Publication

Peer-reviewed article

1. Akizawa, N., Godard, M., Ildefonse, B., Arai, S. (2023) Formation of lower fast-spread oceanic crust: a structural and geochemical study of troctolites in the Hess Deep Rift (East Pacific Rise). Progress in Earth and Planetary Science, 10, 30. LINK.

2. Murase, I., Kawamoto, T., Akizawa, N., Irie, T. (2023) Rearing in strontium-enriched water induces vaterite otoliths in the Japanese rice fish, Oryzias latipes. Royal Society Open Science, 10, 6673654. LINK.

3. Suzuki, K., Shimoda, G., Ishikawa, A., Kogiso, T., Akizawa, N. (2023) Deciphering deep mantle processes from isotopic and highly siderophile element compositions of mantle-derived rocks: prospects and limitations. AGU Geophysical Monograph Series, 276, 75– 102. LINK.

4. Akizawa, N., Hirano, N., Machida, S., Ishikawa, A., Niwa, Y., Shimoda, G., Yasukawa, K., Matsuzaki, K.M., Tamura, C. and Kaneko, J. (2022): Rock and sediment dataset of petit-spots in the northwestern Pacific. Data in Brief, 45, 108764. LINK.

5. Mikuni, K., Hirano, N., Akizawa, N., Yamamoto, J., Machida, S., Tamura, A., Hagiwara, Y., Morishita, T. (2022) Lithological structure of western Pacific lithosphere reconstructed from mantle xenoliths in a petit-spot volcano. Progress in Earth and Planetary Science, 9, 62. LINK.

6. Akizawa, N. (2022) Behavior of water in the lower oceanic crust. Geochemistry, 56, 52–63. LINK.

7. Eom, J., Yoshimura, T. Akizawa, N., Wakaki, S. Ishikawa, T., Takazawa, E., Yamaoka, K., Kawahata, H. (2022) Mg Isotopic Compositions of Crust and Mantle: A Study on the Oman Ophiolite. Chemical Geology, 606, 120969. LINK.

8. Akizawa, N., Hirano, N., Matsuzaki, K.M., Machida, S., Tamura, C., Kaneko, J., Iwano, H., Danhara, T., Hirata, T. (2022) A direct evidence for disturbance of whole sediment layer in the subducting Pacific plate by petit-spot magma–water/sediment interaction. Marine Geology, 444, 106712. LINK.

9. Akizawa, N., Ohara, Y., Okino, K., Ishizuka, O., Yamashita, H., Machida, S., Sanfilippo, A., Basch, V., Snow, J.E., Sen, A., Hirauchi, K.-I., Michibayashi, K., Harigane, Y., Fujii, M., Asanuma, H., Hirata, T. (2021) Geochemical characteristics of back-arc basin lower crust and upper mantle at final spreading stage of Shikoku Basin: an example of Mado Megamullion. Progress in Earth and Planetary Science, 8, 65, LINK.

10. Whattam, S.A., Früh-Green, G., Cannat, M., De Hoog, J.C.M., Schwarzenbach, E.M., Escartin, J., John, B.E., Leybourne, M.I., Williams, M.J., Rouméjon, S., Akizawa, N., Boschi, C., Harris, M., Wenzel, K., McCaig, A., Weis, D., Bilenker, L. (in press) Geochemistry of serpentinized and multiphase altered Atlantis Massif peridotites (IODP Expedition 357): Petrogenesis and discrimination of melt-rock vs. fluid-rock processes. Chemical Geology. LINK.

11. Sen, A., Snow, J.E., Ohara, Y., Hirauchi, K., Kouketsu, Y., Sanfilippo, A., Basch, V., Harigane, Y., Fujii, M., Okino, K., Akizawa, N. (2021) Melting and Evolution of Amphibole-Rich Back-Arc Abyssal Peridotites at the Mado Megamullion, Shikoku Basin. Geochemistry, Geophysics, Geosystems, 22, e2021GC010013, LINK.

12. Akizawa, N., Yamaguchi, A., Tani, K., Ishikawa, A., Fujita, R., Choi, S.H. (in press) Highly refractory dunite formation in Gibbs Island and Bruce Bank, and its role in the evolution of the circum-Antarctic continent. The Canadian Mineralogist.

13. Akizawa, N., Miyake, A., Igami, Y., Tsuchiyama, A., Asanuma, H., Kogiso, T., Wakaki, S., Ishikawa, T., Arai, S., Eom, J., Kawahata, H., Aze, T., Yokoyama, Y. (2021) Crustal anorthosite formation by deep-seated hydrothermal circulation beneath fast-spreading axis: Constraints from chronological approach, Sr isotope, and fluid­–chromite inclusion investigation. Island Arc, 30, e12423, LINK.

14. Akizawa, N., Ozawa, K., Yoshikawa, M. (2021) Decoding pressure-temperature-deformation history of the mantle: Critical review on the Horoman peridotite complex and new proposals. The journal of the Geological Society of Japan 127, 269–291. LINK.

15. Basch, V., Sanfilippo, A., Sani, C., Ohara, Y., Snow, J., Ishizuka, O., Harigane, Y., Michibayashi, K., Sen, A., Akizawa, N., Okino, K., Fujii, M., Yamashita, H. (2020) Crustal accretion in a slow spreading back‐arc basin: Insights from the Mado Megamullion Oceanic Core Complex in the Shikoku Basin. Geochemistry Geophysics Geosystems 21, e2020GC009199. LINK.

16. Arai, S., Ishimaru, S., Miura, M., Akizawa, N., Mizukami, T. (2020) Post-serpentinization formation of theophrastite-zaratite by heazlewoodite desulfurization: An implication for shallow behavior of sulfur in a subduction complex. Minerals, 10, 806. LINK.

17. Kogiso T., Akizawa, N. Miyake, A., Uesugi, M. (2020) Attempt at mineralogical identification of platinum-group-element-bearing microphases in peridotite with microbeam X-ray diffraction. SPring-8 Section A: Scientific Research Report. LINK.

18. Arai, S., Miura, M., Tamura, A., Akizawa, N., Ishikawa, A. (2020) Hydrothermal chromitites from the Oman ohiolite: the role of water in chromitite genesis. Minerals. LINK.

19. Akizawa, N., Ishikawa, A., Kogiso, T. (2020) A simple determination of whole-rock major- and trace-element composition for peridotite by micro-XRF spectrometer and ICP-MS using fused-glass bead. Geochemical Journal 54, 81–90. LINK.

20. Akizawa, N., Kogiso, T., Miyake, A., Tcuchiyama, A., Igami, Y., Uesugi, M. (2020) Formation process of sub-micrometer-sized metasomatic platinum-group element-bearing sulfide in Tahitian harzburgite xenolith. Canadian Mineralogist. LINK.

21. Akizawa, N., Früh-Green, G., Tamura, A., Tamura, C., and Morishita, T. (2020) Compositional heterogeneity and melt transport in mantle beneath Mid-Atlantic Ridge constrained by peridotite, dunite, and wehrlite from Atlantis Massif. Lithos 354–355, 105364. LINK.

22. Früh-Green, G.L., Orcutt, B.N., Rouméjon, S., Lilley, M.D., Akizawa, N., et al. (2018) Magmatism, serpentinization and life: insights through drilling the Atlantis Massif (IODP Expedition 357). Lithos 323, 137–155. LINK.

23. Akizawa, N., Miyake, A., Ishikawa, A., Tamura, A., Terada, Y., Uesugi, K., Takeuchi, A., Arai, S., Tanaka, C., Igami, Y., Suzuki, K., Kogiso, T. (2017) Metasomatic PGE mobilization by carbonatitic melt in the mantle: evidence from sub-µm-scale sulfide–carbonaceous glass inclusion in Tahitian harzburgite xenolith. Chemical Geology 475, 87–104. LINK.

24. Habtoor, A.M., Ahmed, A.H., Akizawa, N., Harbi, H., Arai, S. (2017) Chemical homogeneity of high-Cr chromitites as indicator for widespread invasion of boninitic melt in mantle peridotite of Bir Tuluha ophiolite, Northern Arabian Shield, Saudi Arabia. Ore Geology Reviews 90, 243–259. LINK.

25. Akizawa, N., Tamura, A., Fukushi, K. Yamamoto, J, Mizukami, T., Pythin, M., Arai, S. (2016) High-temperature hydrothermal activities around suboceanic Moho: an example from diopsidite and anorthosite in Wadi Fizh, Oman ophiolite. Lithos 263, 66–87. LINK.

26. Akizawa, N., Ozawa, K., Tamura, A., Michibayashi, K., Arai, S. (2016) Three dimensional evolution of melting, heat and melt transfer in ascending mantle beneath a fast-spreading ridge segment constrained by trace elements in clinopyroxene from concordant dunites and host harzburgites of the Oman ophiolite. Journal of Petrology 57, 777–814. LINK.

27. Tamura, A., Akizawa, N., Otsuka, R., Kanayama, K., Python, M., Morishita, T., Arai, S. (2015) Measurement of whole-rock trace-element composition by flux-free fused glass and LA-ICP-MS: Evaluation of simple and rapid routine work. Geochemical Journal 49, 243–258. LINK.

28. Tamura, A., Akizawa, N., Arai, S. (2014) Measurement of whole-rock trace-element composition of Cr-rich rocks on fused glass by LA-ICP-MS: data reliability of chromite-bearing fused glass. Science reports of Kanazawa University 58, 13–29. LINK.

29. Akizawa, N. and Arai, S. (2014) Petrology of mantle diopsidite from Wadi Fizh, northern Oman ophiolite: Cr and REE mobility by hydrothermal solution. Island Arc 23, 312–323. LINK.

30. Arai, S. and Akizawa, N. (2014) Precipitation and dissolution of chromite by hydrothermal solutions in the Oman ophiolite: New behavior of Cr and chromite. American Mineralogist 99, 28–34. LINK.

31. Gillis, K. M., Snow, J. E., Klaus, A., Abe, N., Adrião, Á. B., Akizawa, N., Ceuleneer, G., Cheadle, M. J., Faak, K., Falloon, T. T., Friedman, S. A., Godard, M., Guerin, G., Harigane, Y., Horst, A. J., Hoshide, T., Ildefonse, B., Jean, M. M., John, B. E., Koepke, J., Machi, S., Maeda, J., Marks, N. E., McCaig, A. M., Meyer, R., Morris, A., Nozaka, T., Python, M., Saha, A. and Wintsch, R. P. (2014) Primitive layered gabbros from fast-spreading lower oceanic crust. Nature, doi:10.1038/nature12778. LINK.

32. Negishi, H., Arai, S., Yurimoto, H., Ito, S., Ishimaru, S., Tamura, A. and Akizawa, N. (2013) Sulfide-rich dunite within a thick Moho transition zone of the northern Oman ophiolite: Implications for the origin of Cyprus-type sulfide deposits. Lithos 164–167, 22-35. LINK.

33. Akizawa, N., Arai, S. and Tamura, A. (2012) Behavior of MORB magmas at uppermost mantle beneath a fast-spreading axis: an example from Wadi Fizh of the northern Oman ophiolite. Contributions to Mineralogy and Petrology 164, 601–625. LINK.

34. Akizawa, N., Arai, S., Tamura, A., Uesugi, J. and Python, M. (2011) Crustal diopsidites from the northern Oman ophiolite: evidence for hydrothermal circulation through suboceanic Moho. Journal of Mineralogical and Petrological Sciences 106, 261–266. LINK.

35.  Akizawa, N. and Arai, S. (2009) Petrologic profile of peridotite layers under a possible Moho in the northern Oman ophiolite: an example from Wadi Fizh. Journal of Mineralogical and Petrological Sciences 104, 389–394. LINK.

Non-reviewed article

1. 秋澤 紀克 (2016) マントルにおけるメルト輸送過程の海嶺方向の多様性：北部オマーンオフィオライトの例. 地球化学 50, 245–246. (博士論文抄録) LINK.

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