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Facies analysis of the Upper Cenozoic, western Japan

Research Project

Project/Area Number 02640601
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 地質学一般
Research InstitutionEhime University

Principal Investigator

MIZUNO Atsuyuki  Ehime Univ Fac of Sci Prof., 理学部, 教授 (60181898)

Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1992: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1991: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1990: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsWestern Inner Zone / Upper Cenozoic / Continental fluvial facies / of Southwestern Japan 1-Ma unconformity / 1-Ma tectonic movement / Braid-river facies / alluvial fan facies / Meandering river facies / 後期新生界(内陸相) / 推績相解析 / 西条層 / 三豊層 / 焼尾峠層 / 土柱層 / 堆積相 / インブリケ-ション(礫) / 古流向 / 網状河川ー扇状地性礫層 / プロクシマル性 / 河成堆積物
Research Abstract

The Upper Cenozoic sediments in the western Inner Zone of South-west Japan, mostly consisting of continental fluvial depositional facies are stratigraphically classified into two horizons, the Pliocene to Lower Pleistocene (PLP) and the Middle Pleistocene (MP). The Tsunozu Group of PLP represented by alternating lagoonal and fluvial facies formed possibly under the control of sea-level change caused by glacial eustacy, as suggested by palyno-floral changes, which provides a significant basis of better understanding of the sea-level changes in Japan during 4-1 Ma.Fluvial depositional facies of PLP sediments in the other areas mostly comprises braided-river facies and additionally alluvial fan- and meandering river facies, excluding their top part which exclusively consits of proximal alluvial facies generally, suggesting marked upheaval of hinterland in its depositional time after regional unconformity called the "1-Ma unconformity" developed in wide areas of the western Inner Zone. The unconformity represents the "1-Ma tectonic movement" in the areas, possibly related to some phase of northwestward movement of the philippine Sea plate. Fluvial depositional facies of the MP sediments was formed mostly under a tectonic control of activity of NE-SW faults prevailing in western Chugoku region, as represented by the Saijo Formation. Thus, the depositional facies of the Upper Cenozoic in the western Inner Zone was formed, influenced partly by sea-level changes by glacial eustacy and mostly by tectonic movement.

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] 水野 篤行 早坂 竜児: "鮮新世後期の扇状地一網状河川堆積相-本州西端部の土井ヶ浜層-" 堆積学研究会報. 32. 91-96 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 井岡 昇・水野 篤行・山崎 俊嗣: "山陰西部の鮮新一更新経都野津層:古地磁気層序と堆積年代" 第四記研究. 29. 257-266 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 水野 篤行・平川 昇一: "中部更新経西条層の河川堆積相" 堆積学研究会報. 38. 73-84 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 水野 篤行・武智 賢樹: "山陰西部江津地域の都野津相群に観察される特異な構造とその解釈" 地質学雑誌. 99. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 水野 篤行・武智 賢樹: "模式地の都野津層群の層序と堆積相(予報)" 日本地質学会西日本支部会報. 102. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 水野 篤行・武智 賢樹・北尾 秀夫・温品 徹: "山陰西部の都野津層群,とくに層序区分とそのなかに見られる不整合について" 日本地質学会第100年学術大会講演要旨. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] A.Mizuno & R.Hayasaka: "Late Pliocene alluvial fan-braided river facies: The Doigahama Formation in western Honshu" J.Sediment Soc Japan. 32. 91-96 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] N.Ioka, A Mizuno & T.Yamazaki: "Magnetostratigraphy and pleomagnetic age of the Plio-Pleistocene Tsunozu Formation of the western San'in coastal area" The Quaternary Research. 29. 257-266 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] A.Mizuno & S.Hirakawa: "Fluvial sedimentation of the Middle Pleistocene Saijo Formation" J.Sediment. Soc.Japan. 38. 73-84 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] A.Mizuno & K.Takechi: "A peculiar structure observed in the Plio-Pleistocene Tsunozu Group in western San'in region, and its interpretation" J.Geol. Soc.Japan. 99. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] A.Mizuno & K.Takechi: "Stratigraphy and sedimentary facies of the type Tsunozu Group (a preliminary note)" Rept. Western Japan Branch, Geol Soc. Japan. 102. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] A.Mizuno & K.Takechi: "The Tsunozu Group, with special references to its stratigraphic division and an unconformity within the group" Abstract Papers The 100th An. Meeting Geol.Soc. Japan. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 水野篤行・平川昇一: "中部更新統西条層の河川堆積相" 堆積学研究会報. 38. 73-84 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 水野篤行・武智賢樹: "山陰西部江津地域の都野津層群に観察される持異な構造とその解釈" 地質学雑誌. 99. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 水野篤行・平川昇一: "中部更新説,西条層の堆積学的特徴(予報)" 日本地質学会西日本支部会報. 101. 21- (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 水野篤行・武智賢樹: "100万年前に江津で何が起ったか?-都野津層群上部に観察される特異な構造とその解釈-" 日本地質学会西日本支部会報. 102. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 水野篤行・武智賢樹: "模式地の都野津層群の層序と堆積相(予報)" 日本地質学会西日本支部会報. 102. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 水野篤行・武智賢樹・北尾秀夫・温品徹: "山陰西部の都野津層群,とくに層序区分とそのなかに見られる不整合について" 日本地質学会第100年学術大会講演要旨. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 水野 篤行,藤川 聡: "香川県下三豊層・焼尾峠尾の推績学的研究" 第四紀研究.

    • Related Report
      1991 Annual Research Report
  • [Publications] 水野 篤行,平川 昇一: "東広島市南方の西条層:推績相解析" 推積学研究会報.

    • Related Report
      1991 Annual Research Report
  • [Publications] 水野 篤行: "中国地方西部の後期新生界に関する新知見" 地質ニュ-ス.

    • Related Report
      1991 Annual Research Report
  • [Publications] 水野 篤行,早坂 竜児: "鮮新世後期の扇状地ー網状河川堆積相ー本州西端部の土井ヶ浜層ー" 堆積学研究会報. 32. 91-96 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 水野 篤行,早坂 竜児: "山口県豊北町,岡林ー波原農業団地の地質ーとくに上部鮮新統土井ヶ浜層についてー" 山口地学会誌. 24. 2-16 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 井岡 昇・水野 篤行・山崎 俊嗣: "山陰西部の鮮新ー更新統都野津層:古地磁気層序と堆積年代" 第四紀研究. 29. 257-266 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 水野 篤行,早坂 竜児: "本州西部の河成鮮新統土井ヶ浜層と波原断層" 地質学雑誌.

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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