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1995 Fiscal Year Final Research Report Summary

Paleobiogeographical study on the Permian brachiopods of the Akiyoshi Terrane

Research Project

Project/Area Number 06640599
Research Category

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

Allocation TypeSingle-year Grants
Research Field Stratigraphy/Paleontology
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

YANAGIDA Juichi  Kyushu Univ., Faculty of Sci., Professor, 理学部, 教授 (70037183)

Project Period (FY) 1994 – 1995
KeywordsAkiyoshi terrane / Brachiopod faunas / Carboniferous of the Akiyoshi Limestone / Permian Tsunemori Formation / Akiyoshi organicreef complex / Yangtze platform / Collapse and accretion / Paleobiogeography
Research Abstract

In 1994 a huge number of collected materials on the Upper Carboniferous brachiopods from the Akiyoshi Limestone as well as the Lower Permian specimens from the Taishaku Limestone were examined. Permian brachiopods from the Tsunemori Formation have been collected with the detailed field survey. For the purpose of comparing the faunal character, Permian brachiopod faunas from Oman have been examined and described.
In 1995 two species of early Late Carboniferous brachiopod Weiningia have been described and their paleobiogeographical significance was also discussed. A Lingula species was discriminated and discussed from the Triassic Mine Group, distiributed in the western neighboring region of Akiyoshi. The Triassic Lingula is very significant to consider the process of the largest mass extinction occured within marine invertebrates at the end of the Permian. The Middle Permian brachiopod from the Tsunemori Formation have been discussed. The preliminary research of them has been concluded as follows : The Tsunemori brachiopod fauna is closely related with that of the late Middle to early Late Permian of the Yangtze Platform in southern China. Elements of the Tsunemori brachiopod fauna are characterized by mixture of those in the warm water region of Tethys as well as the cool water in the high latitudal regions. This means that the Akiyoshi organic reef complex on a seamount probably collapsed the northern marginal region of the Yangtze Platform at the end of the Middle Permian or the begining of the Late Permian.
These preliminary results have been presented and read in the 3rd International Brachiopod Congress held at the Laurentian University, Sudbury, Canada in 1995. The collected Carboniferous brachiopods from the Akiyoshi Limestone Group and the Permian brachiopods from the Tsunemori Formation will be described as soon as possible for the purpose of making clear the geologic history of the Upper Paleozoic of South west Japan.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] Juichi Yanagida: "Weiningia from the Millerella yowarensis Zone of the Akiyoshi Limestone Group (Carboniferous Brachiopods from Akiyoshi, Southwest Japan, Part VI)" Memoirs of the Fac. Sei.., Kyushu University, Ser. D. 29. 87-100 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 柳田寿一: "三畳系美祢層群より産出したLingula属腕足類" 九州大学理学部研究報告,地球惑星科学. 19. 1-9 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Juichi Yanagida: "Weiningia from the Millerella yowarensis Zone of the Akiyoshi Limestone Group (Carboniferous Brachiopods from Akiyoshi, Southwest Japan, Part VI)" Memoirs of the Fac.Sci., Kyushu University, Ser.D. Vol.29, No.1. 87-100 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Juichi Yanagida: "Lingula(Brachiopod) procuredfrom the Triassic Mine Group" Science Report, Dept.Earth & Planet.sci., Kyushu Univ.Vol.19, No.1. 1-9 (1995)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1997-03-04  

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