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Current Position English/Japanese（日本語）
Associatte professor
@ Department of Earth and Planetary Science, University of Tokyo, Japan
Field of study:
Geology (Paleoclimatology, Paleoceanography, Sedimentology, Cyclostratigraphy, Geochemistry, Geochronology)
( Permian/Triassic deep-sea sequence in New Zea Land→)
Research Interests
・Climate changes, Earth system dynamics and biotic evolution/extinction driven by astronomical forcing.
・Recovery process from mass extinctions (end-Devonian, Carboniferous, Permian-Triassic, Triassic/Jurassic), glaciation (Carboniferous-Permian, Jurassic-Cretaceous) and Oceanic Anoxic Events (Permian-Triassic, Toarcian, and Cretaceous).
・Geochronology (Cyclostratigraphy of marine and terrestrial sequences. Astronomical time scale.)
・Chaotic evolution of Solar Planets (Earth-Mars secular resonance, Earth-Moon gravitational interaction).
・Dinosaur Evolution linked with Climate changes
Publication list ★Google Scholar
peer review
34. Saito R., Wörmer, L., Taubner, H., Kaiho, K., Takahashi, S., Tian, L., Ikeda, M., Summons, R., Hinrichs, K., 2023, Centennial scale sequences of environmental deterioration preceded the end-Permian mass extinction. Nature communications, in press.
33. Hasegawa, H., Katsuta, N., Muraki, Y., Heimhofer, U., Ichinnorov, N., Asahi, H., Ando, H., Yamamoto, K., Murayama, M., Ohta, T., Yamamoto, M., Ikeda, M., Ishikawa, K., Kuma, R., Hasegawa, T., Hasebe, N., Nishimoto, S., Yamaguchi, K., Abe, F., Tada, R., and Nakagawa, T. (2022). Decadal–centennial-scale solar-linked climate variations and millennial-scale internal oscillations during the Early Cretaceous. Scientific Reports, 12(1), 21894. https://www.nature.com/articles/s41598-022-25815-w
32. Matsuzaki, K., Ikeda, M., & Tada, R.* (2022). Weakened Pacific Overturning Circulation, winter monsoon dominance and tectonism re-organized Japan Sea paleoceanography during the Late Miocene Global Cooling. Scientific Report,
https://www.nature.com/articles/s41598-022-15441-x
31. Nakagawa, Y., Legrand, J., Bôle, M., Hori, R.S, Kuroda, J., Hasegawa, H., & Ikeda, M.,* (2022). Terrestrial and marine organic matter evidence from a Cretaceous deep-sea chert of Japan: Implications for enhanced hydrological cycle during the Aptian OAE 1a. Global and Planetary Change, 103886.
https://doi.org/10.1016/j.gloplacha.2022.103886
30. Bôle, M., Ushikubo, T., Hori, R. S., Baumgartner, P. O., Nakai, Y., & Ikeda, M.,* (2022). Si isotope ratio of radiolaria across Triassic–Jurassic transition in a pelagic deep-sea bedded chert (Inuyama, Japan). Global and Planetary Change, 103882.
https://doi.org/10.1016/j.gloplacha.2022.103882
29. Cho, T., Ikeda, M., Ohta, T., 2022, Increased terrigenous supply to the pelagic Panthalassa Superocean across the Carnian Pluvial Episode: A possible link with extensive aridification in the Pangean interior? Frontiers in Earth Science. https://doi.org/10.3389/feart.2022.897396
28. Kemp D., Shen, J., Cho, T., Algeo, T., Ikeda, M., 2022, Deep-ocean anoxia across the Pliensbachian-Toarcian boundary and the Toarcian Oceanic Anoxic Event in the Panthalassic Ocean. Global Planetary Change, in press. DOI 10.1016/j.gloplacha.2022.103782
27. Kaiho K., Tanaka D., Richoz S., Jones D.S., Saito R., Kameyama, D. Ikeda, M., Takahashi, S., Aftabuzzaman Md., Fujibayashi M., 2022. Volcanic temperature changes modulated volatile release and climate fluctuations at the end-Triassic mass extinction. Earth and Planetary Science Letters, 579, 117364. DOI 10.1016/j.epsl.2021.117364
26. BÔLE, M., Ikeda, M., BAUMGARTNER, P. O., BOUVIER, A. S., & KUKOČ, D. 2020. Oxygen isotope analysis of Mesozoic radiolarites using SIMS. Bulletin of the Geological Survey of Japan, 71, 355-393.
25. Ikeda, M., Ozaki, K., Legrand, J., 2020, Impact of 10-Myr scale monsoon dynamics on Mesozoic climate and ecosystems. Scientific Reports, 10. 11984. 10.1038/s41598-020-68542-w
24. Maximilien BÔLE, Ikeda, M.,Peter O. BAUMGARTNER, HORI S. Rie and Anne-Sophie BOUVIER, 2020, SIMS analysis of Si isotope for radiolarian test in Mesozoic bedded chert, Inuyama, central Japan. Bulletin of the Geological Survey of Japan. 71, 331-353.
23. Ikeda, M., and Tada R., 2020. Reconstruction of the chaotic behaviour of the Solar System from geologic records. Earth and Planetary Science Letters, 537, 161-168
22. Kuma, R., Hasegawa, H., Yamamoto, K., Yoshida, H., Whiteside, J.H., Katsuta, N., Ikeda, M., 2019, Biogenically induced bedded chert formation in the alkaline palaeo-lake of the Green River Formation. Scientific Reports, 9, 16623.
21. Ikeda, M., Hori S. R., Ikehara, M., Miyashita, R., Chino, M., Yamada, K., 2018, Carbon cycle dynamics linked with Karoo-Ferrar volcanism and astronomical cycles during Pliensbachian-Toarcian (Early Jurassic). Global Planetary Change, 440, 725-733.
20. Kitamura, A., Ito, M., Ikuta, R., Ikeda, M., 2018. Using molluscan assemblages from paleotsunami deposits to evaluate the influence of topography on the magnitude of late Holocene mega-tsunamis on Ishigaki Island, Japan. Progress in Earth and Planetary Science, in press.
18. Ikeda, M., Tada, R., Ozaki, K., 2017 Astronomical pacing of the global silica cycle recorded in Mesozoic bedded cherts. Nature Communications doi:10.1038/ncomms15532
17. Ikeda, M., Baumgartner P, Bole M., 2016 Orbital-scale changes in redox condition and biogenic silica/detrital fluxes of the middle Jurassic radiolarite in Tethys (Sogno, Lombardy, N-Italy): Possible link with glaciation? Palaeogeography, Palaeoclimatology, Palaeoecology, 440, 725-733.
16. Kitamura A., Ohashi Y., Ishibashi H., Miyairi Y., Yokoyama Y., Ikuta R., Ito Y., Ikeda M., Shimano T., 2016. Holocene geohazard events on the southern Izu Peninsula, central Japan. Quaternary International. 397, 541-554.
15. Ikeda, M., Hori S. R., Okada Y., Nakada R., 2015. Volcanism and deep-sea acidification across the end-Triassic extinction event. Palaeogeography, Palaeoclimatology, Palaeoecology, 440, 725-733.
14. Soda, K., Onoue, T., Ikeda, M., 2015. Cyclostratigraphic examination of Middle Triassic (Anisian) bedded chert in the Chichibu Belt from Tsukumi area, eastern Kyushu, Japan. Jour. Geol. Soc. Japan. in press.
13. Okada Y., Hori S. R., Ikeda M., and Ikehara M., 2015. Geochemical study of Panthalassa deep-sea sedimentary rocks across the Triassic-Jurassic boundary. News of Osaka Micropaleontologists, 15, 219-232.
12. Kameda, J., Kouketsu, Y., Shimizu, M., Yamaguchi, A., Hamada, Y., Hamahashi, M., Koge, H., Fukuchi, R., Ikeda, M., Kogure, T., Kimura., G., 2014. The influence of organic–rich shear zones on pelagic sediment deformation and seismogenesis in a subduction zone. Journal of Mineralogical and Petrological Sciences. 109, 228-238.
11. Ikeda, M., and Hori S. R., 2014. Effects of Karoo-Ferrar Volcanism and Astronomical Cycles on the Toarcian Oceanic Anoxic Events (Early Jurassic). Palaeogeography, Palaeoclimatology, Palaeoecology, 410, 134-142.
10. Ikeda, M., and Tada R., 2014. A 70 million year astronomical time scale of the deep-sea sequence (Inuyama, Japan): Implication for Triassic-Jurassic geochronology. Earth and Planetary Science Letters, 399, 30-43.
9. Ikeda M., 2013. Astrochronology and orbital tuning using the Milankovitch cycles: development on cyclostratigraphy. Monthly Earth, 51-58 (in Japanese).
8. Ikeda M., 2013. Cyclostratigraphy of the Triassic to Jurassic deep-sea sequences in Japan: Frequency modulation for stratigraphic correlation. The Triassic System. New Mexico Museum of Natural History and Science, Bulletin, 61, 259-267.
7. Kaiho K., Yatsua S., Oba M., Gorjan P., Casier J. G., Ikeda, M., Chen A., A forest fire and soil erosion event during the Late Devonian mass extinction, Palaeogeography, Palaeoclimatology, Palaeoecology, 392, 272–280.
6. Ikeda, M., Tada, R., 2013, Long-period astronomical cycles from the Upper Triassic to Lower Jurassic bedded chert sequence, Inuyama, Japan; Geologic evidence for the chaotic evolution of Solar Planets. Earth, Planets and Space, 65, 351-361.
5. Sakuma, H. Ikeda, M., Tada, R., Kashiyama, N., Ohkouchi, N., O. Ogawa, S. Watanabe E. Tajika and, S. Yamamoto, 2012, High-resolution lithostratigraphy and organic carbon isotope stratigraphy of the Lower Triassic pelagic sequence in central Japan, The Island Arc. 21, 79-100 .
4. Ikeda, M., Sakuma, H., Tada, R., Takahashi, S., 2011, Enhanced chemical weathering during early Triassic in response to the colllapse of terrestrial ecosystem after the end-Permian mass extinction, Mineralogical Magazine, 75, 1080.
3. Ikeda, M., Tada, R., Sakuma, H., 2010a., Astronomical cycle origin of bedded chert: a middle Triassic bedded chert sequence, Inuyama, Japan, Earth and Planetary Science Letters, 297, 369-378.
2. Ikeda, M., Tada, R., Karasuda, A., Sakuma, H., 2010b., Long-period Astronomical Cycles from the Upper Triassic to Lower Jurassic Bedded Chert sequence: Implications for Jurassic Cyclostratigraphy, Earth Science Frontiers, 17, 112-113.
1. Ikeda, M., Yamaji, A., 2008., The timing of formation of the Higashiyama Anticline, Niigata Prefecture, Central Japan: Constraints from Paleocurrent and Geologic Structure. Jour. Geol. Soc. Japan, 114, 405-414. [PDF] (Geologic map of Ikeda&Yamaji,2008)
Research and Professional Experiences:
2020-; The University of Tokyo, Associate Professor
2016-18: Columbia University, Research fellow
2016: Southampton University, Research fellow
2014: Lausanne University, Visiting professor
2014-2019: Shizuoka University, Assistant Professor
2012-2014: Ehime University, JSPS Postdoctoral Fellow (PD)
2011: Columbia University, Research fellow
2009-2012: The University of Tokyo, JSPS Research Fellow (DC1)
2010; The University of Tokyo, Teaching Assistant (Geology)
2009; The University of Tokyo, Teaching Assistant (Geology)
Awards:
2007: Outstanding Presentation Award (Ikeda and Yamaji, 2008; The Geological Society of Japan)
2008: Outstanding Poster Award (Ikeda et al., 2010; The Geological Society of Japan)
2009: Outstanding Student Paper Award (Master thesis; The University of Tokyo)
2010: The Best Student Poster Award （The 12th Meeting of the International Association of Radiolarian Paleontologists the Micropalaeontological Society）
2011: Honor (The Geological Society of Japan)
2013: The Paper Award （Ikeda et al., 2010; The Sedimentological Society of Japan）
2013: The Best Aural Presentation Award （The Sedimentological Society of Japan）
2016年：The Best Student Poster Award (The 15th Meeting of the International Association of Radiolarian Paleontologists the Micropalaeontological Society)
Grants: https://nrid.nii.ac.jp/en/nrid/1000010635882/
2014-2016: Grant-in-Aid for Young Scientists B, JSPS.
「Carbon cycle dynamics driven by long-term insolation cycles」
2014-2016: Fondation Herbette @Lausanne University (Switzerland)
「Cyclostratigraphy of Mesozoic radiolarites from Panthalassa and Tethys - Towards a global oceanic fertility and climate record.」
2012-2014: JSPS Postdoctoral Fellow (PD), JSPS.
「Continental weathering as a CO2 reduction process after the mass extinctions」
2012–2013: Fujiwara Natural History Foundation.
「Recovery process from the Triassic/Jurassic boundary mass extinction based on the high-resolution correlation between terrestrial-pelagic sequences」
2009–2012: JSPS Research Fellow (DC1), JSPS.
「Interaction between the surface system and ecosystem during the recovery process from the Permian/Triassic boundary mass extinction 」
2011 : Overseas Internship Program for Outstanding Young Earth and Planetary Researchers. (Columbia University, Lamont Doherty Earth Observatory, (Prof. Paul Olsen)
「Formation mechanism of bedded chert: testing the "megamonsoon hypothesis"」
2011: Research grant for "Field survey for the cyclostratigraphy of Triassic-Cretaceous bedded chert" ( Kamuikotan, Japan). Univ. of Tokyo.
2010: Travel grant for the 8th International Congress on the Jurassic System (Sichuan, China, 2010.8) GCOE. Report
2009: Travel grant for IODP INVEST (IODP New Ventures in Exploring Scientific Targets,Bramen, Germany 2009,9, 23-25. ) J-DESC.
Proposal / Report
Ikeda M., Izumi K. (2010) The International Congress on the Jurassic System (August 9-13, Shehong of Suinig, Sichuan, China) report. Jour. Geol. Soc. Japan, 114, 405-414
Ikeda M., Tada R., Hasegawa H. (2009) Long periodicity (3.6 Myr) Milankovitch cycle and its potential impacts on the Earth system denamics, IODP INVEST White Paper.
Presentation:
2011
IKEDA, M., TADA, R., KARASUDA, ., YAMAMOTO, S., NOZU, T.,
2011) Summer monsoon intensity as a recording mechanism of the astronomical rhythm in bedded chert. Japan Geoscience Union (Makuhari, Japan, 2012.5) Oral．a
IKEDA M., H. Sakuma, Tada R., and Takahashi S., Enhanced chemical weathering during early Triassic in response to the collapse of terrestrial ecosystem after the end-Permian mass extinction. Goldschmidt (Prague, Czech, 2011, 8, 17). Oral.Abstract
IKEDA M., Paul E. Olsen, Tada R., and Karasuda A.,
Long-period astronomical cycles detected form Triassic-Jurassic bedded chert sequence and lacustrine Newark supergroup: implications for the long-term Solar system behavior. Japan Geoscience Union (Makuhari, Japan, 2011.5) Oral．
IKEDA M., Paul E. Olsen, Tada R., and Karasuda A., 8-myr cycle detected from the sedimentary rhythms of bedded chert and terrestrial dry-wet cycle: evidences from the upper Triassic to lower Jurassic bedded chert sequence and Newark Supergroup. Japan Geoscience Union (Makuhari, Japan, 2011.5) poster．
2010
IKEDA M., Tada R., Karasuda A., and Sakuma, H., Long period astronomical cycles from the Upper Triassic to lower Jurassic Bedded chert sequence: implications for Jurassic cyclostratigraphy. The 8th International Congress on the Jurassic System (Sichuan, China, 2010.8) ．Oral
Abstract
IKEDA M., Tada R., and Sakuma H., Milankovitch Cycles Detected in the middle Triassic Bedded Chert in Inuyama Area, and its Relation with Deep Sea Redox Changes. Japan Geoscience Union (Makuhari, Japan, 2010.5) Oral.
Sakuma H.
, Tada R., and IKEDA M., Bottom-water oxygenation condition and surface-water productivity during the Early Triassic based on pelagic sequence in Inuyama. Japan Geoscience Union (Makuhari, Japan, 2010.5) Oral.
2009
IKEDA M., Hitoshi H. and Tada R., Milankovith origin of sedimentary rhythms of bedded chert: A Megamonsoon hypothesis. IODP INVEST, (Bramen, Germany 2009,9, 23-25. ) Poster.Abstract
IKEDA M., Sakuma, H. and Tada R., High-resolution correlation of the late Triassic (Raetian) to the early Jurassic (Toarcian) between Pelagic sequence of Panthalassa and terrestrial sequence of Pangea using Milankovitch cycles. American Geophysical Union Fall Meeting (San Francisco, USA, 2009.12) ．Poster. Abstract
IKEDA M., Sakuma, H., and Tada R. Milankovitch cycles detected from the sedimentary rhythms of bedded chert and its relation to diversity dynamics of radi-olarian fossils. The 12th Meeting of the International Association of Radiolarian Paleontologists the Micropalaeontological Society 2009,9,14-17 Nanjing, China. Poster. Abstract（The Best Student Poster Award ）
Sakuma, H., Tada, R, IKEDA M., Kashiyama, Y, Ohkouchi, N, Ogawa, N O, Watanabe, S, Tajika, E, Yamamoto, S High-resolution Reconstruction of the Bottom-water Oxygenation Condition of Panthalassa During the Early Triassic Chert Gap Based on Sediment Fabric Analysis of Pelagic Sequence in Central Japan. The 12th Meeting of the International Association of Radiolarian Paleontologists the Micropalaeontological Society. 2009,9,14-17. Nanjing, China．Aural.. Abstract
IKEDA M., Hitoshi H. and Tada R., Milankovith origin of sedimentary rhythms of bedded chert: A Megamonsoon hypothesis. IODP INVEST, (Bramen, Germany 2009,9, 23-25. ) Poster. Abstract
IKEDA M., Sakuma, H. and Tada R., High-resolution correlation of the late Triassic (Raetian) to the early Jurassic (Toarcian) between Pelagic sequence of Panthalassa and terrestrial sequence of Pangea using Milankovitch cycles. American Geophysical Union Fall Meeting (San Francisco, USA, 2009.12) ．Poster. Abstract
2008
IKEDA M., Sakuma, H. and Tada R., Milankovitch cycles detected in the middle Triassic bedded chert (Inuyama, Japan) and its relation with bottom water oxygenation changes, American Geophysical Union Fall Meeting (San Francisco, USA, 2008.12) ．Poster. Abstract
IKEDA M., Sakuma, H .and Tada R., High-resolution and continuous reconstruction of the lower-middle Triassic pelagic sequence (Inuyama, Japan): Implication for the productivity recover process from end-Permian mass extinction, European Geosciences Union General Assembly (Viena, Austria, 2008.4)．Poster. Abstract
Sakuma, H., Tada, R., IKEDA M., Kashiyama, Y, Ohkouchi, N, Ogawa, N O, Watanabe, S, Tajika, E, Yamamoto, S, High-resolution Reconstruction of the Bottom-water Oxygenation Condition of Panthalassa During the Early Triassic Based on Sediment Fabric Analysis of Pelagic Sequence in Central Japan, American Geophysical Union Fall Meeting (San Francisco, USA, 2008.12) ．Poster. Abstract
Symposium:
IKEDA M., Astronomical cycle and Earth system dynamics recorded in the rhythms of the Mesozoic deep sea sedimentary rock. 6th Symposium on the Science by Astronomical Earth Observatory . (2011.10) Oral.
Degree:
Ph.D. (2012): Department of Earth and Planetary Science, Tokyo University (Supervisor: Prof. R. Tada)
Title: Astronomical cycle recorded in the rhythms of the Mesozoic bedded chert and its relation with the global silica cycle
M.D. (2009): Department of Earth and Planetary Science, Tokyo University (Supervisor: Prof. Tada R.)
Title: Milankovitch cycle detected from the sedimentary rhythms of bedded chert, Inuyama, Japan, and its relation to climate change
B.D. (2004): Department of Earth and Planetary Science, Kyoto University (Supervisor: Prof. Yamaji A.)
Title:The timing of formation of the Higashiyama Anticline, Niigata Prefecture, Central Japan: Constraints from Paleocurrent and Geologic Structure
Professional Society Memberships:
Japan Geoscience Union; American Geophysical Union; European Geoscience Union; Geological Society of Japan; Paleontological Society of Japan; Sedimentological Society of Japan.
Key word
Bedded chert，sedimentary rhythm，cyclostratigraphy, spectral analysis, wavelet, S-transform, orbital cycle, precession, obliquity, eccentricity, secular resonance, chaos, lamina, bioturbation, redox, anoxia, euxinia, oceanic anoxic event, pelagic, deep sea, lacustrine, chemical weathering, CO2, O2, atmosphere, global warming, Silicate cycle, eolian dust, monsoon, Pangea, Panthalassa, Megamonsoon, dry-wet, warming-cooling, fossil, conodont, radiolarian, pollen, plant, vertebrate, foot plint, insect, diversity, fault slip analysis, depth rank, Inuyama, Kurusu, Katsuyama, Momotaro-shrine, Kagamigahara, Ryugatake, Tsukumi, Kuzuu, Kamuikotan, Nagaoka, Kusu, Mine, Fransiscan, Arrow Rocks, Waiheke (New Zea Land), Newark, Hartford, Fundy (U.S.A.)
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