid-ocean ridge basalt at the uppermost lower mantle conditions” [Phys. Earth Planet. Inter. 284 (2018) 36–50]. (Physics of the Earth and Planetary Interiors (2018) 284 (36–50), (S003192011730362X), (10.1016/j.pepi.2018.08.012))
Physics of the Earth and Planetary Interiors, 2020年06月01日
303 - Go-Ichiro Uramoto; Yuki Morono; Naotaka Tomioka; Shigeyuki Wakaki; Ryoichi Nakada; Rota Wagai; Kentaro Uesugi; Akihisa Takeuchi; Masato Hoshino; Yoshio Suzuki; Fumito Shiraishi; Satoshi Mitsunobu; Hiroki Suga; Yasuo Takeichi; Yoshio Takahashi; Fumio Inagaki
Significant contribution of subseafloor microparticles to the global manganese budget
Nature Communications, 2019年12月
10, 1
［査読有り］ - Ryoichi Nakada; Masahiko Sato; Masashi Ushioda; Yujiro Tamura; Shinji Yamamoto
Variation of Iron Species in Plagioclase Crystals by X‐ray Absorption Fine Structure Analysis
Geochemistry, Geophysics, Geosystems, 2019年11月26日
20, 11, 5319, 5333
［査読有り］
責任著者 - 中田 亮一
希土類元素（REE）地球化学の新展開：REE有機地球化学とREE安定同位体地球化学
地球化学, 2019年09月
53, 3, 107, 124
［査読有り］, ［招待有り］
責任著者 - H. Kuwahara; S. Itoh; R. Nakada; T. Irifune
The Effects of Carbon Concentration and Silicate Composition on the Metal‐Silicate Partitioning of Carbon in a Shallow Magma Ocean
Geophysical Research Letters, 2019年08月28日
46, 16, 9422, 9429
［査読有り］ - Hideharu Kuwahara; Takanori Kagoshima; Ryoichi Nakada; Nobuhiro Ogawa; Asuka Yamaguchi; Yuji Sano; Tetsuo Irifune
Fluorine and chlorine fractionation during magma ocean crystallization: Constraints on the origin of the non-chondritic F/Cl ratio of the Earth
Earth and Planetary Science Letters, 2019年08月
520, 241, 249
［査読有り］ - 桑原 秀治; 野村 龍一; 中田 亮一; 入舩 徹男
下部マントル最上部条件におけるカンラン岩と中央海嶺玄武岩の融解相関係とその部分溶融層の重力的安定性
高圧力の科学と技術, 2019年07月
29, 2, 75, 85
［査読有り］ - Satoshi Takahashi; Ryoichi Nakada; Yusuke Watanabe; Yoshio Takahashi
Iron-depleted pelagic water at the end-Permian mass extinction inferred from chemical species of iron and molybdenum in deep-sea sedimentary rocks
Palaeogeography, Palaeoclimatology, Palaeoecology, 2019年02月
516, 384, 399
［査読有り］
責任著者 - Ryoichi Nakada
Examination of analytical conditions of cerium (Ce) isotope and stable isotope ratio of Ce in geochemical standards
GEOCHEMICAL JOURNAL, 2019年
53, 5, 293, 304
［査読有り］
責任著者 - Ryoichi Nakada
Simultaneous determination of melting phase relations of mantle peridotite and mid-ocean ridge basalt at the uppermost lower mantle conditions
Physics of the Earth and Planetary Interiors, 2018年11月
284, 36, 50
［査読有り］ - M. Sato; Y. Yamamoto; T. Nishioka; K. Kodama; N. Mochizuki; M. Ushioda; R. Nakada; H. Tsunakawa
Constraints on the Source of the Martian Magnetic Anomalies Inferred From Relaxation Time of Remanent Magnetization
Geophysical Research Letters, 2018年07月16日
45, 13, 6417, 6427
［査読有り］ - 佐藤 雅彦; 山本 裕二; 西岡 孝; 小玉 一人; 望月 伸竜; 潮田 雅司; 中田 亮一; 綱川 秀夫
残留磁化緩和時間に基づく火星磁気異常ソースの評価
日本惑星科学会誌, 2018年
27, 173, 179
［査読有り］ - Nakada, R.; Tanaka, M.; Tanimizu, M.; Takahashi, Y.
Aqueous speciation is likely to control the stable isotopic fractionation of cerium at varying pH
Geochimica et Cosmochimica Acta, 2017年
218, 273, 290
［査読有り］
責任著者 - Nakada, R.; Shibuya, T.; Suzuki, K.; Takahashi, Y.
Europium anomaly variation under low-temperature water-rock interaction: A new thermometer
Geochemistry International, 2017年
55, 9, 822, 832
［査読有り］
責任著者 - Nakada, R.; Waseda, A.; Okumura, F.; Takahashi, Y.
Impact of the decarboxylation reaction on rare earth elements binding to organic matter: From humic substances to crude oil
Chemical Geology, 2016年
420, 231, 239
［査読有り］
責任著者 - Nakada, R.; Takahashi, Y.; Tanimizu, M.
Cerium stable isotope ratios in ferromanganese deposits and their potential as a paleo-redox proxy
Geochimica et Cosmochimica Acta, 2016年
181, 89, 100
［査読有り］
責任著者 - Yamanaka, T.; Nagashiov, H.; Nishio, R.; Kondo, K.; Noguchi, T.; Okamura, K.; Nunoura, T.; Makita, H.; Nakamura, K.; Watanabe, H.; Inoue, K.; Toki, T.; Iguchi, K.; Tsunogai, U.; Nakada, R.; Ohshima, S.; Toyoda, S.; Kawai, J.; Yoshida, N.; Ijiri, A.; Sunamura, M.
The Tarama Knoll: Geochemical and Biological Profiles of Hydrothermal Activity
Subseafloor Biosphere Linked to Hydrothermal Systems: TAIGA Concept, 2015年
497, 504
［査読有り］ - Ikeda, M.; Hori, R.S.; Okada, Y.; Nakada, R.
Volcanism and deep-ocean acidification across the end-Triassic extinction event
Palaeogeography, Palaeoclimatology, Palaeoecology, 2015年
440, 725, 733
［査読有り］ - Takahashi, Y.; Hayasaka, Y.; Morita, K.; Kashiwabara, T.; Nakada, R.; Marcus, M.A.; Kato, K.; Tanaka, K.; Shimizu, H.
Transfer of rare earth elements (REE) from manganese oxides to phosphates during early diagenesis in pelagic sediments inferred from REE patterns, X-ray absorption spectroscopy, and chemical leaching method
Geochemical Journal, 2015年
49, 6, 653, 674
［査読有り］ - Nakada, Ryoichi; Ogawa, Kazuhiro; Suzuki, Noritoshi; Takahashi, Satoshi; Takahashi, Yoshio
Late Triassic compositional changes of aeolian dusts in the pelagic Panthalassa: Response to the continental climatic change
Palaeogeography Palaeoclimatology Palaeoecology, 2014年
393, 61, 75
［査読有り］
責任著者 - Nakada, R.; Shirai, T.; Takahashi, S.; Suzuki, N.; Ogawa, K.; Takahashi, Y.
A geochemical constraint on the formation process of a manganese carbonate nodule in the siliceous mudstone of the Jurassic accretionary complex in the Mino Belt, Japan
Journal of Asian Earth Sciences, 2014年
96, 59, 68
［査読有り］
責任著者 - Nakada, Ryoichi; Takahashi, Yoshio; Tanimizu, Masaharu
Isotopic and speciation study on cerium during its solid-water distribution with implication for Ce stable isotope as a paleo-redox proxy
Geochimica Et Cosmochimica Acta, 2013年
103, 49, 62
［査読有り］
責任著者 - Nakada, Ryoichi; Tanimizu, Masaharu; Takahashi, Yoshio
Difference in the stable isotopic fractionations of Ce, Nd, and Sm during adsorption on iron and manganese oxides and its interpretation based on their local structures
Geochimica Et Cosmochimica Acta, 2013年
121, 105, 119
［査読有り］
責任著者 - Etiope, G.; Nakada, R.; Tanaka, K.; Yoshida, N.
Gas seepage from Tokamachi mud volcanoes, onshore Niigata Basin (Japan): Origin, post-genetic alterations and CH4-CO2 fluxes
Applied Geochemistry, 2011年
26, 3, 348, 359
［査読有り］ - Nakada, Ryoichi; Takahashi, Yoshio; Tsunogai, Urumu; Zheng, Guodong; Shimizu, Hiroshi; Hattori, Keiko H.
A geochemical study on mud volcanoes in the Junggar Basin, China
Applied Geochemistry, 2011年
26, 7, 1065, 1076
［査読有り］
責任著者 - Nakada, R.; Takahashi, Y.; Zheng, G.; Yamamoto, Y.; Shimizu, H.
Abundances of rare earth elements in crude oils and their partitions in water
Geochemical Journal, 2010年
44, 5, 411, 418
［査読有り］
