2007 Fiscal Year Final Research Report Summary
Cretaceous-Paleogene paleoenvironmental changes in the Yezo basin, Northeast Japan.
| Project/Area Number |
17540441
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | Ibaraki University |
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Principal Investigator |
ANDO Hisao Ibaraki University, COLLAGE OF SCIENCE, PROFESSOR (50176020)
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| Co-Investigator(Kenkyū-buntansha) |
OKADA Makoto Ibaraki University, COLLAGE OF SCIENCE, ASSOCIATE PROFESSOR (00250978)
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| Project Period (FY) |
2005 – 2007
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| Keywords | Paleoenvironment / Cretaceous / Paleocene / Yezo basin / Northeast Janan / biostratieraphy / geohistory / sequence stratigraphy |
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| Research Abstract |
During 2005 to 2007 the Lower Cretaceous to Paleocene Yezo Group in Hokkaido and the Lower Cretaceous Miyako and Upper Cretaceous Kuji groups in the Pacific side of Tohoku, have been surveyed from viewpoints of sedimentary facies, megafossil and pollen biostratigraphy, biofacies and others.
Our survey revealed that six depositional sequences showing shallow-marine coarsening-and showing show-upward facies successions, are traceable in the Campanian Hakobuchi Formation over the Nakagawa area, northern Hokkaido. In the uppermost Albian to Turonian Mikasa Formation distributed in central Hokkaido, a total of 12 fourth-order depositional sequences can be observed in the eastern limb of the Ikushunbetsu- Sorachi anticline area. Each of sequences 20 to 100 m thick constitutes inner to outer shelf bioturbated sandy mudstone in the lower part and shoreface fine/medium massive/hummocky to trough cross-stratified sandstone in the upper. Furthermore, three third-order depositional sequence sets fo
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r both of the Hakobuchi and Mikasa formations, can be identified through stacking patterns of the sequences. Those sequences and sequence sets seem to have formed by repetitive relative sea-level changes influenced by global eustacy, as typically exemplified in the Western Interior Cretaceous in North America. The high-resolution sequence stratigraphic framework enables reconstructing sedimentary history and paleogeography in the western margin of the Yezo basin. Molluscan fossil occurrences and their composition such as ammonoids, inoceramids and other bivalves within each sequence indicate the taphonomic relation between fossil habitats and depositional environments.
In the Santonian to Campanian Kuji Group exposed along the north Sanriku Coast, the stratigraphic variation in pollen flora shows a hinterland paleovegetational change represented by increase of bisaccate pollen. The lateral variation suggests that distribution of plant communities would have been analogous to present-day vegetational variation in several tens kilometer scale. The integrated approach of palynology and sedimentary facies analysis illustrates detailed paleovegetation and fine-scale paleoclimatic fluctuations during Late Cretaceous. Less
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Research Products
(79 results)
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[Journal Article] Carcharodon megalodon tooth set collected from calcareous concretions in the Miocene Kokozura Formation, Takaku Group, Kitaibaraki City, Ibaraki Prefecture, Japan2007
Author(s)
Koda, Y., Koike, W. Ando, H., Uyeno, T. and Usui, K.
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Journal Title
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Shallow to offshore marine bio? and lithofacies changes along basin transect and Cenomanian-Turonian oceanic anoxice vent in Cretaceous Yezo forearc basin, central Hokkaido2006
Author(s)
Ando, , H., ・Hasegawa, , T., ・Hikida, , Y.・Hirano, , H.
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Journal Title
Field Excursion Guidebook for 17th International Sedimentological Congress, Fukuoka.
Pages: 1-45
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Magnetostratigraphy of the Miocene Shiang chronology Muan Formation, northern Tha iland; Implication ror revsed chronology of the earliest Miocene hominoik in Southeasst Asia2006
Author(s)
Suganuma, , Y., ・Hamada, , T., ・Tanaka, S.・Okada, M., ・Nakaya, , H., ・Kunimatsu, , Y., ・ Seagusa, , S.H., ・Nagaoka, , S.・Ratanasthien, , B.
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Journal Title
Palaeogeography, Palaeoclimatology, Palaeoecology 239巻
Pages: 75-86
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Age model, physical properties and paleoceanographic implications of the middle Pleistocene core sediments in the Choshi area, central Japan2006
Author(s)
Kameo, K., ・Okada, M., ・El-Masry, M., ・Hisamitsu, T., ・Satio, S・Nakazato, H., ・Ohkouchi, N., ・Ikehara, M., ・Yasuda, H., ・Kitazato, H., Taira, A.
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Journal Title
The Island Arc 15
Pages: 366-377
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Shallow to offshore marine bio-and lithofacies changes along basin transect and Cenomanian-Turonian oceanic anoxic event in Cretaceous Yezo forearc basin, central Hokkaido2006
Author(s)
Ando, H., Hasegawa, T., Hikida, Y. and Hirano, H.
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Journal Title
In Ito, M., Yagishita, K., Ikehara, K. and Matsuda, eds., Field Excursion Guidebook for 17th International Sedimentological Congress, Fukuoka
Pages: 1-45
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Age model, physical properties and paleoceanographic implications of the middle Pleistocene core sediments in the Choshi area, central Japan2006
Author(s)
Kameo, K.,Okada. M., E-Masry, M., Hisamitsu, T., Saito, S., Nakazato, H., Ohkouchi, N., Ikehara, M., Yasuda, H., Kitazato, H., Taira, A.
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Journal Title
The Island Arc 15
Pages: 366-377
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Magnetostratigraphy of the Miocene Shiang Muan Formation, northern Thailand : Implication for revised chronology of the earliest Miocene hominoid in Southeast Asia2006
Author(s)
Suganuma, Y., Hamada, T., Tanaka, S., Okada. M., Nakaya, H., Kunimatsu, Y., Seagusa, S. H., Nagaoka, S. and Ratanasthien, B.
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Journal Title
Palaeogeography, Palaeoclimatology, Palaeoecology 239
Pages: 75-86
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Ueda, Y., Jenkins, R, G., Ando. H. and Yokoyama, Y., Methane-induced calcareous concretions and chemosynthetic community on an outer shelf of the Joban forearc basin : an example from the Miocene Kokozura Formation, Takaku Group, north of Ibaraki Prefecture, central Japan2005
Author(s)
Ueda, Y., Jenkins, R, G., Ando. H. and Yokoyama, Y.
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Journal Title
Fossils no.78
Pages: 47-58
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Taphonomy and formation processes of the mammal and aves fossil footprints from the Lower Miocene Kitatage Formation, Daigo-machi, Ibaraki Prefecture2007
Author(s)
Ando, H., Koike, W., Koda, Y., Amano, K., Matsubara, N., Naruke, S., Tagiri, M. and Okamura, Y.
Organizer
Annual Meeting of the Sedimentological Society of Japan
Place of Presentation
Tsukuba
Year and Date
2007-03-29
Description
「研究成果報告書概要(欧文)」より
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[Presentation] A cold-seep assemblage associated with authigenic carbonate, Takanabe Formation, Miyazaki Group, Japan2007
Author(s)
Arai, Y., Ishida, H., Majima, R., Kameo, K., Kawagata, S., Kitazato, H., Nakamura, E., Okada, M., Sakai, . S. and Wada, H.
Organizer
Japan Geoscience Union Meeting
Place of Presentation
Chiba
Year and Date
2007-03-24
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Carcbarodon megalodon tooth set collected from calcareous concretions in the Miocene Kokozura Formation, Takaku Group, Kitaibaraki City, Ibaraki Prefecture, Japan2007
Author(s)
Koda, Y., Koike, W ., Ando, H., Uyeno, T. and Usui, T.
Organizer
156th Meeting, Palaeontological of Japan
Place of Presentation
Tokushima
Year and Date
2007-02-03
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Discovery and taphonomy of the Artiodactyls fossil footprints from the Middle Miocene Kitatage Formation, Korofuji, Daigo-machi, Ibaraki Prefecture2006
Author(s)
Koda, Y., Koike, W., Ando, H., Amano, K., Tagiri, M. and Okamura, Y.
Organizer
155th Meeting of the Palaeontological Society of Japan, Feb. Annual Meeting of the Sedimentological Society of Japan
Place of Presentation
Kyoto Osaka
Year and Date
20060202-0326
Description
「研究成果報告書概要(欧文)」より
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