Toward creation of Chemical paleontology

• Project/Area Number: 23654176
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Stratigraphy/Paleontology
• Research Institution: The University of Tokyo
• Principal Investigator: KOMIYA Tsuyoshi 東京大学, 大学院・総合文化研究科, 准教授 (30361786)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 放射光 X 線 Micro-CT / 化学古生物学 / カンブリア紀 / カンブリア爆発 / 後生動物化石 / 微小硬骨格動物化石 / 放射光X線Micro-CT / SPring-8 / 微小硬骨格化石 / 化石三次元像解析 / エディアカラ紀 / 最古後生動物化石 / 後生動物出現

Research Abstract

It is difficult to investigate the origins of fossils whose structures are very common or have no modern equivalents based on the morphology. Recently, it is controversial whether globular fossils in the Ediacaran originate from the oldest animal embryos or colonized large bacteria. We carried out in-situ FT-IR analyses of the oldest animal embryo fossils and found organic molecular evidence for the eukaryotes, namely metazoans. We conducted synchrotron X-ray Micro-CT analyses of the oldest cnidarian polyp fossils to observe the internal structures. We found clear pentaradial structures inside, suggesting the early Cnidaria did not have radial structures but bilateral structures.

Research Products

• [Journal Article] Reproductive strategy of the bradoriid arthropod Kunmingella douvillei from the Lower Cambrian Chengjiang Lagerstatte (2013)
  • Author(s): Duan, Y., Han, J., Fu, D., Zhang, X., Yang, X., Komiya, T., Shu, D.
  • Journal Title: South China. Gondwana Research Volume: (in press)
• [Journal Article] Micro-FTIR spectroscopy of Ediacaran embryo-like microfossils from Doushantuo Formation in Weng'an area. (2013)
  • Author(s): Igisu, M., Komiya, T., Kawashima, M., Nakashima, S., Ueno, Y., Maruyama, S., Takai, K.
  • Journal Title: Gondwana Research Volume: (in press)
• [Journal Article] Irreversible change of the oceanic carbon cycle in the earliest Cambrian: High-resolution organic and inorganic carbon chemostratigraphy in the Three Gorges area (2013)
  • Author(s): Ishikawa, T., Ueno, Y., Shu, D., Li, Y., Han, J., Guo, J., Yoshida, N., Komiya, T.
  • Journal Title: South China.Precambrian Research Volume: 225 Pages: 190-208
• [Journal Article] Carbon and oxygen isotope chemostratigraphies of the Yangtze platform, South China: Decoding temperature and environmental changes through the Ediacaran (2013)
  • Author(s): Tahata, M., Ueno, Y., Ishikawa, T., Sawaki, Y., Murakami, K., Han, J., Shu, D., Li, Y., Guo, J., Yoshida, N., Komiya, T.
  • Journal Title: Gondwana Research Volume: 23 Pages: 333-353
• [Journal Article] Molecular fossils extracted from the Early Cambrian section in the Three Gorges area (2013)
  • Author(s): Yamada, K., Ueno, Y., Yamada, K., Komiya, T., Han, J., Shu, D., Yoshida, N., Maruyama, S.
  • Journal Title: South China. Gondwana Research Volume: (in press)
• [Journal Article] Micro-FTIR spectroscopy of Ediacaran embryo-like microfossils from Doushantuo Formation in Weng’an area (2013)
  • Author(s): Igisu, M.
  • Journal Title: Gondwana Research Volume: 23
  • Peer Reviewed
• [Journal Article] Reproductive strategy of the bradoriid arthropod Kunmingella douvillei from the Lower Cambrian Chengjiang Lagerstätte, South China (2013)
  • Author(s): Duan, Y.
  • Journal Title: Gondwana Research Volume: 23
  • Peer Reviewed
• [Journal Article] Irreversible change of the oceanic carbon cycle in the earliest Cambrian: High-resolution organic and inorganic carbon chemostratigraphy in the Three Gorges area, South China (2013)
  • Author(s): Ishikawa, Tomoko
  • Journal Title: Precambrian Research Volume: 225 Pages: 190-208
  • Peer Reviewed
• [Journal Article] High-temperature, high-pressure granulites (retrogressed eclogites) in the central region of the Lewisian, NW Scotland: Crustal-scale subduction in the Neoarchaean (2013)
  • Author(s): Sajeev, K.
  • Journal Title: Gondwana Research Volume: 23 Pages: 526-538
  • Peer Reviewed
• [Journal Article] Recycled crustal zircons from podiform chromitites in the Luobusa ophiolite, southern Tibet (2013)
  • Author(s): Yamamoto, S.
  • Journal Title: Island Arc Volume: 21 Pages: 89-103
  • Peer Reviewed
• [Journal Article] Micro-FTIR spectroscopy of Ediacaran embryo-like microfossils from Doushantuo Formation in Weng’an area (2013)
  • Author(s): Ishikawa, Tomoko
  • Journal Title: Gondwana Research Volume: 23
  • Peer Reviewed
• [Journal Article] Molecular fossils extracted from the Early Cambrian section in the Three Gorges area, South China (2013)
  • Author(s): Yamada, K.
  • Journal Title: Gondwana Research Volume: 23
  • Peer Reviewed
• [Journal Article] The anomalous Ca cycle in the Ediacaran ocean: Evidence from Ca isotopes preserved in carbonates in the Three Gorges area, South China (2013)
  • Author(s): Sawaki, Yusuke
  • Journal Title: Gondwana Research Volume: 23
  • Peer Reviewed
• [Journal Article] Depth variation of carbon and oxygen isotopes of calcites in Archean altered upper oceanic crust: Implications for the CO2 flux from ocean to oceanic crust in the Archean (2012)
  • Author(s): Shibuya, Takazo
  • Journal Title: Earth and Planetary Science Letters Volume: 32-322 Pages: 64-73
  • Peer Reviewed
• [Journal Article] In situ iron isotope analyses of pyrite and organic carbon isotope ratios in the Fortescue Group: Metabolic variations of a Late Archean ecosystem (2012)
  • Author(s): Yoshiya, Kazumi
  • Journal Title: Precambrian Research Volume: 212-213 Pages: 169-193
  • Peer Reviewed
• [Journal Article] Continental recycling and true continental growth (2011)
  • Author(s): Komiya, Tsuyoshi
  • Journal Title: Russian Geology and Geophysics Volume: 52 Pages: 1516-1529
  • Peer Reviewed
• [Journal Article] Geochemistry, petrogenesis and geodynamic origin of basalts from the Katun’ accretionary complex of Gorny Altai (southwestern Siberia) (2011)
  • Author(s): Safonova, Inna Yu.
  • Journal Title: Russian Geology and Geophysics Volume: 52 Pages: 421-442
  • Peer Reviewed
• [Journal Article] A new concept of continental construction in the Central Asian Orogenic Belt (compared to actualistic examples from the Western Pacific) (2011)
  • Author(s): Safonova, Inna Yu.
  • Journal Title: Episodes Volume: 34 Pages: 186-196
  • Peer Reviewed
• [Journal Article] Geochemical diversity in oceanic basalts hosted by the Zasur'ya accretionary complex, NW Russian Altai, Central Asia: Implications from trace elements and Nd isotopes (2011)
  • Author(s): Safonova, Inna Yu.
  • Journal Title: Journal of Asian Earth Sciences Volume: 42 Pages: 191-207
  • Peer Reviewed
• [Journal Article] Depth variation of carbon and oxygen isotopes of calcites in Archean altered upper oceanic crust: Implications for the CO2 flux from ocean to oceanic crust in the Archean (2011)
  • Author(s): Shibuya, T.
  • Journal Title: Earth and Planetary Science Letters Volume: 321-322 Pages: 64-73
  • Peer Reviewed
• [Journal Article] Water content of the mantle xenoliths from Kimberley and implications for explaining textural variations in cratonic root (2011)
  • Author(s): Katayama, I.
  • Journal Title: Geological Journal Volume: 46 Pages: 173-182
  • Peer Reviewed
• [Journal Article] 四国中央部別子地域三波川帯の超マフィック層状岩体にみられる変形構造：ブーディンおよびデュープレックス様累重 (2011)
  • Author(s): 山本啓司
  • Journal Title: 地質学雑誌 Volume: 117
  • Peer Reviewed
• [Presentation] Ion Microprobe U-Pb Dating and Sr Isotope Measurement of a Protoconodont (2013)
  • Author(s): Sano, Y., Toyoshima, K., Shirai, K., Takahata, N., Sato, T., Komiya, T.
  • Organizer: Goldschmidt Conference 2013
  • Place of Presentation: Florence, Italy
• [Presentation] Synchrotron X-ray micro-CT analyses of the early Cambrian microfossils: Decoding of the early evolution of Metazoa, Japan Geoscience Union Meeting 2013 (2013)
  • Author(s): Komiya, T., Nakao, T., Uesugi, K., Han, J.
  • Organizer: Makuhari
  • Place of Presentation: Chiba, Japan
• [Presentation] Synchrotron X-ray Micro-CT analyses of the Early Cambrian microfossils,2012 GSA Annual meeting 44 (2012)
  • Author(s): Komiya, T., Han, J., Nakao, T., Uesugi, K.,Hoshino, M.
  • Organizer: GeologicalSociety of America Abstracts with Programs
  • Place of Presentation: Charlotte, North Carolina, USA
• [Presentation] Synchrotron X-ray Micro-CT analyses of the Early Cambrian microfossils (2012)
  • Author(s): Komiya, Tsuyoshi
  • Organizer: 2012 GSA Annual meeting
  • Place of Presentation: Charlotte Convention Center (Charlotte, North Carolina, USA)
• [Presentation] Geology of the Nain Complex, Labrador, Canada: Occurrence of the Early Archean supracrustals (2012)
  • Author(s): Komiya, Tsuyoshi
  • Organizer: Goldschmidt 2012 Conference
  • Place of Presentation: Palais des congrès (Montreal, Canada)
• [Presentation] U-Pb zircon ages of Early Archean gneisses from northern Labrador (2012)
  • Author(s): Shimojo, Masanori
  • Organizer: Goldschmidt 2012 Conference
  • Place of Presentation: Palais des congrès (Montreal, Canada)
• [Presentation] Search for Early Archean mantle lacking the late-veneer component (2012)
  • Author(s): Ishikawa, A.
  • Organizer: Goldschmidt 2012 Conference
  • Place of Presentation: Palais des congrès (Montreal, Canada)
• [Presentation] Ediacaran carbon isotope anomaly records shallow marine event, not entire ocean (2012)
  • Author(s): Tahata, Miyuki
  • Organizer: Goldschmidt 2012 Conference
  • Place of Presentation: Palais des congrès (Montreal, Canada)
• [Presentation] Chemopaleontology: 3D images and trace element and isotope analyses of fossils (2012)
  • Author(s): Komiya, Tsuyoshi
  • Organizer: Japan Geoscience Union Meeting 2012
  • Place of Presentation: 幕張メッセ（千葉県幕張）
• [Presentation] Observations of internal structures of the Chengjiang macrofossils with a synchrotron-CT technique at SPring-8 (2012)
  • Author(s): Komiya, Tsuyoshi
  • Organizer: Japan Geoscience Union Meeting 2012
  • Place of Presentation: 幕張メッセ（千葉県幕張）
• [Presentation] Origin and early evolution of Metazoa: Decoding surface environmental changes by multi-isotope analyses (2012)
  • Author(s): Komiya, Tsuyoshi
  • Organizer: Japan Geoscience Union Meeting 2012
  • Place of Presentation: 幕張メッセ（千葉県幕張）
• [Presentation] Geology of the Nain complex in Labrador, Canada: Discovery of the oldest oceanic crust (2012)
  • Author(s): Komiya, Tsuyoshi
  • Organizer: Japan Geoscience Union Meeting 2012
  • Place of Presentation: 幕張メッセ（千葉県幕張）
• [Presentation] リン酸塩岩の成因と後生動物活動 (2012)
  • Author(s): Komiya, Tsuyoshi
  • Organizer: 日本地質学会第 119 年学術大会
  • Place of Presentation: 大阪府大(大阪府大阪市中百舌鳥)
• [Presentation] 冥王代研究:太古代最初期の地質体の再検討と冥王代ジルコン 年代・地質分布に基づく初期大陸成長 (2012)
  • Author(s): Komiya, Tsuyoshi
  • Organizer: 日本地質学会第 119 年学術大会
  • Place of Presentation: 大阪府大(大阪府大阪市中百舌鳥)
• [Presentation] Three steps evolution of multicellular animals (2011)
  • Author(s): Komiya, T.
  • Organizer: Japan Earth and Planetary Science Join Meeting
  • Place of Presentation: Makuhari,Japan
• [Presentation] Infrared microspectroscopic characterization of Ediacaran microfossils from Doushantuo Formation (2011)
  • Author(s): Igisu, M., Komiya, T., Nakashima, S., Ueno, Y., Maruyama, S.
  • Organizer: Weng'an area, Japan Earth and Planetary Science Join Meeting
  • Place of Presentation: Makuhari,Japan
• [Presentation] 多細胞動物の三段階進化 (2011)
  • Author(s): 小宮剛
  • Organizer: 2011年地球惑星科学連合大会(招待講演)
  • Place of Presentation: 幕張
• [Presentation] 真の大陸成長 (2011)
  • Author(s): 小宮剛
  • Organizer: 2011年地球惑星科学連合大会
  • Place of Presentation: 幕張
• [Presentation] スーパーアースとプレートテクトニクス (2011)
  • Author(s): 小宮剛
  • Organizer: 2011年日本地質学会
  • Place of Presentation: 水戸
• [Presentation] 冥王代研究 (2011)
  • Author(s): 小宮剛
  • Organizer: 2011年日本地質学会
  • Place of Presentation: 水戸
• [Presentation] 冥王代研究計画:最古ジルコンの探索とラブラドル・ネーン岩体の地質調査 (2011)
  • Author(s): 小宮剛
  • Organizer: 2011年日本地球化学会年会
  • Place of Presentation: 札幌
• [Remarks]
  • URL: http://ea.c.utokyo.ac.jp/earth/Members/komiya.html
• [Remarks] 小宮研究室 地球生命環境進化史研究
  • URL: http://ea.c.u-tokyo.ac.jp/earth/Members/komiya.html
• [Remarks]
  • URL: http://ea.c.u-tokyo.ac.jp/earth/Members/komiya.html