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2011 Fiscal Year Final Research Report

Fossil chemosynthetic assemblages from the Pliocene and Pleistocene sediments, Philippines.

Research Project

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Project/Area Number 20403015
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Stratigraphy/Paleontology
Research InstitutionYokohama National University

Principal Investigator

MAJIMA Ryuichi  横浜国立大学, 環境情報研究院, 教授 (30202310)

Co-Investigator(Kenkyū-buntansha) OKADA Makoto  茨城大学, 理学部, 准教授 (12101401)
Co-Investigator(Renkei-kenkyūsha) KASE Tomoki  国立科学博物館, 地学研究部, 研究主幹 (20124183)
KAWAGATA Shungo  横浜国立大学, 教育人間科学部, 准教授 (90244219)
WADA Hideki  静岡大学, 理学部, 教授 (20126791)
Project Period (FY) 2008 – 2011
Keywords化学合成群集 / 新生代 / フィリピン・レイデ島 / メタン湧水 / シロウリガイ類
Research Abstract

We observed the fossilized chemosynthetic assemblages found along the coastal area of northwestern Leyte, Philippines where Pliocene to Pleistocene marine sediments are exposed. This is the first discovery of fossil cold-seep assemblages in Southeast Asia. The assemblages show considerable variations in their modes of fossil occurrence in association with 13C-depleted authigenic carbonates indicating that they depended on methane seepages. In situ Calyptogena and large lucinid colonies have been discovered from the Cambantug Point and the Antipolo Point, respectively.

  • Research Products

    (9 results)

All 2012 2011 2010 2009

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (7 results)

  • [Journal Article] Ontogenetic Changes in Shell Microstructures in the Cold Seep-Associated Bivalve2011

    • Author(s)
      Kozue Nishida, Rei Nakashima, Ryuichi Majima
    • Journal Title

      Paleontological Research

      Volume: vol.15 Pages: 193-212

    • Peer Reviewed
  • [Journal Article] In situ Calyptogena colonies from Pliocene back-arc basin fills in Leyte Island, Philippines2010

    • Author(s)
      Ryuichi Majimam, Robert G. Jenkins, Tomoki Kase, Yolanda M. Aguilar, Takehiro Nanjo, Ryoji Wani, Hideki Wada, Allan Gil S. Fernando and Hiroki Hayashi
    • Journal Title

      The Journal of the geological society of Japan

      Volume: Vol.116 Pages: XV-XVI

    • Peer Reviewed
  • [Presentation] 成長線解析によって明らかとなった化学合成二枚貝ツキガイモドキの成長サイクル2012

    • Author(s)
      佐藤瑞穂・中島礼・坂井三郎・間嶋隆一
    • Organizer
      日本古生物学会
    • Place of Presentation
      群馬県富岡市
    • Year and Date
      2012-01-21
  • [Presentation] フィリピン,レイテ島北西部の鮮新統から更新統に産出する底生有孔虫を用いた古水深の推定2011

    • Author(s)
      岡田明莉・間嶋隆一・加瀬友喜・河潟俊吾・南條雄大・Maac-Aguilar, Yoland・和仁良二・Fernando, Alan Gil S
    • Organizer
      日本古生物学会
    • Place of Presentation
      金沢大学
    • Year and Date
      2011-07-02
  • [Presentation] 千葉県茂原市国府関に露出する更新統笠森層(上総層群)から産出した世界で一番若い化学合成化石群集(0. 57Ma)2011

    • Author(s)
      高橋正樹・ジェンキンズロバート・柴田知則・野崎篤・宇都宮正志・齋藤猛・佐藤圭・和田秀樹・伊左治鎭司・間嶋隆一
    • Organizer
      日本地球惑星連合
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2011-05-22
  • [Presentation] 日本近海産キヌタレガイ類(二枚貝綱)の貝殻構造2011

    • Author(s)
      佐藤圭・中島礼・間嶋隆一・藤倉克則・藤原義弘
    • Organizer
      日本地球惑星連合
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2011-05-22
  • [Presentation] フィリピン,レイテ島から産出した巨大なツキガイ類化石の自生的産状2011

    • Author(s)
      間嶋隆一・加瀬友喜・南條雄大・岡田明莉・野崎、篤・宇都宮正志・Aguilar, Yolanda M.・和仁良二・Fernando, Alan Gil S.・和田秀樹
    • Organizer
      日本古生物学会
    • Place of Presentation
      高知大学
    • Year and Date
      2011-01-29
  • [Presentation] フィリピン,レイテ島の化学合成化石群集産出層準の層序2010

    • Author(s)
      南條雄大・間嶋隆一・加瀬友喜・Maac-Aguilar, Yolanda.・Jenkins, Robert・和仁良二・河潟俊吾・和田秀樹・Fernando, Alan Gil S.・林広樹・楠稚枝・岡田明莉
    • Organizer
      地球惑星連合
    • Place of Presentation
      千葉県幕張
    • Year and Date
      2010-05-24
  • [Presentation] フィリピン,レイテ島の化学合成化石群集産出層準の層序2009

    • Author(s)
      間嶋隆一・加瀬友喜・Maac-Aguilar, Yolanda・Jenkins, Robert・和仁良二・河潟俊吾・和田秀樹・Fernando, Alan Gil S.・林広樹・南條雄大・楠稚枝・岡田明莉
    • Organizer
      日本古生物学会
    • Place of Presentation
      滋賀県立琵琶湖博物館
    • Year and Date
      2009-01-31

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Published: 2013-07-31  

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