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1991 Fiscal Year Final Research Report Summary

Geotraverses of the Japanese Islands

Research Project

Project/Area Number 01302018
Research Category

Grant-in-Aid for Co-operative Research (A)

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

Principal Investigator

SUWA Kanenori  Nagoya University, School of Science, Professor, 理学部, 教授 (70022564)

Co-Investigator(Kenkyū-buntansha) AIHARA Atsuo  Kyusyu University, Faculty of Science, Professor, 理学部, 教授 (80037291)
SHIMAZAKI Hidehiko  University of Tokyo, Faculty of Science, Professor, 理学部, 教授 (50013751)
SAITO Tsunemasa  Tohoku University, Faculty of Science, Professor, 理学部, 教授 (90111335)
KATO Makoto  Hokkaido University. Faculty of Science, Professor, 理学部, 教授 (60000824)
MIZUTANI Shinjiro  Nagoya University, School of Science, Professor, 理学部, 教授 (50022538)
Project Period (FY) 1989 – 1991
KeywordsGeotraverse / the Japanese Islands / Metamorphic belt / Age determination / Island arc / Suture zone / Precambrian / Volcano
Research Abstract

Geotraverses of the Japanese Iiands
The Japanese Islands are divided into two principal geologic provinces, Northeast Japan and Southwest Japan. Both provinces are composed of many tectonostratigraphic terrenes. Without knowledge of these terrenes, the complex geological history of the Japanese Islands can not be properly understood.
The purpose of this study is to examine intra- and inter-terrene relations as well as stratigraphic, sedimentological, geochronological and metamorphic characteristics of these terrenes through geotraverses in many regions in the Japanese Islands, from Hokkaido to Okinawa, and to overview the Paleozoic to Cenozoic geologic evolution.
As a result of this study, the following lines of new evidence were obtained.
(1). In the central part of the Hida terrene the so-called Precambrian Gray Granite occurs as veins and dikes cutting the Hida gneiss. The detailed geochronological studies on the basis of CHIME ages of monazites and zircons from the Gray, franite have revealed that it intruded into the Hida gneiss in early Triassic time (ca. 240 Ma). not in Precambrian time.
(2). CHIME age data of monazite and zircon grains from the Carboniferous llikami granite in the Soutil Kitakami terrene have shown that the ca. 250 Ma thermal event is also recorded in tile rims of many zircon crystals in the granite. It seems probable that the latest Permian magnatism was much more extensive both in Northeast Japan and Southwest Japan than has been thought.
(3). The oldest radiometric date is a 2050 Ma Rb-Sr whole-rock isochron age (originally 1985 Ma, it was recalculated using the currently-accepted decay constant) for quartzo-feldspathic gneisses in the Kamiaso conglomerate. CHIME ages of monazites in quartzo-feldspathic gneiss clasts and sandstones in the Mino terrene also give ca. 1700-1400 Ma, showing that the middle Precambrian rocks were widespread in the provenance of the classic rocks.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 諏訪 兼位・他: "玄武岩の柱状節理" 名古屋大学古川総合研究資料館報告. No.7. 19-40 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Iiyama,J.T.: "The third international symposium on advanced nuclear energy reserch-Global environment and Nuclear energy-." Proc.3rd Internat.Symp.Advanced Nuclear Energy Research.Mito,Japan. 129-137 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Saito,Y.and Yokoyama,K.: "Petrological study of Cretaceous to Tertiay sandstones in the Chikubetsu area,northern Hokkaodo." Mem.Natn.Sci.Mus.Tokyo. Vol.24. 7-15 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Suzuki,K.,Adachi,M.Tanaka,T.: "Middle Precambrian provenance of Jurassic sandstone in the Mino Terrane,central Japan:Th-U-total Pb evidence from an electron microprobe monazite study." Sedimentary Geology. Vol.75. 141-147 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 柳 哮: "桜島火山のマグマ溜り系の構造と機能." 火山. 36巻、. 311-317 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ujiie,H.Tanaka,Y.Ono,T.: "Late Quarternary paleoceanographic record from the middle Ryukyu Trench slope,northwest Pacific." Marine Micropaleontology. Vol.18. 115-128 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Suwa, K., Shikata, Y., Yasuno, M. and Hiraiwa, I.: "Columnar joint of basalt" Bull. Nagoya Univ. Furukawa Museum. No. 7. 19-40 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Iiyama, J. T.: "The third international symposium on advanced nuclear energy research - Global environment and Nuclear energy -" Proc. 3rd Internat. Symp. Advanced Nuclear Energy Research. Mito, Japan. 129-137 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Saito, Y. and Yokoyama, K.: "Petrological study of the Cretaceous to Tertiary sandstones in the Chikubetsu area, northern Hokkaodo" Mem. Natn. Sci. Mus., Tokyo. 24. 7-15 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki, K., Adachi, M. and tanaka, T.: "Middle Precambrian provenance of Jurassic sandstone in the Mino Terrcne, central Japan : Th-U-total Pb evidence from an electron microprobe monazite study" Sedimentary Geology. 75. 141-147 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki, K. and Adachi, M.: "Th, U and Pb analytical data of monazites, zircons and xenotimes from the Tsubonosawa paragnesis and the Hikami granite in the South Kitakami terrane" Bull. Nagoya Univ. Furukawa Museum. No. 7. 41-51 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki, K. and Adachi, M.: "Precambrian provenance and Silurian metamorphism of the Tsubonosawa paragneiss in the South Kitakami terrene, Northeast Japan, revealed by the chemical Th-U-total Pb isochron ages of monazite, zircon and xenotime" Geochem. J.25. 309-328 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki, K. and Adachi, M.: "The chemical Th-U-total Pb isochron ages of zircon and monazite from the Gray Granite of the Hida terrene, Japan" J. Earth Sci. Nagoya Univ.38. 11-37 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yanagi, T.: "Constitution and function of the chamber system under Sakurajima Volcano" Bill. Volcanological Soc. Japan. 36. 311-317 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yanagi, T., Ichimaru, Y. and Hirahara, S.: "Petrochemical evidence for coupled magma chambers beneath the Sakurajima volcano, Kyushu, Japan" Geochem. J.25. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ujiie, H., Tanaka, Y. and Ono, T.: "Late Quarternary paleoceanographic record from the middle Ryukyu Trench slope, northwest Pacific" Marine Micropaleontology. 18. 115-128 (1991)

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

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Published: 1993-03-16  

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