Tanaka, Ryoji - OU Author List - OKAYAMA UNIVERSITY SCIENTIFIC ACHIEVEMENT REPOSITORY

Lithium- and oxygen-isotope compositions of a Si-rich nebular reservoir determined from chondrule constituents in the Sahara 97103 EH3 chondrite

FullText URL	fulltext.pdf suppl.pdf
Author	Douglas-Song, Torii\| Ota, Tsutomu\| Yamanaka, Masahiro\| Kitagawa, Hiroshi\| Tanaka, Ryoji\| Potiszil, Christian\| Kunihiro, Tak\|
Keywords	Lithium Oxygen Trace elements Chondrule Enstatite chondrite SIMS Sulfidation Silicification
Published Date	2025-07
Publication Title	Geochimica et Cosmochimica Acta
Volume	volume400
Publisher	Elsevier BV
Start Page	51
End Page	71
ISSN	0016-7037
NCID	AA00655038
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
Copyright Holders	© 2025 The Author(s).
File Version	publisher
DOI	10.1016/j.gca.2025.05.038
Web of Science KeyUT	001502517200002
Related Url	isVersionOf https://doi.org/10.1016/j.gca.2025.05.038

Biogeochemical impact of nickel and urea in the great oxidation event

FullText URL	fulltext.pdf suppl.pdf
Author	Ratnayake, Dilan M.\| Tanaka, Ryoji\| Nakamura, Eizo\|
Published Date	2025-08-12
Publication Title	Communications Earth & Environment
Volume	volume6
Issue	issue1
Publisher	Springer Science and Business Media LLC
Start Page	654
ISSN	2662-4435
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
Copyright Holders	© The Author(s) 2025
File Version	publisher
DOI	10.1038/s43247-025-02576-8
Related Url	isVersionOf https://doi.org/10.1038/s43247-025-02576-8

Meteoritic and asteroidal amino acid heterogeneity: Implications for planetesimal alteration conditions and sample return missions

FullText URL	fulltext.pdf suppl.docx
Author	Potiszil, Christian\| Ota, Tsutomu\| Yamanaka, Masahiro\| Kobayashi, Katsura\| Tanaka, Ryoji\| Nakamura, Eizo\|
Keywords	Carbonaceous chondrite Heterogeneity Planetesimal Aqueous alteration Amino acid and meteorite
Published Date	2025-03
Publication Title	Earth and Planetary Science Letters
Volume	volume653
Publisher	Elsevier BV
Start Page	119205
ISSN	0012-821X
NCID	AA00631029
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
Copyright Holders	© 2025 The Authors.
File Version	publisher
DOI	10.1016/j.epsl.2025.119205
Web of Science KeyUT	001407331800001
Related Url	isVersionOf https://doi.org/10.1016/j.epsl.2025.119205

Unraveling the Cr Isotopes of Ryugu: An Accurate Aqueous Alteration Age and the Least Thermally Processed Solar System Material

FullText URL	fulltext.pdf
Author	Tanaka, Ryoji\| Ratnayake, Dilan M.\| Ota, Tsutomu\| Miklusicak, Noah\| Kunihiro, Tak\| Potiszil, Christian\| Sakaguchi, Chie\| Kobayashi, Katsura\| Kitagawa, Hiroshi\| Yamanaka, Masahiro\| Abe, Masanao\| Miyazaki, Akiko\| Nakato, Aiko\| Nakazawa, Satoru\| Nishimura, Masahiro\| Okada, Tatsuaki\| Saiki, Takanao\| Tanaka, Satoshi\| Terui, Fuyuto\| Tsuda, Yuichi\| Usui, Tomohiro\| Watanabe, Sei-ichiro\| Yada, Toru\| Yogata, Kasumi\| Yoshikawa, Makoto\| Nakamura, Eizo\|
Published Date	2024-04-04
Publication Title	The Astrophysical Journal
Volume	volume965
Issue	issue1
Publisher	American Astronomical Society
Start Page	52
ISSN	0004-637X
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
Copyright Holders	© 2024. The Author(s).
File Version	publisher
DOI	10.3847/1538-4357/ad276a
Web of Science KeyUT	001197227200001
Related Url	isVersionOf https://doi.org/10.3847/1538-4357/ad276a

Determination of mass-dependent chromium isotopic compositions in geological samples by double spike-total evaporation-thermal ionization mass spectrometry (DS-TE-TIMS)

FullText URL	fulltext20240208-01.pdf
Author	Ratnayake, Dilan M.\| Tanaka, Ryoji\| Nakamura, Eizo\|
Keywords	Cr isotopes DS-TE-TIMS Cation exchange resin Low blank High precision
Note	© 2023 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/\| This fulltext file will be available in Aug. 2024.\|
Published Date	2023-10-16
Publication Title	Analytica Chimica Acta
Volume	volume1278
Publisher	Elsevier
Start Page	341723
ISSN	0003-2670
NCID	AA00524834
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
Copyright Holders	© 2023 Elsevier B.V.
File Version	author
PubMed ID	37709464
DOI	10.1016/j.aca.2023.341723
Web of Science KeyUT	001069672800001
Related Url	isVersionOf https://doi.org/10.1016/j.aca.2023.341723

The Albedo of Ryugu: Evidence for a High Organic Abundance, as Inferred from the Hayabusa2 Touchdown Maneuver

FullText URL	fulltext.pdf
Author	Potiszil, Christian\| Tanaka, Ryoji\| Kobayashi, Katsura\| Kunihiro, Tak\| Nakamura, Eizo\|
Keywords	Hayabusa2 Ryugu Sample return Organic matter Albedo. Astrobiology 20, 916–921
Published Date	2020-07-08
Publication Title	Astrobiology
Volume	volume20
Issue	issue7
Publisher	Mary Ann Liebert
Start Page	916
End Page	921
ISSN	1531-1074
NCID	AA11837332
Content Type	Journal Article
language	English
Copyright Holders	© Christian Potiszil et al., 2020
File Version	publisher
PubMed ID	32543220
DOI	10.1089/ast.2019.2198
Web of Science KeyUT	000541711900001
Related Url	isVersionOf https://doi.org/10.1089/ast.2019.2198

Hypervelocity collision and water-rock interaction in space preserved in the Chelyabinsk ordinary chondrite

FullText URL	PJAB95_4_165.pdf
Author	Nakamura, Eizo\| Kunihiro, Tak\| Ota, Tsutomu\| Sakaguchi, Chie\| Tanaka, Ryoji\| Kitagawa, Hiroshi\| Kobayashi, Katsura\| Yamanaka, Masahiro\| Shimaki, Yuri\| Bebout, Gray E.\| Miura, Hitoshi\| Yamamoto, Tetsuo\| Malkovets, Vladimir\| Grokhovsky, Victor\| Koroleva, Olga\| Litasov, Konstantin\|
Keywords	ordinary chondrite chronology geochemistry impact melting asteroid comet
Published Date	2019-04-11
Publication Title	Proceedings of the Japan Academy, Ser. B Physical and Biological Sciences
Volume	volume95
Issue	issue4
Start Page	165
End Page	177
ISSN	0386-2208
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
Copyright Holders	© 2019 The Japan Academy
File Version	publisher
PubMed ID	30971619
DOI	10.2183/pjab.95.013
Web of Science KeyUT	000470804000002
Related Url	isVersionOf https://doi.org/10.2183/pjab.95.013

Transition from Plume-driven to Plate-driven Magmatism in the Evolution of the Main Ethiopian Rift

FullText URL	JP60_8_1681.pdf
Author	Feyissa, Dejene Hailemariam\| Kitagawa, Hiroshi\| Bizuneh, Tesfaye Demissie\| Tanaka, Ryoji\| Kabeto, Kurkura\| Nakamura, Eizo\|
Keywords	Ethiopian Plateau Ethiopian rift Afar depression mantle source mantle melting
Published Date	2019-09-12
Publication Title	Journal of Petrology
Volume	volume60
Issue	issue8
Publisher	Oxford University Press
Start Page	1681
End Page	1715
ISSN	0022-3530
NCID	AA0070444X
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
File Version	author
DOI	10.1093/petrology/egz043
Web of Science KeyUT	000509550500007
Related Url	isVersionOf https://doi.org/10.1093/petrology/egz043

Tourmaline in a Mesoarchean pelagic hydrothermal system: Implications for the habitat of early life

FullText URL	Precambrian_Research_334_105475.pdf
Author	Ota, Tsutomu\| Aihara, Yuhei\| Kiyokawa, Shoichi\| Tanaka, Ryoji\| Nakamura, Eizo\|
Keywords	Mesoarchean Hydrothermal system Early life Boron Tourmaline
Note	This fulltext will be available in Nov 2021\|
Published Date	2019-11
Publication Title	Precambrian Research
Volume	volume334
Publisher	Elsevier
Start Page	105475
ISSN	03019268
NCID	AA00780095
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
File Version	author
DOI	10.1016/j.precamres.2019.105475
Web of Science KeyUT	000496875000010
Related Url	isVersionOf https://doi.org/10.1016/j.precamres.2019.105475

Method to Suppress Isobaric and Polyatomic Interferences for Measurements of Highly Siderophile Elements in Desilicified Geological Samples

FullText URL	GeostandardsGeoanalyticalRes_2019.pdf
Author	Zhou, Xiaoyu\| Tanaka, Ryoji\| Yamanaka, Masahiro\| Sakaguchi, Chie\| Nakamura, Eizo\|
Keywords	highly siderophile elements desilicification isotope dilution method high resolution ICP-MS N-TIMS
Published Date	2019-03-20
Publication Title	Geostandards and Geoanalytical Research
Volume	volume43
Issue	issue4
Publisher	John Wiley
Start Page	611
End Page	633
ISSN	16394488
NCID	AA11984494
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
File Version	author
DOI	10.1111/ggr.12280
Web of Science KeyUT	000474428700001
Related Url	isVersionOf https://doi.org/10.1111/ggr.12280

Origin of ocean island basalts in the West African passive margin without mantle plume involvement

FullText URL	NatCom_10_1_3022.pdf
Author	Belay, Iyasu Getachew\| Tanaka, Ryoji\| Kitagawa, Hiroshi\| Kobayashi, Katsura\| Nakamura, Eizo\|
Published Date	2019-07
Publication Title	Nature Communications
Volume	volume10
Issue	issue1
Publisher	Springer Nature Publishing AG
Start Page	3022
ISSN	20411723
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
Copyright Holders	© The Author(s) 2019
File Version	publisher
PubMed ID	31289264
DOI	10.1038/s41467-019-10832-7
Web of Science KeyUT	000474506700008
Related Url	isVersionOf https://doi.org/10.1038/s41467-019-10832-7