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2012 Fiscal Year Final Research Report

Precise structural analysis of the Shimanto accretionary complex in Kyushu, southwest Japan.

Research Project

  • PDF
Project/Area Number 22540472
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geology
Research InstitutionKagoshima University

Principal Investigator

YAMAMOTO Hiroshi  鹿児島大学, 大学院・理工学研究科, 准教授 (60244224)

Co-Investigator(Kenkyū-buntansha) TERABAYASHI Masaru  香川大学, 工学部, 教授 (40243745)
HAFIZ Urrehman  鹿児島大学, 理工学研究科, 助教 (60505410)
Project Period (FY) 2010 – 2012
Keywords地質構造 / テクトニクス / 四万十帯
Research Abstract

Geological structures of the Shimanto Belt in southwestern Kyusyu and Tokunoshima Island have been investigated. In the Hokusatsu district, layers of basaltic lava, chert and mudstone form imbricate structure. The Yaseo area in the Satsuma Peninsula carries one of the serpentinite occurrences in the Shimanto Belt. Two majorserpentinite bodies are exposed in the areas extending about 100 x 50 m and 200 x 70 m.These overlie west-dipping layers of sandstone and mudstone with subhorizontal boundaries.In the Choyasan area of the Nansatsu district, layers of mudstone and sandstone generally dip west with westerly younging. Geology of the central part of Tokunoshima Island is composed of pelitic-psammitic schsits, granitic intrusive rocks and sporadic serpentinite. Lenticular bodies of serpentinite dipping northwest in low angles are distributed in the pelitic schist. Dark-shaded veins with up to 20 cm thick appearin the pelitic and psammitic schists at the mouth of Akirigami River in western Tokunoshima. Fragments of the country rocks in variable sizes and fine-grained particles fill the veins.

  • Research Products

    (4 results)

All 2012 2011

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (3 results)

  • [Journal Article] 薩摩半島八瀬尾地域の蛇紋岩体と四万十帯堆積岩層との低角境界2011

    • Author(s)
      山本啓司・下次圭太・土居真輔・ハフィーズ ウル レーマン
    • Journal Title

      地質学雑誌

      Volume: 117 Pages: 468-471

    • URL

      http://dx.doi.org/10.5575/geosoc.117.468

    • Peer Reviewed
  • [Presentation] 徳之島西部秋利神地域の泥質・砂質変成岩中のシュードタキライト様貫入岩2012

    • Author(s)
      上田脩郎・山本啓司・ 寺林優
    • Organizer
      日本地質学会第119 年学術大会講演要旨
    • Place of Presentation
      大阪市
    • Year and Date
      2012-09-17
  • [Presentation] 九州南部南薩地方の四万十帯の地質構造2012

    • Author(s)
      上田脩郎・山本啓司
    • Organizer
      日本地質学会西日本支部第162回例会
    • Place of Presentation
      鹿児島市
    • Year and Date
      2012-02-11
  • [Presentation] 九州南部北薩地方の四万十帯池之段層の地質構造2012

    • Author(s)
      土居真輔・冨永隆志・山本啓司
    • Organizer
      日本地質学会西日本支部第162回例会
    • Place of Presentation
      鹿児島市
    • Year and Date
      2012-02-11

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Published: 2014-08-29  

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