Recovery from mass extinction and adaptive radiation of Paleozoic and Mesozoic marine biotic community in Southeast Asia
Project/Area Number |
19K04059
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 17050:Biogeosciences-related
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Research Institution | Kumamoto University |
Principal Investigator |
Komatsu Toshifumi 熊本大学, 大学院先端科学研究部(理), 教授 (40336201)
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Co-Investigator(Kenkyū-buntansha) |
高嶋 礼詩 東北大学, 学術資源研究公開センター, 教授 (00374207)
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Project Period (FY) |
2019-04-01 – 2023-03-31
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Project Status |
Completed (Fiscal Year 2022)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | 大量絶滅 / 適応放散 / 生層序 / 古環境 / 地質学 / 古生物学 / 堆積学 / ベトナム / 地質 / 地質年代 / 古生物 / 堆積環境 / 回復 / オルドビス紀 / シルル紀 / デボン紀 / 三畳紀 / 海生生物 |
Outline of Research at the Start |
ベトナムのカンブリア系~三畳系で地質調査を行い,大量絶滅などのイベント層を記録しているセクションで,アンモナイトや二枚貝,筆石,コノドントなどの化石と生層序,化学分析などの手法を用いて,地質年代や大量絶滅,海洋無酸素事変などの地質学的なイベントを明らかにし,さらに堆積相解析を用いて堆積環境を復元した上で化石の記載や底生動物化石群集の識別および生息域の復元を行なう.その後,これらの結果を地質年代や堆積環境,海域ごとに比較して大量絶滅から回復,適応放散のパターンとそれらの原因を明らかにすることが研究の最終目的である.
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Outline of Final Research Achievements |
Middle to Upper Paleozoic non-marine “Old Red Sandstone” and shallow marine deposits are widely distributed in the northern Vietnam. We collected megafossils such as bivalves, gastropods and many fragments of fish bones and microfossils, ostracods and pollens from the upper part of the Si Ka Formation mainly composed of “Old Red Sandstone”. The Upper Devonian conodonts are abundantly found in the Devonian to Carboniferous Toc Tat Formation. In this study, we have mainly studied microfossils (pollens, ostracods and conodonts) from the northern part of Dong Van area, Ha Giang Province and Lower Triassic radiolarians from the Bac Thuy Fm., Lang Son Province.
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Academic Significance and Societal Importance of the Research Achievements |
北部ベトナムに分布しているシーカー層は,アジアを代表する“旧赤色砂岩”を主体とする地層で1800年代から下部デボン系とされていた.しかし,本研究でシーカー層の最上部から後期シルル紀の胞子化石を抽出したことによって,この“旧赤色砂岩”がシルル系であることが明らかになった.また,トックタット層の下部から大量のコノドント化石を採取した結果,5大大量絶滅の1つとして知られている上部ケルワッサーイベント層が挟まれている可能性が高いことが明らかになった.これらの研究成果は,ドンバンカルストジオパーク内で得られたもので,今後のジオパークやベトナム国立自然博物館の展示などで紹介していく予定である.
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Report
(5 results)
Research Products
(39 results)
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[Journal Article] Ostracods from the upper Silurian Si Ka Formation, northern Vietnam, and their paleobiogeographical significance.2023
Author(s)
Williams, M., Komatsu, T., Nguyen, D. P., Siveter, J. D., McGairy, A., Bush, H., Goodlall, H. R., Harvey, P. H. T., Stocker, P. C., Legrand, J., Yamada, T., Miller, G. C.
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Journal Title
Paleontological Research
Volume: 27
Pages: 261-276
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] A new genus and species of brittle star (Ophiuroidea: Ophioleucida) from the Upper Triassic (Carnian) of northern Vietnam.2023
Author(s)
Ishida, Y., Ha, T.T., Thuy, B., Numberger-Thuy, D.L., Komatsu, T., Doan, D.H., Nguyen, T.M., Shigeta, Y., Fujita, T.
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Journal Title
Paleontological Research
Volume: 27
Pages: 147-159
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Latentifistularia and other radiolarian species from the lower Smithian (Lower Triassic) Lang Son Formation, NE Vietnam.2022
Author(s)
Takahashi, O., Maekawa, T., Dumitrica, P., Nguyen, D.P., Komatsu, T.
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Journal Title
Revue de micropalaeontologie
Volume: 75
Pages: 100610-100610
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] A new specimen of Anthracokeryx naduongensis (Mammalia, Artiodactyla, Anthracotheriidae) from the Eocene Na Duong Formation, northeastern Vietnam.2022
Author(s)
Tsubamoto, T., Tsuihiji, T., Dong P. P., Dinh H. D., Egi, N., Komatsu, T.
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Journal Title
Jour. Geol. Soc. Japan
Volume: 128
Pages: 245-251
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Late Ordovician (Katian) graptolites and shelly fauna from the Phu Ngu Formation, north-east Vietnam.2021
Author(s)
Wong Hearing, T. W., Williams, M., Rushton, A.W.A., Zalasiewicz, J., Komatsu, T., Stocker, C.P., Harvey, T. H. P., Niko, S., Doan, H.D., Trinh, T.H., Nguyen, B.H., Nguyen, M.T.
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Journal Title
Paleontological Research
Volume: 25
Pages: 41-58
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Implications of an early land plant spore assemblage for the late Silurian age of the Si Ka Formation, northern Vietnam2021
Author(s)
Legrand, J., Yamada, T., Komatsu, T., Williams, M., Harvey, T., Vandenbroucke, T.R.A., Backer, D.T., Bush, H., Nguyen, D. P., Doan, D. H., Nguyen, B.H.
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Journal Title
Annales de Palaeontologie
Volume: 107
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Ostracods had colonized estuaries by the late Silurian2021
Author(s)
McGairy, A., Komatsu, T., Williams, M., Harvey, T. H. P., Miller, C. G., Nguyen, D. P., Legrand, J., Yamada, T., Siveter, D. J., Bush, H., Stocker, C. P.
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Journal Title
Biology Letters
Volume: 17
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Late Ordovician (Katian) graptolites and shelly fauna from the Phu Ngu Formation, north-east Vietnam2021
Author(s)
Wong Hearing, T. W., Williams, M., Rushton, A., Zalasiewicz, J., Komatsu, T., Stocker, C., Harvey, T. H. P., Niko, S., Doan, D. H., Trinh, T. H., Nguyen, B. H., Nguyen, T. M.
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Journal Title
Paleontological Research
Volume: 25
Issue: 1
Pages: 41-62
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Implications of an early land plant spore assemblage for the late Silurian age of the Si Ka Formation, northern Vietnam2021
Author(s)
Legrand, J., Yamada, T., Komatsu, T., Williams M., Harvey, T., Backer, T. D., Vandenbroucke, T. R. A., Nguyen, D. P., Doan, D. H., Nguyen, B. H.
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Journal Title
Annales De Paleontologie
Volume: accepted
Pages: 00-00
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Variations in trace elements, isotopes, and organic geochemistry during the Hangenberg Crisis, Devonian-Carboniferous transition, northeastern Vietnam2020
Author(s)
Shizuya, A., Oba, M., Ando, T., Ogata, Y., Takashima, R., Nishi, H. Komatsu, T., Nguyen, D.P.
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Journal Title
Island Arc
Volume: 29
Issue: 1
Pages: 1-20
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Late Ordovician (Katian) graptolites and shelly fauna from the Phu Ngu Formation, north-east Vietnam2020
Author(s)
Wong Hearing, T. W., Williams, M., Rushton, A.W.A., Zalasiewicz, J., Komatsu, T., Stocker, C.P., Harvey, T. H. P., Niko, S., Doan, H.D., Trinh, T.H., Nguyen, B.H., Nguyen, M.T.
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Journal Title
Paleontological Research
Volume: 00
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] A new specimen of the Anthracotheriidae (Mammalia, Artiodactyla) from the upper Eocene of Na Duong Coal Mine, northern Vietnam2021
Author(s)
Tsubamoto, T., Tsuihiji, T., Pha Dong Phan, Dinh Hung Doan, Egi, N., Komatsu, T.
Organizer
第21回日本地質学会四国支部講演会
Related Report
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