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Fundamental research on the fossilization of trace fossils

Research Project

Project/Area Number 07640621
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Stratigraphy/Paleontology
Research InstitutionChiba University

Principal Investigator

KOTAKE Nobuhiro  Chiba University, Faculty of Science, Associate Professor, 理学部, 助教授 (00205402)

Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1996: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1995: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsTrace fossils / fossilization / storm deposits / successive stable bottom condition / quick burial / preservation potential
Research Abstract

To understand both mechanism and process on the fossilization of trace fossils, detailed description and analysis on the morphology and mode of occurence of trace fossils in the sediments of shallow- and deep-marine origin were made by means of not only field survey but also labolatorical technique such as soft X-ray photographs, XRD analysis, and thin section observation.
In particular, evaluation of the preservation potential of trace fossil is focused throughout this research project. Detailed observation and analysis revealed that preservation potential of trace fossils is strongly contralled by the difference in mode of sediment supply. In other words, intermittent sedimentation of background sediment should be needed for high preservation potential of trace fossils. A part from trace fossils produced by deep burrowers, stable bottom conditions characterized by a continuous sediment supply lead to low preservation potential of trace fossils. This is because shallower tier members among the trace fossils were obliterated by the overlapping of bioturbated activity of benthic animals through the successive elevation of sea-floor. In contrast, well-preserved trace fossils characterized by high diversity are found from the sediments deposited under the unstable bottom condition. In shallow marine settings, for example, high diversity trace fossil assemblage occurs in the sediments of storm orgin. On the other hand, high preservation potential of trace fossils is understaken for those in the turbidite site in deepsea condition. In conclusion, unstable bottom condition such as the erosion of sediment-surface and a subsequent quick burial may be needed for the higher preservation potential of trace fossils.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] 小竹 信宏: "愛川町平山の古第三系相模湖層群から産出した生痕化石" 神奈川県自然誌資料. 17. 87-97 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 藤沼伸幸・小竹信宏: "天津小湊町に分布する中新統天津層から産する炭酸塩ノジュール" 千葉大学理学部海洋生態系センター年報. 15. 14-22 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 芳賀正和・小竹信宏: "小湊実験場付近の天津層下部に含まれるドロマイト・ノジュールから産した極めて保存の良い珪藻化石群集" 千葉大学理学部海洋生態系センター年報. 15. 25-27 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 芳賀正和・小竹信宏: "房総半島南部中新統天津層下部の珪藻化石年代" 地質学雑誌. 102. 758-760 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kotake Nobuhiro: "Ethological interpretation of me trace fossil Zoophycos in the Hikoroichi Formation (Lower Carboniferous),southern Kitakami Mountains,northeast Japan" Paleontological Research. 1(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 奈良正和・小竹信宏: "中・上部更新統下総層群に産するアナジャコ巣穴化石Psionichnus" 地質学雑誌. 103(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kotake Nobuhiro: "The trace fossil Zoophycos : A fossil record of excretory behavior controlled by foraging behavior of the producer." Jour.Geol.Soc.Japan. v.101. XV-XVI (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] "Magnetostratigraphy and biostratigraphy of the Plio-Pleistocene Chikura and Toyofusa Groups, southernmost part of the Boso Peninsula, central Japan." Jour.Geol.Soc.Japan. v.101. 515-531 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] "Sequence stratigraphy of the Kuburatagi Formation of the Yaeyama Group, Yonaguni-jima island, Okinawa, southwest Japan." Mem.Geo.Soc.Japan. no.45. 208-222 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] "Trace fossils from the Paleogene Sagamiko Group, Aikawa Town, Kanagawa, central Japan" Nat.Hist.Rep.Kanagawa. v.17. 87-94 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] "Calcareous nodules from the Middle Miocene Amatsu Formation in Amatsu-Kominato Town, southereastern part of the Boso Peninsula, Japan." Ann.Rep.Mar.Ecosys.Res.Cent.Chiba Univ.no.15. 14-22 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] "Exceptionally well-preserved fossil diatoms from a dolomite nodule from the Amatsu Formation around the Kominato Marine Labolatory." Ann.Rep.Mar.Ecosys.Res.Cent.Chiba Univ.no.15. 25-27 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] "Diatom age of the lower part of the Miocene Amatsu Formation, Boso Peninsula, southern-central Japan." Jour.Geol.Soc.Japan. v.102. 758-760 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kotake Nobuhiro: "Ethological interpretation of the trace fossil Zoophycos in the Hikoroichi Formation (Lower Carboniferous), southern Kitakami Mountains, Northeast Japan." Paleont.Res.v.1 (in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 小竹信宏: "愛川町平山の古第三系相模湖層群から産出した生痕化石" 神奈川県自然誌資料. 17. 87-97 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 藤沼信幸・小竹信宏: "天津小湊町に分布する中新統天津層から産する炭酸塩ノジュール" 千葉大学理学部海洋生態系センター年報. 15. 14-22 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 芳賀正和・小竹信宏: "小湊実験場付近の天津層下部に含まれるドロマイト・ノジュールから産した極めて保存の良い珪藻化石群集" 千葉大学理学部海洋生態系センター年報. 15. 25-27 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 芳賀正和・小竹信宏: "房総半島南部中新統天津層下部の珪藻化石年代" 地質学雑誌. 102. 758-760 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Kotake Nobuhiro: "Erhological interpretation of the trace fossil Zoophycos in the Hikoroichi Formation (Lower Carboniferous),southern Kitakami Mountains,northeast Japan" Paleontological Research. (印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 小竹信宏: "生痕化石Zoophycos:摂食行動に規制された排泄行動の化石記録" 地質学雑誌. 101. XV-XVI (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小竹信宏・奈良正和: "沖縄県与那国島の八重山層群、久部良岳層のシーケンス層序" 地質学論集. 45. 208-222 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小竹信宏・小山真人・亀尾浩司: "房総半島南端地域,千倉・豊房層群(鮮新-更新統)の古地磁気および微化石層序" 地質学雑誌. 101. 515-531 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小竹信宏: "神奈川県愛甲郡愛川町の相模湖層群から発見された生痕化石" 神奈川県自然史資料. 17(印刷中). (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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