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Late Holocene paleoenvironmental analysis from submarine cave deposits

Research Project

Project/Area Number 16340159
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

KITAMURA Akihisa  Shizuoka University, Institute of Geosciences Faculty of Science, Associate Professor, 理学部, 助教授 (20260581)

Co-Investigator(Kenkyū-buntansha) KASE Tomoki  National Science Museum, Division of Invertebrate Paleontolog, Chief, 地学研究部, 室長 (20124183)
SAKAI Hideo  Toyama University, Institute of Geosciences Faculty of Science, Professor, 理学部, 教授 (30134993)
FUJITA Kazuhiko  Ryukyu University, Institute of Geosciences Faculty of Science, Associate Professor, 理学部, 助手 (00343377)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥8,700,000 (Direct Cost: ¥8,700,000)
Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2005: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2004: ¥6,100,000 (Direct Cost: ¥6,100,000)
KeywordsHolocene / climate changes / marine environments / coral reef / submarine cave / Paleontology / 海底洞窟堆積物 / 土石流堆積物 / 古地震 / 微小二枚貝 / 古環境 / 大洞窟軽石 / 進化 / 堆積物 / 貝類 / 有孔虫 / 古地磁気
Research Abstract

We examined a sediment layer and surface sediments in a submarine limestone cave (31 m depth) on the fore-reef slope of Ie Island, off Okinawa mainland, Japan. In addition, oxygen isotope analysis was performed on the cavernicolous micro-bivalve Carditella iejimensis from both cored sediments and surface sediments, and the water temperature within the cave was recorded for nearly one year. These data lead to the following conclusions : 1) although the biotic and non-biotic environments within the cave have persisted for the past 5,000 years, the environmental conditions of the innermost cave area gradually spread to the entrance of the cave ; 2) the alternation of water masses within the cave is caused by the tidal cycle ; 3) the δ^<18>O-derived temperature of C. iejimensis indicates spring temperature at 30 m deep outside the cave ; 4) the δ^<18>O-derived temperature of C. iejimensis from cored sediments implies that there were two warmer intervals, at about AD 280 and AD 1050 ; 5) a sediment layer containing pumice grains (BC 440 ± 40 to AD 640 ± 80) was identified and named as Daidokutsu pumice. These suggest that submarine-cave sediments and oxygen isotope records of cavernicolous shells are a useful tool to reconstruct century-scale paleoenvironmental and climatic variability for the subtropical Okinawa Islands during the Holocene.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (8 results)

All 2007 2006 Other

All Journal Article (8 results)

  • [Journal Article] Potential of submarine-cave sediments and oxygen isotope composition of cavernicolous micro-bivalve as a late Holocene paleoenvironmental record2007

    • Author(s)
      Kitamura, Yamamoto, Kase ほか
    • Journal Title

      Global and Planetary Change 55

      Pages: 301-316

    • NAID

      120000794957

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Changes in cavernicolous bivalve assemblages and environments within a submarine cave in Okinawa Islands during the last 5,000 years2007

    • Author(s)
      Kitamura, Hiramoto, Kase ほか
    • Journal Title

      Paleontological Research 11・2

      Pages: 161-180

    • NAID

      110006317413

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Potential of submarine-cave sediments and oxygen isotope composition of cavernicolous micro-bivalve as a late Holocene paleoenvironmental record.2007

    • Author(s)
      Kitamura, A., et al.
    • Journal Title

      Global and Planetary Change vol. 55

      Pages: 301-316

    • NAID

      120000794957

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Changes in cavernicolous bivalve assemblages and environments within a submarine cave in Okinawa Islands during the last 5,000 years.2007

    • Author(s)
      Kitamura, A. et al.
    • Journal Title

      Paleontological Research vol. 11, no. 2

      Pages: 161-180

    • NAID

      110006317413

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 沖縄県伊江島の海底洞窟堆積物から見つかった軽石散在層2006

    • Author(s)
      北村晃寿, 加瀬友喜ほか
    • Journal Title

      第四紀研究 45

      Pages: 141-144

    • NAID

      10023991527

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Discovery of sediment layer containing pumice grains in submarine cave sediment in coral reef of Okinawa Islands (in Japanese with English abstract).2006

    • Author(s)
      Kitamura, A., et al.
    • Journal Title

      The Quaternary Research (Daiyonki-Kenkyu) vol. 45

      Pages: 141-144

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 沖縄県伊江島の海底洞窟堆積物から見つかった軽石散在層2006

    • Author(s)
      北村晃寿
    • Journal Title

      第四紀研究 45(印刷中)

    • NAID

      10023991527

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Changes in cavernicolous bivalve assemblages and environments within a submarine cave in Okinawa Islands during the last 5,000 years

    • Author(s)
      Kitamura, Hiramoto, Kase ほか
    • Journal Title

      Paleontological Research (出版中)

    • NAID

      110006317413

    • Related Report
      2006 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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