• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2002 Fiscal Year Final Research Report Summary

Petrology and thremochronological study for youngest exposed pluton of the World

Research Project

Project/Area Number 12440135
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

HARAYAMA Satoru  Faculty of Science, Geology Department, Professor, 理学部, 教授 (60293536)

Co-Investigator(Kenkyū-buntansha) MAKINO Kuniaki  Faculty of Science, Geology Department, Associate Professor, 理学部, 助教授 (30242712)
YAMAGUCHI Yoshiaki  Faculty of Science, Geology Department, Professor, 理学部, 教授 (50144689)
ITAYA Tetsumaru  Okayama Science University, Natural Science Laboratory, Professor, 自然科学研究所, 教授 (60148682)
Project Period (FY) 2000 – 2002
KeywordsThermochronology / Paleomagnetism / Cooling model / Granite / Mylonite / K-Ar dating / Hida Mountain Range / Uplifting
Research Abstract

Thermochronological paleomagnetic and geological studies have been carried out on the Quaternary Takidani Granodiorite and the Late Pliocene Kurobegawa Granite in order to elucidate their cooling history and the mechanism for emplacement. Major results are as follows.
1. Paleomagnetic directions for both the Takidani Granodiorite and the Kurobegawa Granite could not determine for unstability of remanent magnetization of them.
2. Roof volcanic rocks of the above granitic pluton show reversed polarities of remanent magnetization with east-shifted directions as the result of eastward tilting of eastern-half area of the Hida Mountain Range.
3. Both the granitic pluton show strongly mylonitized texture along the N-S tending reverse faults at their western contact.
4. Systematic bottomward younging of biotite K-Ar ages (1.4 Ma to 1.0 Ma) for the Takidani Granodairite can be explained by the slower start in cooling at deeper level of the pluton. Such a cooling history may be affected by the eastward tilting and uplifting of the eastern-half area of the Hida Mountain Range. Mylonitic displacement took place during the cooling process of the Takidani Pluton about 1.0 Ma.

  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 原山 智: "プルトンの熱年代学と定置モデル"月刊地球号外. 30. 35-38 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Wada, S.Harayama, Y.Yamaguchi: "Mafic enclaves densely concentrated in upper part of the vertically zoned felsic magma chamber : The Kurobegawa Granitic Pluton, Hida Mountain Range, central Japan"Bulletin of Geological Society of America. (In press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 原山智, 大藪圭一郎, 深山裕永, 足立英彦, 宿輪隆太: "飛騨山脈東半部における前期更新世後半からの傾動・隆起運動"第四紀研究. 42. 127-140 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Miyashita, A., Itaya, T.: "K-Ar age and chemistry of phengite from the Sanbagawa schists in the Kanto Mountains, central Japan, and their implication for exhumation tectonics"Gondwana Research. 5. 837-848 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Miyoshi, N., Satoh, H., Yamaguchi, Y., Masuda, H.: "Synthetic silica glass for trace aluminium determination in quartz by electron microprobe"The Journal of Geostandards and Geoanalysis. (In press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Nakao, S., Makino, K., Eriguchi, T.: "Microtexture and water content of alkali feldspar by Fourier-transform infrared microspectroscopy"Mineralogical Magazine. 65. 673-681 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 原山 智, 山本 明: "超火山[槍・穂高]-北アルプス誕生の謎を解く-"山と渓谷社. 240 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Harayama, S.: "Thermochronology and emplacement model for Pluton"Monthly Earth. 30. 35-38 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Wada, H., Harayama S. and Yamaguchi Y.: "Mafic enclaves densely concentrated in upper part of the vertically zoned felsic magma chamber: The Kurobegawa Granitic Pluton, Hida Mountain Range, central Japan"Bulletin of Geological Society of America. in press. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miyashita, A. and Itaya, T.: "K-Ar age and chemistry of phengite from the Sanbagawa schists in the Kanto Mountains, central Japan, and their implication for exhumation tectonics"Gondwana Research. 5-4. 837-848 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miyoshi, N., Satoh, H., Yamaguchi, Y. and Masuda, H.: "Synthetic silica glass for trace aluminium determination in quartz by electron microprobe"The Journal of Geostandards and Geoanalysis. in press. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nakano, S., Makino, K. and Eriguchi, T.: "Microtexture and water content of alkali feldspar by Fourier-transform infrared microspectroscopy"Mineralogical Magazine. 65. 673-681 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Harayama, S. and Yamamoto, A.: "Yari-Hotaka Mountains as ultra large volcano: Analysis for the uplifting of Northern Japan Alps"Yama-kei publisher co.Ltd.. 240 (2003)

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

URL: 

Published: 2004-04-14  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi